A web application that helps you design and evaluate the results of A/B tests.
Samples too small may lead to inconclusive results, while too large may have unnecessary costs and risks. Find the right size with abtester.
In a properly designed A/B test, a difference between the groups is either due to a real effect or to random chance. Calculate the probability of each case and if the difference is statistically significant.
You are welcome to help develop abtester! There are multiple ways to contribute, such as reporting a bug or requesting a feature. You can also just ask a question, or join the discussions with the community. To submit code for a pull request, make sure to read the guide on how to contribute.
If you would like to provide feedback, learn more about abtester, or anything else, please send an email to contact@abtester.app.