If you are running paid ads without attribution, you are spending blind. Free attribution software gives marketing teams a starting point to connect ad clicks to conversions, understand which channels drive pipeline, and make smarter budget decisions without upfront cost. But not all free plans are created equal. Some offer genuine multi-touch tracking. Others give you just enough data to make you want the paid tier.
This list cuts through the noise. We evaluated nine tools based on what their free plans actually include: attribution model depth, integration coverage, tracking accuracy, and how well they serve B2B SaaS teams specifically. Whether you are just getting started with attribution or evaluating tools before committing to a paid plan, this guide will help you find the right fit. For deeper context on how attribution software can improve your marketing decisions, see our breakdown of 20 ways marketing attribution software can help improve digital marketing efforts.
1. Cometly
Best for: B2B SaaS teams that need full-funnel attribution from first ad click to closed revenue.
Cometly is a marketing attribution and analytics platform built specifically for B2B SaaS companies, connecting ad spend to pipeline and closed-won revenue through multi-touch attribution, server-side tracking, and AI-powered insights.
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Where This Tool Shines
Most attribution tools treat the conversion as the finish line. Cometly treats it as a milestone in a longer revenue story. By integrating with Stripe and your CRM, it maps the journey from the first ad impression all the way through to subscription revenue, giving growth teams a single source of truth that actually reflects business outcomes.
The server-side conversion tracking and Conversion API integration are particularly valuable in 2026, when browser-based tracking has become increasingly unreliable due to cookie restrictions and ad blockers. Cometly captures data that other tools miss, and feeds enriched conversion signals back to Meta, Google, and other ad platforms to improve targeting and optimization.
Key Features
Multi-Touch Attribution: Tracks touchpoints across all major ad channels with multiple attribution model options, giving you a complete view of how each channel contributes to conversions.
Server-Side Tracking and Conversion API: Captures conversion data server-side to bypass browser limitations, improving data accuracy and ad platform signal quality.
AI Ads Manager: Identifies your highest-performing campaigns and ads across every channel, surfacing recommendations so you can scale what works and cut what does not.
Stripe Revenue Integration: Connects ad data directly to subscription revenue, so you can see which campaigns are generating paying customers, not just leads.
Customer Journey Analytics: Visualizes every touchpoint in the buyer journey with full visibility into how prospects move from first click to closed deal.
70+ Native Integrations: Connects with major ad platforms, CRMs, and analytics tools out of the box, reducing setup time and data silos.
Best For
Cometly is the strongest fit for B2B SaaS marketing teams and growth leaders who need attribution that goes beyond session-level reporting. If your goal is to connect ad spend directly to pipeline and revenue, and you want AI-driven recommendations to act on that data, this is the platform built for that job.
Pricing
Free trial available. Paid plans scale based on usage. Contact Cometly directly for current pricing details.
2. Google Analytics 4
Best for: Teams that want free, foundational attribution with native Google Ads integration.
Google Analytics 4 is Google's free web analytics platform with built-in attribution modeling, including a data-driven option that distributes credit across touchpoints based on actual conversion patterns.
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Where This Tool Shines
GA4's data-driven attribution model is genuinely impressive for a free tool. Rather than applying a fixed rule like first-touch or last-touch, it analyzes your actual conversion data to assign fractional credit across touchpoints. For teams running Google Ads, the native integration makes it easy to see campaign performance alongside on-site behavior.
The event-based tracking architecture is a significant upgrade from Universal Analytics. You can define custom conversion events, build exploration reports for funnel analysis, and trace user paths through your site with more flexibility than older session-based models allowed.
Key Features
Data-Driven Attribution: Available on the free tier, this model distributes conversion credit based on observed patterns rather than fixed rules.
Native Google Ads Integration: Connects ad campaign data directly to on-site behavior without additional configuration.
Event-Based Tracking: Flexible conversion setup that lets you define and track meaningful actions beyond just pageviews.
Exploration Reports: Custom funnel, path, and segment analysis tools for deeper behavioral insights.
No Usage Fees: The standard property is completely free with no volume-based charges for most businesses.
