Table of contents
How we vet every listicle
Every agency featured on Web Tonic passes our 84-point editorial review before a single listicle goes live. This is how we vet each pick:
Verified client outcomes: We require real case studies with measurable KPIs — revenue, ROAS, CPA, retention — tied to the exact category being ranked. No cherry-picked wins, no unverifiable numbers.
Independent reputation: We cross-check Clutch, Google, G2, and Trustpilot ratings, and screen for review-bombing or suspicious patterns. Only operators with a consistent, verifiable track record make the cut.
Beyond that, every listing goes through a quarterly re-audit. We check 84 criteria across 6 pillars to make sure it still holds up — here are some of the checks we run:
A multi-touch attribution agency works out which marketing touchpoints actually create revenue, then makes that view usable. The job is concrete: rebuild event collection so conversions survive cookie loss, stitch identity across ad platforms, CRM and a warehouse, replace last-click with a data-driven model, and prove that model against geo-lift or holdout tests.
We compared 21 firms on what a buyer can check before signing — named clients, disclosed offices, whether incrementality testing is in scope, and published rates. Only 2 of the 20 external firms publish a starting price, so we report that gap rather than estimating around it.
Which multi-touch attribution partner should you shortlist?
It depends where your data breaks. InfoTrust, Adswerve, Cardinal Path and Napkyn fix collection and governance first; Fospha, Common Thread Collective and Cro Metrics serve ecommerce; Merkle, Kepler, Analytic Partners and Blend360 handle enterprise identity and custom modelling.
1. InfoTrust
About: InfoTrust is a digital analytics and data governance consultancy sitting at the intersection of analytics and media enablement. It implements durable, privacy-centric data collection (client- and server-side tagging, consent management) and builds the attribution and value-based bidding layer on top of it for Google Marketing Platform accounts. It's a Google Marketing Platform Sales Partner, which puts identity/tracking implementation and downstream attribution modeling on the same roadmap.
Key Services: Server-side and client-side tagging implementation, Consent management platform (CMP) implementation, Marketing attribution modeling, Value-based bidding setup, Google Marketing Platform (GA4, SA360, DV360, CM360) configuration and audits, Managed privacy and consent monitoring program
Industries Served: Retail and ecommerce, Media and entertainment, CPG, Restaurants/QSR, B2B technology
Notable Clients: 1-800-Flowers, Guitar Center, Hallmark Channel, L'Oréal, Nestlé
Locations: Cincinnati, OH, USA, Toronto, Canada
Pricing: No public rate card; quoted per scope
Great For: Enterprise retail/media brands on Google Marketing Platform, Brands needing privacy-compliant data collection before attribution work, GA4/server-side tagging migrations
Website: InfoTrust
2. Web Tonic
About: Web Tonic builds attribution for accounts it also has to spend money in, so the tracking plan starts from the reallocation decision it will have to defend. Server-side tagging, Conversions API wiring and warehouse modelling are handled by the same team running the paid search and paid social the model judges. For pure enterprise data governance across Adobe or Google Marketing Platform estates, the consultancies below go deeper, and we will say so.
Key Services: Growth Marketing, Paid Social, PPC, Meta Ads, SEO, Google Ads, Snapchat Ads, Amazon Ads, Reddit Ads, TikTok Ads, TikTok Shop, GEO-AEO, Webflow Design, Shopify Design, WordPress Design, UGC, Social Media Management, Pay Per Click Management, Marketing Analytics, Analytics Implementation & CDPs, Performance Branding, Performance 360° Audit, Programmatic Ads, OOH Ads, HR Marketing
Industries Served: eCommerce, SaaS, B2B, Construction Professionals, Home Services, SMEs, Health Spa & Wellness, Retail, Legal & Judicial Services, Food & Beverages, Pets, Fitness, Family & Children, Finance & Insurance, Travel, Non-Profits & Organizations, Furniture & Decoration
Notable Clients: WorldRemit, Jack & Jones, Ardene, L'Oréal, Sendwave, Nestlé, Airbnb. Serve Fortune 500 companies and smaller fast-paced startups.
Locations: HQ in San Francisco with notable offices in New York, Chicago, Miami, Toronto, Montreal, Dubai, Singapore, Sydney and more. Offices on five continents.
