01How does Apex predict which test will win?
Apex looks at how similar tests ended across its 4.3 million A/B tests and combines that with your shop: expected revenue impact, how easy the change is to build and how noticeable it is. The result is one score per idea.
The score ranks an idea against your own backlog. It is not a win probability in the strict sense: it tells you which test to build first. In the vendor’s holdout check, the top third of ideas within a shop won 1.4 to 1.6 times as often.
02What does a shop get from the prediction?
A ranked backlog. Instead of testing in the order ideas came in, you build the ones that are likely to win first and skip the ones that look weak, before anyone spends design or development time on them.
03Which other A/B testing tools predict results?
Kameleoon’s PBX Ideate scores ideas with a model its vendor says was trained on more than 20,000 experiments. Varify suggests ideas from its test patterns. Tools that shift traffic to the leader while a test runs are not predicting before launch.
Disclosure
We build and sell Apex by DRIP. Other tools are described as their vendors document them, checked October 2026.
How each tool predicts, and how to check a vendor’s claim, is in our guide to predictive A/B testing.