Best For
GA4 is best for teams that are primarily investing in Google channels and want a free, reliable baseline for attribution. It is a strong starting point, though B2B teams with complex multi-channel journeys will eventually hit its limitations around cross-channel visibility and account-level reporting.
Pricing
Free for standard properties. GA4 360, the enterprise version with higher data limits and SLAs, is a paid product.
3. HubSpot Marketing Hub (Free)
Best for: B2B teams already using HubSpot CRM who want attribution tied to deal records.
HubSpot Marketing Hub is a free CRM and marketing platform that includes basic source attribution connected directly to contact and deal records, making it useful for teams that want attribution data living inside their pipeline.
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Where This Tool Shines
The real value of HubSpot's free attribution is its CRM-native context. When a lead converts, HubSpot logs the original source alongside the contact record and any associated deal. That means your sales team can see where a prospect came from without leaving the CRM, and your marketing team can filter pipeline by source to understand which channels are producing revenue.
For teams that are already using HubSpot as their system of record, this integration removes the need for a separate attribution layer at the early stages. The setup is straightforward, and the data is immediately actionable for basic reporting.
Key Features
First-Touch and Last-Touch Attribution: Tracks original and most recent source at the contact level, giving a simple but useful view of channel influence.
CRM-Native Deal Tracking: Attribution data is tied directly to deal records, connecting marketing source to sales pipeline.
Form and Landing Page Tracking: Out-of-the-box tracking for HubSpot forms and pages without additional configuration.
Ad Performance Reporting: Basic email and ad performance metrics available on the free tier.
Upgrade Path: Scales into paid tiers that include more advanced multi-touch attribution models and revenue reporting.
Best For
HubSpot's free attribution is best for early-stage B2B teams already operating within the HubSpot ecosystem. If you need more than first-touch and last-touch, or if you are managing a large contact database, the free tier will show its limits quickly.
Pricing
Free plan available. Paid tiers for Marketing Hub start at $15 per seat per month, with more advanced attribution features unlocking at higher tiers.
4. Triple Whale
Best for: E-commerce and Shopify brands that want a unified ad performance dashboard with pixel-based attribution.
Triple Whale is a performance marketing analytics platform built primarily for Shopify and e-commerce brands, offering first-party pixel tracking and a consolidated view of ad performance across major channels.
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Where This Tool Shines
Triple Whale's proprietary pixel collects first-party data directly from your storefront, which helps fill the gaps left by platform-reported attribution. The unified dashboard pulls in spend and conversion data from Meta, Google, TikTok, and other channels so you can compare performance side by side without switching between ad managers.
The post-purchase survey feature is a practical addition for teams that want zero-party data to supplement pixel-based attribution. Asking customers how they heard about you provides a qualitative layer that algorithmic models often miss.
Key Features
Proprietary Pixel: First-party data collection that operates independently of platform-reported attribution.
Unified Ad Dashboard: Consolidates Meta, Google, TikTok, and other channel data into a single performance view.
Post-Purchase Survey Attribution: Collects zero-party data directly from customers about their discovery path.
Creative Analytics: Breaks down ad performance by individual creative asset to identify what is resonating.
Free Plan: A limited free tier is available for teams that want to explore the platform before committing.
Best For
Triple Whale is best suited for D2C and Shopify brands, not B2B SaaS teams. It is included here because some SaaS companies run e-commerce-style conversion funnels, and the creative analytics and unified dashboard can add value in those contexts.
Pricing
Free plan available. Paid plans start at $129 per month, scaling based on store revenue and feature requirements.
5. Ruler Analytics
Best for: B2B companies with phone-heavy or form-heavy lead flows that need offline conversion attribution.
Ruler Analytics is a B2B-focused attribution platform that specializes in connecting offline conversions, including phone calls and form submissions, back to their original marketing source.
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Where This Tool Shines
Most attribution tools stop at the digital touchpoint. Ruler Analytics goes further by tracking what happens after a form is submitted or a phone call is made. It captures the marketing source that drove the lead, follows that contact through the CRM, and attributes closed revenue back to the originating campaign once a deal is won.
This closed-loop approach is particularly valuable for B2B teams where a significant portion of conversions happen offline. If your sales cycle involves phone consultations, demo calls, or in-person meetings, Ruler provides attribution continuity that purely digital tools cannot match.