Pricing: Starting at USD $3,000 per month. Flexible and scalable plans at any time according to your enterprise needs. Book a call to learn more.
Great For: Mid-market to enterprise-level businesses requiring ongoing, on-tap growth and performance marketing services.
Website: Web Tonic
3. Adswerve
About: Adswerve is a data, media and AI consultancy and long-standing Google/Adobe technology partner. Its Measurement & Insights practice builds the marketing data foundation (data modeling, aggregation, martech implementation) that Consulting & Licensing and Media Strategy & Activation teams then activate against. It positions itself as a predictive marketing consultancy rather than a media-buying agency, working through brands' and agencies' existing tech stacks.
Key Services: Marketing data modeling and aggregation, Martech implementation and enablement, Data and digital media consulting, Google/Adobe platform licensing and training, AI-driven media strategy and activation, Measurement dashboard and insights build
Industries Served: Retail, Financial services, Travel and hospitality, Healthcare, Technology/SaaS
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Denver, CO, USA, New York, NY, USA
Pricing: No public rate card; quoted per scope
Great For: Brands standardizing on Google/Adobe martech, Agencies needing a measurement subcontractor, Enterprises rebuilding their data foundation
Website: Adswerve
4. Napkyn Analytics
About: Napkyn is a Canadian data activation consultancy and Google Marketing Platform licensing/services partner. Its team of data scientists, systems integrators and marketing practitioners implements full-stack data collection and activation so pricing, competitive intelligence and campaign decisions run on the same accurate data set. It leans toward mid-market and enterprise clients that need GA4/GMP implementation done properly, not just licensed.
Key Services: Google Marketing Platform licensing and implementation, GA4 and Tag Manager setup, Data activation strategy, Dashboarding and reporting build, Marketing attribution configuration, Data governance consulting
Industries Served: Ecommerce and retail, Financial services, Travel, B2B services, Media
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Ottawa, Canada, Toronto, Canada
Pricing: No public rate card; quoted per scope
Great For: Canadian/North American mid-market brands on GA4, Teams licensing Google Marketing Platform for the first time, Organizations needing data activation, not just collection
Website: Napkyn Analytics
5. MarketLytics
About: MarketLytics is a boutique, remote-first analytics consultancy offering end-to-end services in turning digital data into action, with marketing attribution listed as a named, standalone service alongside data warehousing and CRO. It publishes scoped, fixed-price engagements (a 3-day analytics audit, a 5-day data opportunity analysis) rather than only open-ended retainers, which is unusual transparency for this category.
Key Services: Marketing attribution modeling, Data warehousing, Digital analytics audits, Conversion rate optimization, Customer segmentation, Product analytics
Industries Served: SaaS and product companies, Ecommerce, Marketing agencies (subcontracted analytics), Startups, B2B services
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Lahore, Pakistan, Karachi, Pakistan
Pricing: From USD $900 (one-time analytics audit, 3-day scope) | project-based
Great For: Startups needing an affordable, scoped attribution/analytics audit, SaaS teams wanting a fixed-price entry engagement, Agencies subcontracting analytics work
Website: MarketLytics
6. Cardinal Path
About: Cardinal Path is a digital marketing, analytics and data science consultancy with 3,000+ implementations completed across 15 countries, working across Google Marketing Platform, Adobe, Amplitude, Contentsquare and other stacks. Its practice explicitly spans Analytics Implementation, Dashboarding & Analysis and Marketing Analytics, meaning the tracking layer and the attribution and reporting layer built on it. It positions itself as platform-agnostic rather than tied to one vendor's attribution model.
Key Services: Analytics implementation (GA4, Adobe, Amplitude), Marketing analytics and attribution reporting, Dashboarding and data visualization, Strategy and analytics program consulting, Data science / advanced modeling, Platform migration (Universal Analytics to GA4)
Industries Served: Enterprise retail, Financial services, Travel, Media, Technology
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Chicago, IL, USA, New York, NY, USA
Pricing: No public rate card; quoted per scope
Great For: Multinational enterprises with multi-platform analytics stacks, Teams migrating from Universal Analytics to GA4, Organizations needing platform-agnostic attribution guidance
Website: Cardinal Path
7. Fospha
About: Fospha positions itself as a full 'Measurement Operating System' for retail commerce, combining always-on media mix modeling (MMM), cross-channel (DTC, Amazon, TikTok Shop) measurement, incremental budget forecasting and brand-impact modeling in one platform with a managed-service layer for agencies and brands. It publishes tiered, named pricing rather than pure quote-based engagement, which is rare in this category and makes it easy to benchmark against.
