The PRO version is for those who need the features not available in the free version - and those who just like the Fitness Logbook app and want to support its development.

In addition to the functions from the free version, PRO at the moment has the following:
- Use of unlimited routines and custom exercises
- Use of modules in routines and workouts
- Creation and use of training programs
- Advanced body measurements
- Recording and tracking of nutrition, sleep, and consumption of supplements and macronutrients