Attribution Tools With a Refund Guarantee or Risk-Free Trial

A refund guarantee and a risk-free trial are different things, and few attribution vendors publish either. As read from their public pricing pages on 8 September 2026, Northbeam quotes its higher tiers through sales, Rockerbox does not publish pricing, Triple Whale has a free tier for smaller stores, Cometly states it has no free trial, and Elevar, a tracking product rather than an attribution model, offers a 15-day trial. Causality Engine's entry is a EUR 99 one-time causal read that is refunded if the first read does not pay for itself in one reallocation decision, with a 14-day trial of the Pro tier included.

Why the distinction matters before the price does

A demo shows you the vendor's data. A trial shows you your data, for a period, before money changes hands. A refund lets you pay, see the result on your own data, and get the money back if the result was not worth it. For a decision about which channel to cut, only the last two tell you anything, because the question is what the tool says about your channels, not how the dashboard looks on someone else's.

The terms, as read on 8 September 2026

"Not stated in public materials" means exactly that: no refund policy was found on the vendor's public pages on the date read. It is not a claim that none exists; ask the vendor. The comparison page carries the same records with the capture date on each row.

What "the read is the trial" means in practice

There is no free tier and no time-limited trial of the read itself. You export a GA4 window, pay EUR 99, and get per-channel incremental ROAS with confidence intervals in 5 to 10 minutes. If that result does not pay for itself in one reallocation decision, the EUR 99 is refunded, processed within five business days. The 14-day Pro trial that comes with it covers automated ingestion, the full look-back, the chatbot over your data and budget alerts; Pro is EUR 299 a month after that, cancel any time, and the EUR 99 read stays available alongside. Marketing analytics with cancel-anytime pricing covers the subscription side.

The honest fit floor, because a refund is not the same as a good read

A refund protects the money, not the decision. Below roughly 5,000 euros a month in paid spend, or with fewer than 40 days of history, the intervals on a causal read are usually too wide to move a decision, and the honest answer is to wait. Two of the five customer cases published on this site are brands that were declined for that reason and published anyway. A vendor that would rather take the money is a vendor whose refund policy you will need.

Why cheap and refundable is not the same as good

A trial or a refund tells you nothing about whether the number is right. The Price of Being Found's audit of 31 commercial measurement vendors found none with a published validation against randomised experiments in public materials, and its advice is to ask every vendor, including this site's publisher, what its system would report if your advertising had no effect at all. The cheapest way to get a causal attribution read and how to vet an attribution vendor before you sign cover the price and the questions respectively.

What to do this week

• If you own the budget: run the EUR 99 read on the last 40 days at app.causalityengine.ai. If it does not move a decision, it costs nothing.
• If you have to defend the number: before any subscription, ask the vendor in writing for its refund terms and for a trial on your data, not a demo on theirs.

The interactive demo runs the read on a sample store with no signup.

Competitor terms are each vendor's publicly listed terms as read on 8 September 2026 and change without notice; verify on the vendor's own site before relying on them. Vendors without public pricing are marked as such. Causality Engine terms as stated on causalityengine.ai on 9 September 2026.