Key Services: Daily media mix modeling (MMM), Cross-channel and marketplace measurement (Halo), Incremental budget forecasting, Brand-impact / upper-funnel measurement, Blended MER reporting, Agency white-label measurement program
Industries Served: DTC ecommerce, Beauty and personal care, Fashion/apparel, Health and wellness, Sporting goods
Notable Clients: Adanola, Callaway Golf, Carparts.com, Dyson, Gymshark
Locations: London, UK, New York, NY, USA
Pricing: From USD $1,500/month (Lite tier, $100k-$500k monthly media spend)
Great For: DTC/ecommerce brands past $100k/month media spend, Retailers selling across DTC + Amazon + TikTok Shop, Agencies wanting a white-label measurement layer for clients
Website: Fospha
8. Common Thread Collective
About: Common Thread Collective (CTC) is an ecommerce growth and profit partner built around the 'Prophit Engine', which pairs forecasting/modeling software with a dedicated 'Prophit Engineer' to run daily budget and creative decisions against measured incrementality rather than platform-reported ROAS. Incrementality testing and measurement are named, explicit components of its methodology, not an add-on service.
Key Services: Incrementality testing, Media mix modeling and forecasting, Meta and Google ad buying, Ad creative production, Blended measurement / Prophit reporting, Growth strategy consulting
Industries Served: DTC ecommerce, Apparel and fashion, Beauty, Consumer packaged goods, Wellness/supplements
Notable Clients: Ann Taylor, Buffy, ColourPop, Liquid Death, Girlfriend Collective
Locations: Costa Mesa, CA, USA, Remote, USA
Pricing: No public rate card; quoted per scope
Great For: 7-figure to 8-figure DTC ecommerce brands, Brands wanting incrementality-based (not platform-reported) budget decisions, Founders wanting a fractional growth/finance operating system
Website: Common Thread Collective
9. Journey Further
About: Journey Further is a UK-founded, discovery-led growth partner whose 'Discovery System' explicitly includes a Marketing Science component alongside organic and paid media, used to diagnose where growth is constrained and measure a brand's advantage against the market. Its measurement work leans toward attribution and mix modeling that spans search, social and now AI platforms rather than a single-channel view.
Key Services: Marketing science / attribution modeling, Media mix and channel diagnostics, Paid media strategy and buying, Organic search and content (SEO/AEO), Competitive/discovery signal mapping, Cross-channel measurement reporting
Industries Served: Ecommerce and retail, Financial services, Travel, B2B/technology, Consumer brands
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Manchester, UK, Leeds, UK, London, UK
Pricing: No public rate card; quoted per scope
Great For: Brands wanting attribution tied to organic + paid + AI search discovery, UK/European mid-market to enterprise brands, Teams wanting a single 'growth diagnosis' before channel spend decisions
Website: Journey Further
10. Power Digital
About: Power Digital is a large, divisionalized digital marketing agency (B2B, Consumer, CPG, Fashion, Healthcare, Lifestyle) built around a named Data Intelligence practice that sits alongside its Growth Marketing and Creative services. It has invested specifically in proprietary measurement/attribution technology (its 'Nova' data platform and now 'Omega' AI operating system) to give clients a blended view across paid, earned and owned channels rather than platform-reported numbers alone.
Key Services: Data intelligence and attribution reporting, Paid media (social, search, Amazon, programmatic), SEO and content marketing, CRO, Affiliate and influencer marketing, Fractional data/marketing consulting
Industries Served: Consumer/DTC, CPG, Fashion, Healthcare, B2B
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: San Diego, CA, USA, New York, NY, USA, Atlanta, GA, USA
Pricing: No public rate card; quoted per scope
Great For: Mid-market to enterprise brands wanting a single agency across channels + measurement, Multi-division consumer companies, Brands wanting a proprietary attribution/data platform included in retainer
Website: Power Digital
11. NoGood
About: NoGood is an AI-native growth marketing agency that runs Marketing Analytics as a named service line alongside paid, organic, SEO/AEO and creative, building 'growth squads' of senior specialists per client rather than junior account teams. It's used by both venture-backed startups and Fortune 100 brands, and pitches its analytics work as the connective layer that proves which of its own paid/organic/creative levers actually moved the outcome.
