Rack is a hypertrophy exercise companion app.

Create a training plan mesocycle using and included plan, or make your own one. There is a large selection of exercises, but you can also add your own ones.

The app tracks you progression throughout the mesocycle, suggest rep targets, and adds or removes setts/adjust you training to try to achieve optimal muscle growth.

The app is very much in beta, vibecoded, sporadically developed and updated, and should not be used for making any serious fitness decisions. That being said, you are free to try it out and test for your own use.

Saving the page as a web app is the best way to ensure data isn’t lost.