Tools that answer the question before you spend the traffic
No signup, no email wall, no scoring your store out of ten. Each one does a single job properly and shows its working, so you can check the maths rather than trust us on it.
A/B test sample size and duration calculator
Tells you how many weeks a test would take at your traffic, and says plainly when the answer is that you cannot run it.
Open the tool ↗Sample ratio mismatch checker
Paste your split and find out whether the traffic reaching each variant is uneven enough to void the result, plus what to go and look at if it is.
Open the tool ↗Revenue impact calculator
Turns a conversion-rate lift into the only number a finance team cares about, with the probability of actually getting it left in rather than quietly dropped.
Open the tool ↗
Got a number you do not like?
If the maths says your traffic cannot support the test you planned, that is worth a conversation rather than a workaround. We will tell you what we would do instead.
Talk to us ↗