Key Services: Marketing analytics and attribution, Paid social and paid search, SEO and answer engine optimization (AEO), Organic social and content, Conversion rate optimization, Fractional CMO consulting
Industries Served: SaaS, Fintech, Healthcare, B2B, Consumer/AI startups
Notable Clients: Nike, MongoDB, Intuit, ByteDance (TikTok), Procter & Gamble
Locations: New York, NY, USA, London, UK
Pricing: No public rate card; quoted per scope
Great For: Venture-backed SaaS/tech startups, Brands wanting analytics bundled with paid/organic growth execution, Companies needing AI-search-era attribution (AEO + traditional channels)
Website: NoGood
12. Tinuiti
About: Tinuiti is a large independent media agency built on 'Bliss Point', its marketing operating system connecting audience, creative, media and measurement, with a named Incrementality Lab and Media Mix Modeling practice inside it. Its scale (enterprise clients across apparel, beauty, food & beverage and home services) lets it publish real benchmark research, including incremental-lift findings from its own YouTube Intelligence Suite.
Key Services: Media mix modeling, Incrementality testing (Incrementality Lab), Holistic ROAS / blended measurement reporting, Paid social, search and commerce media buying, Streaming/linear TV and audio measurement, Creative and CRO
Industries Served: Apparel and fashion, Beauty, Food and beverage, Home services, B2B
Notable Clients: Toms, Carter's, DSW, The Shade Store, Blue Apron
Locations: New York, NY, USA, Newport Beach, CA, USA
Pricing: No public rate card; quoted per scope
Great For: Enterprise brands running media across 6+ channels, Brands wanting in-house incrementality/MMM research applied to their account, Mid-market brands using Tinuiti's 'Foundation' offering
Website: Tinuiti
13. Disruptive Advertising
About: Disruptive Advertising is a US digital marketing agency built around a free-audit-first model, claiming that 76% of the ad spend it audits is being wasted, with Data Analytics listed as a distinct service alongside Paid Search, Paid Social, SEO and CRO. It backs its measurement claims with a 90-day results guarantee for qualifying brands, which is unusually direct performance accountability for this category.
Key Services: Marketing data analytics and reporting, Paid search and paid social management, Amazon advertising, Conversion rate optimization, Lead generation strategy, Marketing audits
Industries Served: B2B, B2C, Ecommerce, SaaS, Local/franchise businesses
Notable Clients: ConocoPhillips, Guitar Center, Scotts Miracle-Gro, PennyMac, First Lite
Locations: Pleasant Grove, UT, USA, American Fork, UT, USA
Pricing: No public rate card; quoted per scope
Great For: Mid-market brands suspecting wasted ad spend, Companies wanting a free audit before committing, Brands wanting a performance guarantee tied to measurement findings
Website: Disruptive Advertising
14. Cro Metrics
About: Cro Metrics is an experiment-led growth marketing agency whose Analytics and Customer Journey Analysis practices sit alongside CRO, lifecycle/loyalty and paid media, i.e. it treats measurement as an input to a testing roadmap rather than a report delivered after the fact. Its proprietary 'Iris Intelligence' layer is built to surface which experiments and touchpoints are actually driving the metrics clients care about, and it publishes named client results with specific lift numbers.
Key Services: Customer journey analytics, Conversion rate optimization (CRO), Experiment design and testing roadmaps, Paid media analytics, Lifecycle and loyalty measurement, AI visibility / SEO
Industries Served: Subscription/SaaS, Hospitality, Ecommerce, Fintech, Non-profit
Notable Clients: Bombas, Clorox, Curology, Charles Schwab, Home Chef
Locations: Berkeley, CA, USA, San Francisco, CA, USA
Pricing: No public rate card; quoted per scope
Great For: Brands wanting attribution insight tied directly to a testing/CRO roadmap, Subscription and lifecycle-driven businesses, Enterprise brands needing named, quantified case study results
Website: Cro Metrics
15. Wpromote
About: Wpromote is a large, full-service digital marketing agency (formerly including brands like Metric Theory) with a named Data practice offering 'custom measurement and analytics frameworks', separate from its Media and Creative divisions. Its 'Care Index' product is a differentiated attempt at connecting brand sentiment to bottom-line revenue, an unusual bridge between brand marketing and measurable business outcomes.
