Great deal
Best thing is no ad in app or subscriptions.

This app assists with weightlifting calculations, including plate loading, weight conversion, and estimating one-rep max. It helps optimize bar loading for various exercises.
1.2.1
April 8, 2026
UI fixes, better setup defaults for plates, aligned weight colors and diameters to IPF standards.
Rack Stacker is a toolkit designed to help weightlifters with various calculations. It can calculate plate loads, convert weights, determine percentages of your max, and optimize how you load plates on a barbell for different lifts.
Rack Stacker is a paid application, priced at $1.99. This one-time purchase grants you access to all its features without any additional costs or subscriptions.
Currently, Rack Stacker is available for iPhone. The app is designed to run on Apple's mobile operating system.
Rack Stacker has an age rating of 4+, making it appropriate for a wide range of users. Its functionality is focused on fitness calculations.
The latest version of Rack Stacker is 1.2.1, which was released on April 8, 2026. Updates are provided by the developer to improve functionality and address any issues.
No, Rack Stacker is ad-free. Users can enjoy the full functionality of the app without any advertisements interrupting their experience.
Rack Stacker has received an excellent rating of 5.0 stars based on 1 review. This indicates a very positive user reception for the app's utility.
Yes, Rack Stacker includes a feature to estimate your one-rep max. This is a key function for strength athletes looking to track their progress and set new personal bests.