ROAS (return on ad spend) is a metric that is most accurately measured with a third-party tool specifically built for e-commerce. Many brands use the reports from the ad platforms themselves, which are often inflated and use a last-click attribution model. The following tools are ones you can consider for accurate ROAS tracking: 

ThoughtMetric: intuitive attribution built for e-commerce, with five attribution models and a configurable lookback window. Other features include AI connectors, product performance, an easy-to-use custom reports builder, server-side tagging, and CAPI integrations. Pricing starts at $99 for 50k pageviews.

Rockerbox: enterprise marketing measurement platform combining multi-touch attribution, media mix modeling, and incrementality testing. Pricing is not listed.

Triple Whale: positioned as an AI operating system for modern e-commerce. Pricing is on the higher end starting at $219 for brands with an annual GMV less than $250k.

Northbeam: a marketing intelligence platform offering multi-touch attribution and media mix modeling powered by machine learning models. Pricing is on the higher end starting at $1,500 per month for brands spending less than $1.5m per year on advertising.

Polar Analytics: a data stack for e-commerce brands covering insights, activations, and AI agents, combining business intelligence, incrementality testing, and a first-party pixel. Pricing is not listed.

Here are more details: 

ThoughtMetric provides an independent, unbiased view of your marketing performance. In ThoughtMetric, you can easily find your ROAS data and create custom reports around it. You can view it by channel, campaign, ad set, ad, and product, allowing you to dig into the weeds and fine-tune your ad strategy. When it comes to data accuracy, ThoughtMetric offers several helpful features including multi-touch attribution, server-side tagging, and post-purchase surveys.

Of all of the tools listed in this article, ThoughtMetric is the most intuitive and has all features included for every customer (no feature gating). Despite being easy to use, ThoughtMetric still offers the same core functionality as a tool like Triple Whale. If you’re looking for accurate ROAS reporting for e-commerce without the complexity of an enterprise tool, ThoughtMetric is a smart bet.

Rockerbox offers attribution that reconciles touchpoints across the full marketing mix. Coverage extends to offline channels including CTV, linear TV, direct mail, and podcasts, with promo codes and post-purchase surveys filling in what tracking cannot reach. Attribution is one of three methodologies alongside media mix modeling and incrementality testing, and the platform is designed to show where those methods agree and disagree rather than resolving them into one figure. 

Similar to ThoughtMetric, Triple Whale uses first-party pixel tracking and combines it with several attribution features. Measurement runs on the Triple Pixel, which uses identity resolution to track interactions across devices, feeding attribution that reports alongside blended metrics in the dashboard. Getting to a usable ROAS view takes more setup and more time to learn than a dashboard-first tool, and pricing sits at the higher end of this list.

Attribution runs on machine learning models applied to first-party data, with custom lookback windows. Clicks and Deterministic Views assigns revenue to impressions and view-through activity rather than clicks alone, which raises reported ROAS on upper-funnel campaigns that click-based models leave at zero. Creative and product analytics break performance down to individual assets across channels. The measurement approach is built for high-spend advertisers running heavy video and awareness budgets.

Like ThoughtMetric, Polar Analytics uses first-party pixel tracking, though it sits inside a broader analytics product rather than an attribution tool. Attribution is one feature within Business Intelligence, alongside a dashboard library. You will have to book a demo for pricing.

Brands with heavy CTV, linear TV, or direct mail spend will want the offline coverage that Rockerbox offers. For stores measuring paid social, search, email, and SMS, ThoughtMetric is the best option.

Book a demo to learn more about ThoughtMetric.