Key Services: Custom measurement and analytics frameworks, Paid media (full-funnel, multi-channel), Lifecycle marketing, B2B marketing and demand gen, AI search and GEO optimization, Creative production
Industries Served: B2B, Retail and ecommerce, Financial services, Travel and hospitality, Health and wellness
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: El Segundo, CA, USA, New York, NY, USA
Pricing: No public rate card; quoted per scope
Great For: Enterprise brands wanting media + measurement under one roof, B2B companies needing pipeline-tied measurement, Brands wanting brand-to-revenue modeling (Care Index)
Website: Wpromote
16. Croud
About: Croud is a global, independent media, creative and data agency that runs on 'CroudOS', its proprietary tech platform, and a distributed 'Croudie' network of ~2,900 on-demand digital specialists rather than a fixed office roster. Its Audience Suite (powered by 'BrandCI') and 'Return on Intelligence' positioning are built specifically around incrementality-focused measurement rather than platform last-click metrics.
Key Services: Incrementality-focused media measurement, Audience intelligence and segmentation, Paid and organic media buying, Creative production, Commerce/feed measurement, Data strategy consulting
Industries Served: Retail and ecommerce, B2B/technology, Consumer brands, Hospitality, Fashion
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: London, UK, New York, NY, USA
Pricing: No public rate card; quoted per scope
Great For: Global brands needing a flexible, on-demand specialist model, Companies wanting incrementality over last-click reporting, Multi-market brands needing local media expertise at scale
Website: Croud
17. Media.Monks
About: Media.Monks (part of S4Capital) is a global content, data, media and technology company whose 'Media Acceleration' offering explicitly unifies intelligence, content, media and measurement into one performance system. It absorbed several standalone analytics/martech shops over the years (including former MightyHive and Cardinal Path talent into its broader data practice), giving it enterprise-scale identity and measurement infrastructure most boutiques can't match.
Key Services: Unified measurement and media acceleration systems, First-party data strategy and identity resolution, AI-powered marketing orchestration, Media buying and activation, Commerce and platform engineering, Creative and content production
Industries Served: Enterprise retail, Technology, Automotive, CPG, Financial services
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Hilversum, Netherlands, Los Angeles, CA, USA
Pricing: No public rate card; quoted per scope
Great For: Global enterprises needing measurement built into a broader martech/AI stack, Brands consolidating multiple agency-of-record relationships, Companies wanting first-party data + identity resolution at scale
Website: Media.Monks
18. Merkle
About: Merkle (a dentsu company) is a large customer experience and data agency whose Analytics & Insights capability sits directly alongside its Platforms & Engineering and Consulting practices, and it operates its own identity/data product ('Merkury'). It's built for enterprise loyalty, CRM and personalization programs where attribution has to connect to a persistent customer identity across years, not just a single campaign window.
Key Services: Identity resolution and data unification (Merkury), Marketing analytics and insights, Loyalty program measurement (LoyaltyPlus), CRM and lifecycle marketing, Platform engineering (CDP, MDM), Consulting and business operations
Industries Served: Automotive, Retail, CPG and restaurants, Financial services, Health, Travel and hospitality
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Columbia, MD, USA, New York, NY, USA
Pricing: No public rate card; quoted per scope
Great For: Enterprise brands running loyalty/CRM programs, Companies needing identity resolution across years of customer data, Fortune 500 brands needing a dentsu-network agency of record
Website: Merkle
19. Kepler Group
About: Kepler Group is a data-driven media and marketing agency built around its proprietary 'Kip' intelligence platform, which it uses to turn complex media and measurement data into action for both new-to-market launches and established Fortune 50 brands. It's a Google Premier Partner and publishes broad performance ranges (demonstrable business impact, ROI increases) tied to its measurement-driven media management rather than case-study-specific attribution breakdowns.
