Gym1RM (One Rep Max Calculator) app for iPhone and iPad

4.0 ( 6960 ratings )

Utilities Health & Fitness
Developer: Runloop Ltd

Free

Current version: 1.3, last update: 8 years ago
First release : 08 Oct 2009
App size: 1.59 Mb

Gym1rm is a utility you can use to predict your theoretical one rep max (1rm).

To use:
1. Go to gym
2. Select exercise you wish to know your 1rm
3. Select a weight you can perform 1-15 reps before reaching positive failure.
4. Perform exercise
5. Enter weight used
6. Enter number of reps performed
7. User Rep Max slider to find your predicted rep max for 1-15 reps

The application defaults to kilograms but you can change this to pounds in the iPhone Settings applications.