Key Features
Call Tracking: Ties inbound phone calls to the specific marketing source and campaign that drove them.
Form Submission Attribution: Captures source data from form completions and syncs it to CRM records.
Multi-Touch Attribution: Maps credit across the full buyer journey, not just the first or last touch.
Revenue Attribution: Links closed deal value back to originating marketing activity for true ROI reporting.
CRM Sync: Integrates with major CRM platforms to keep attribution data connected to pipeline records.
Best For
Ruler Analytics is a strong fit for B2B companies in professional services, SaaS, or any industry where phone calls and form submissions are primary lead channels. The free trial gives you enough access to evaluate whether the platform fits your workflow before committing.
Pricing
Free trial available. Paid plans start at approximately $199 per month, with pricing varying based on call tracking volume and feature requirements.
6. Northbeam
Best for: Performance marketing teams managing significant multi-channel ad budgets who need predictive attribution.
Northbeam is a media mix modeling and predictive attribution platform designed for teams that need forward-looking budget intelligence, not just backward-looking conversion reports.
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Where This Tool Shines
Northbeam's predictive attribution approach sets it apart from most tools on this list. Rather than simply reporting what happened, it models what is likely to happen if you shift budget between channels. This makes it a strategic planning tool as much as a measurement platform, which is valuable for teams managing meaningful spend across paid social, search, and display.
The media mix modeling capability helps teams understand channel efficiency at a macro level, moving beyond last-click attribution to see how channels work together to drive conversions over time.
Key Features
Predictive Attribution Modeling: Projects future performance based on historical patterns to inform budget allocation decisions.
Media Mix Modeling: Evaluates the efficiency of each channel in the broader context of your full media investment.
Spend Pacing and Budget Optimization: Provides recommendations for how to allocate and pace ad spend across channels.
Cross-Channel Reporting: Unified reporting across paid social, search, and other channels in a single dashboard.
Trial Access: Demo and trial access available for teams evaluating the platform before a purchase decision.
Best For
Northbeam is best for performance marketing teams with significant ad budgets who need more than standard attribution reporting. It is not a free-forever tool, but trial access makes it evaluable without upfront commitment. Less relevant for early-stage teams with limited spend.
Pricing
Custom pricing based on spend volume and feature requirements. Demo and trial access available on request.
7. Rockerbox
Best for: Teams frustrated by conflicting attribution numbers across ad platforms who need a normalized data view.
Rockerbox is a marketing attribution platform focused on normalizing and unifying data across paid and organic channels, giving teams a consistent, reconciled view of performance instead of competing numbers from different dashboards.
Where This Tool Shines
If you have ever stared at Meta Ads Manager, Google Ads, and your CRM and wondered why the conversion numbers do not add up, Rockerbox addresses that problem directly. Its data normalization layer reconciles attribution discrepancies across platforms so you are working from one consistent dataset rather than three conflicting ones.
The clean interface and straightforward setup make it accessible for marketing teams without dedicated data engineering resources. The free tier gives you a genuine sense of how the platform handles your data before you commit to a paid plan.
Key Features
Data Normalization: Reconciles conflicting attribution data from multiple ad platforms into a single, consistent view.
Multi-Touch Attribution Models: Supports multiple model options so you can compare how different approaches distribute credit.
Unified Channel View: Combines paid, organic, and direct traffic data in one reporting layer.
Channel-Level Spend and Conversion Reporting: Clear visibility into cost and performance at the channel level without platform-specific bias.
Free Tier: Available with limitations on historical data access and the number of integrations included.
Best For
Rockerbox is well-suited for mid-market marketing teams running campaigns across multiple paid channels who need a reliable, de-duplicated view of performance. The free tier is a practical starting point, though teams with complex attribution needs will likely need a paid plan for full historical access.
Pricing
Free tier available. Paid plans are custom-priced based on usage volume and integration requirements.
8. Attributer
Best for: Small B2B teams that need basic, reliable UTM-to-CRM source tracking without technical complexity.
Attributer is a lightweight attribution tool that captures UTM parameters from landing pages and appends them to form submissions and CRM records, giving small teams a simple but dependable source tracking layer.