Key Services: Media measurement and attribution modeling, Proprietary intelligence platform (Kip) deployment, Paid media planning and buying, Marketing analytics consulting, Brand awareness campaign measurement, Multi-market media management
Industries Served: Pharmaceutical, Ecommerce, Consumer brands, Financial services, Technology
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: New York, NY, USA, London, UK
Pricing: No public rate card; quoted per scope
Great For: Fortune 50 brands needing a proprietary measurement platform, New product launches needing fast attribution feedback, Regulated industries (pharma) needing careful media measurement
Website: Kepler Group
20. Analytic Partners
About: Analytic Partners is a 25-year-old marketing measurement and commercial analytics firm specializing in marketing mix modeling (MMM), agile test-and-learn experimentation, brand-impact modeling and pricing optimization — a suite built specifically to blend algorithmic attribution with incrementality validation. It has been named a Leader in both the Forrester Wave for Marketing Measurement & Optimization and Gartner's 2025 recognition for the category, making it one of the most independently-validated firms in this list.
Key Services: Marketing mix modeling (MMM), Agile test-and-learn experimentation, Brand impact / upper-funnel measurement, Pricing optimization analytics, Customer segmentation, Commercial analytics / scenario planning
Industries Served: Retail, Hospitality, Financial services, CPG, Telecommunications
Notable Clients: Beiersdorf, Cox, Kroger, Nespresso, VF Corporation
Locations: Miami, FL, USA, New York, NY, USA
Pricing: No public rate card; quoted per scope
Great For: Enterprise CPG/retail brands needing MMM at scale, Companies wanting analyst-validated (Forrester/Gartner) measurement partners, Brands needing pricing and brand-impact analytics, not just channel attribution
Website: Analytic Partners
21. Blend360
About: Blend360 is a data, analytics and AI consultancy that builds custom data science and measurement solutions for enterprise clients, including marketing measurement and attribution work as part of broader analytics engagements. It operates internationally (US, UK, India) and tends to staff engagements with dedicated data science teams rather than productized dashboards, which suits complex, custom attribution builds more than templated implementations.
Key Services: Custom marketing analytics and attribution modeling, Data science and AI solution builds, Data engineering and warehousing, Marketing measurement consulting, Predictive analytics, Managed analytics teams (staff augmentation)
Industries Served: Financial services, Retail, Insurance, Telecommunications, Healthcare
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Columbia, MD, USA, London, UK, Bangalore, India
Pricing: No public rate card; quoted per scope
Great For: Enterprises needing custom-built (not off-the-shelf) attribution models, Companies wanting embedded data science teams, Regulated industries needing bespoke measurement builds
Website: Blend360
Quick Comparison Table
| Agency | Key Specialty | Starting Price | Best For |
|---|---|---|---|
| 1. InfoTrust | Data governance + GMP attribution | Quote-based | GMP brands needing compliant tracking |
| 2. Web Tonic | Full-Service Performance Marketing | USD $3,000/mo | Mid-market to Enterprise |
| 3. Adswerve | Data/martech consultancy, GMP+Adobe | Quote-based | Enterprises consolidating martech + measurement |
| 4. Napkyn Analytics | GA4/GMP data activation | Quote-based | GMP licensing + implementation |
| 5. MarketLytics | Scoped, fixed-price analytics/attribution | USD $900 (audit) | Startups wanting fixed-price scoping |
| 6. Cardinal Path | Platform-agnostic analytics implementation | Quote-based | Multi-platform enterprise analytics programs |
| 7. Fospha | Daily MMM + retail measurement OS | USD $1,500/mo | Multi-channel ecommerce brands |
| 8. Common Thread Collective | Incrementality-driven ecommerce growth | Quote-based | 7-8 figure DTC ecommerce brands |
| 9. Journey Further | Marketing science + discovery diagnostics | Quote-based | UK/EU brands needing cross-channel diagnosis |
| 10. Power Digital | Full-funnel agency + proprietary data platform | Quote-based | Multi-channel consumer/CPG brands |
| 11. NoGood | AI-native growth + analytics squads | Quote-based | VC-backed SaaS and tech brands |
| 12. Tinuiti | Full-funnel media + incrementality lab | Quote-based | Enterprise multi-channel media accounts |
| 13. Disruptive Advertising | Audit-led paid media + analytics | Quote-based (free initial audit) | Mid-market brands auditing wasted spend |
| 14. Cro Metrics | Experiment-led growth + journey analytics | Quote-based | Subscription/ecommerce brands running CRO |
| 15. Wpromote | Full-funnel agency + custom measurement | Quote-based | Enterprise brands unifying media + data |
| 16. Croud | Incrementality-led global media + data | Quote-based | Global multi-market brands |
| 17. Media.Monks | Global data/media/AI at enterprise scale | Quote-based | Global enterprises consolidating AOR stack |
| 18. Merkle | Identity resolution + CX-scale analytics | Quote-based | Enterprise loyalty/CRM-driven brands |
| 19. Kepler Group | Proprietary media intelligence platform | Quote-based | Fortune 50 brands and new launches |
| 20. Analytic Partners | Marketing mix modeling + commercial analytics | Quote-based | Enterprise CPG/retail brands |
| 21. Blend360 | Custom data science-built attribution | Quote-based | Enterprises needing bespoke attribution builds |
Frequently Asked Questions
What does a multi-touch attribution engagement actually include?
