Pages that sell
Headlines, offers, layouts and calls to action.
- Headlines
- Offers
- Calls to action
ConvertEarly access
Opinions in. Proof out.
Split testing, always on

Split testing means showing two versions of the same thing to two groups of real visitors at the same time, and keeping the one that performs better. Proof does that for websites, landing pages, online shops, emails and newsletters. We built our own product for it: it splits fairly, measures properly, calls a winner only when the result holds, and its agents propose the next test and write the variants, so the learning never stops.
For exampleTwo headlines, one fair split of real visitors, and a winner called only when the numbers carry it.
Most changes to a website are decided in a meeting. Someone likes the new headline, the button moves, and nobody can say afterwards whether it helped or hurt.
Proof replaces opinions with evidence. Every important page, shop and email is always being tested, the winner stays, and the next question is already running.
Headlines, offers, layouts, images and calls to action, tested on real visitors.
Product pages, prices as shown, checkout steps and bundles, tested for revenue, not for clicks.
Subject lines, senders, content and send times, tested on every send.
Visitors split evenly and at random, without slowing the page down.
A winner only when the result holds, measured on what matters to you: leads, sales or revenue.
AI proposes the next test from what it has learned and writes the variants, for a person to approve.
Headlines, offers, layouts and calls to action.
Every ad and campaign page tested against its twin.
Product pages, bundles and checkout steps.
Subject lines, senders, content and send times.
The page, shop or email that matters most, and the goal it should reach.
Two versions, a fair split of real visitors, running until the result holds.
The winner stays live. The other one still teaches us something.
The agents propose the next test, you approve it, and it starts.
Human led today. Every product has its own next step towards autonomous.
Proof at each stage, from human led to autonomous
Split tests for pages, shops, ads and emails. Proof runs the tests a person approves and names a winner only when the numbers carry it.
For the person who will have to live with it.

Start with Proof
From CHF 1'800 a month
Send us the page that matters most. We tell you the first three things we would test.
Send us the page that matters most. We will tell you what to test first.
BeformTurns a client's photo of a kitchen, bathroom, facade or garden into the finished project, so you sell it first.
NorthEvery number that matters for a decision in one view, with an AI assistant to ask questions and to decide with.
TwinYour company's AI brain: knowledge, rules, skills and integrations, working in Claude, ChatGPT or your own private AI.