Where This Tool Shines
Attributer does one thing and does it well. It captures the UTM parameters from the URL when a visitor lands on your site, stores them in the browser, and then passes that source data through when the visitor fills out a form. The result is that every lead in your CRM arrives with channel, source, campaign, and keyword fields already populated.
For teams that are not ready for a full attribution platform but are tired of leads arriving with no source data, Attributer fills that gap with minimal setup and no developer involvement for most standard configurations.
Key Features
UTM Parameter Capture: Reads UTM data from landing page URLs and stores it for form submission appending.
CRM Integration: Appends source fields to records in HubSpot, Salesforce, and other major CRM platforms.
No Developer Required: Standard setup works without engineering resources for most common form and CRM combinations.
Channel and Campaign Fields: Tracks channel, source, campaign, and keyword data for each lead submission.
Free Plan: Available for low-volume use cases with a limit on monthly form submissions.
Best For
Attributer is ideal for early-stage B2B teams or small marketing departments that need basic source tracking without the overhead of a full attribution platform. It works well as a complement to HubSpot or Salesforce, especially for teams that are not yet ready to invest in a dedicated attribution solution.
Pricing
Free plan available for low-volume use. Paid plans start at $49 per month, scaling based on monthly form submission volume.
9. Dreamdata
Best for: B2B teams that need account-level attribution across multi-stakeholder buying groups on a free tier.
Dreamdata is a B2B revenue attribution platform with a free tier that maps the full account-level buying journey across multiple contacts, touchpoints, and channels, making it one of the few free-tier tools genuinely built for B2B complexity.
Where This Tool Shines
Most attribution tools track individual contacts. Dreamdata tracks accounts, which is a critical distinction for B2B buying journeys where multiple stakeholders interact with your content before a deal closes. The platform stitches together touchpoints from different contacts within the same company to give you a complete picture of how the account engaged with your marketing over time.
The free tier includes CRM and ad platform integrations, which is notable. Many free attribution tools limit integrations to push you toward paid plans. Dreamdata's free access gives you a meaningful evaluation window with real data from your actual accounts.
Key Features
Account-Level Attribution: Tracks multiple contacts within a single buying group, mapping the full account journey rather than individual user paths.
Multi-Touch Attribution Models: Includes linear, time decay, and W-shaped models to compare how credit is distributed across touchpoints.
CRM and Ad Platform Integrations: Available on the free tier, connecting pipeline data to marketing activity without a paid upgrade.
Revenue Attribution: Ties closed-won deal value back to the marketing touchpoints that influenced the account.
Self-Serve Setup: Basic tracking can be configured without engineering involvement, making it accessible for lean teams.
Best For
Dreamdata is a strong fit for B2B SaaS companies with longer sales cycles, multiple buying stakeholders, and a need to understand how marketing influences revenue at the account level. The free tier is one of the most substantive on this list for pure B2B use cases.
Pricing
Free tier available. Paid plans start at $999 per month for advanced features, analytics depth, and higher data volumes.
Which Attribution Tool Is Right for You
The right tool depends on where you are in your attribution journey and what your team actually needs to make better decisions.
If you are an early-stage team that just needs source data in your CRM, Attributer or HubSpot's free plan will get you started without friction. If you are running primarily Google channels and want a free, reliable baseline, GA4 is the obvious starting point.
For B2B teams that need account-level attribution without a large upfront investment, Dreamdata's free tier is one of the most genuinely useful options available. And if offline conversions like phone calls and form submissions are central to your lead flow, Ruler Analytics fills a gap that most other tools ignore.
But if you are a B2B SaaS team that needs to connect ad spend to pipeline and closed revenue, with server-side tracking, AI-powered recommendations, and a single source of truth across every channel, the free tools on this list will eventually show their limits. That is the gap Cometly is built to close.
Cometly captures every touchpoint from first ad click to closed-won deal, feeds enriched conversion data back to your ad platforms, and uses AI to surface which campaigns are actually driving revenue. It is not just attribution reporting. It is the foundation for smarter budget decisions at every stage of growth.
Ready to see what full-funnel attribution looks like for your B2B SaaS team? Get your free demo and start capturing every touchpoint to maximize your conversions.