Usually three phases, and the order matters. First a measurement audit: what is tracked today, what is double-counted, where consent breaks collection. Second the rebuild — server-side tagging, Conversions API for Meta and TikTok, identity keys that survive into a warehouse. Third the model itself, plus the validation layer of geo tests or holdouts that keeps it honest. Firms that jump straight to a dashboard sell you a model built on data nobody has reconciled, and it loses credibility the first time it disagrees with the ad platforms.
How much does it cost?
Only two of the twenty external firms here publish anything: MarketLytics lists a fixed-price analytics audit from USD $900, and Fospha's measurement platform starts around USD $1,500 a month. Everyone else quotes per scope, because implementation hours dominate. In practice a scoped tracking audit sits in the low five figures, a full server-side and warehouse rebuild in the mid five figures, and ongoing measurement retainers scale with data volume and refresh cadence. Ask for the price of the first deliverable, not the programme.
Is attribution still worth building now that cookies are unreliable?
Yes, but not alone. Modern MTA leans on server-side collection, hashed first-party identifiers and modelled conversions rather than third-party cookies, which recovers much of the signal. What it cannot do any more is claim precision it does not have. That is why every credible provider on this list pairs the model with experiments: Tinuiti's own YouTube work reported a 47% average incremental conversion impact beyond last-click, a gap no click-based model finds on its own.
Do we need a data warehouse first?
For anything beyond a single storefront, effectively yes. A warehouse is what lets one customer journey exist in one place instead of once per ad platform, and the customer data platform market underneath that pattern is growing 30.7% a year toward USD $37.11B by 2030. You do not need a large build. Many programmes start with ad platform, analytics and order data landing in BigQuery, then add CRM once definitions hold.
What should we expect in the first quarter?
Weeks one to three go to the audit and the definitions argument. Weeks three to eight rebuild collection and prove parity between platforms, analytics and your order system. Only then does a model earn any weight. The first payoff is usually spend pulled from channels credited for demand they did not create — Disruptive Advertising's audit data puts typical wasted budget at 76% of accounts reviewed, which is why measurement work pays back faster than most buyers plan for.
Choosing a Multi-Touch Attribution Agency
Name the decision the model has to serve. Attribution work drifts when nobody says which weekly or monthly budget call the output will settle. Write that down, along with who owns the budget being moved, and competing proposals suddenly become comparable instead of a contest of dashboards.
Interrogate collection before modelling. Ask a candidate how they would handle consent, server-side tagging and identity keys for your stack specifically. Teams that have rebuilt messy estates answer with trade-offs about cardinality, hashing and warehouse cost. Teams that install tags answer with a platform list.
Insist on a validation plan. A model that has never been checked against a geo holdout is an opinion with decimal places. Get the first experiment written into the scope, with the criterion that decides whether the model or the platform reporting wins the argument.
Buy the documentation too. Tracking specification, naming convention, consent record and change log are what outlive the engagement. If you want measurement built by people who also answer for the media it reallocates, see our data intelligence work, read our latest analysis, or book a call.
