1RM, RPE & Fat Calc - MachoMAX

1RM, RPE & Fat Calc - MachoMAX

MajimeSoft·FREE
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Description

MachoMAX is a 1RM, RPE, plate loading, and body fat calculator for strength training.
A fast, offline gym tool with no login required.

- 1RM Calculator
Estimate your one-rep max with three popular formulas: O’Conner, Epley, and Brzycki. Choose the one that fits your training style and goal.

- RPE Calculator
See the relationship between RPE and reps at a glance.
Switch between RPE-based and rep-based views to plan your training load precisely.

Plate Calculator
Instantly find the plate combination needed for your target weight. No more mental math between sets.

- Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy method—just measure a few body parts. No smart scale required.

MachoMAX focuses on simplicity, accuracy, and speed.
No clutter, no unnecessary features—just practical tools that help you train smarter every day.

Developer

MajimeSoft

Developer ID: 7835835578446146019

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Recent Reviews

Jonathan Morgan

v1.0.2

The app is extremely useful. Its "all-in-one" feel and speed beat the rest out there silly. There's one thing I'd like you to include though: the ability to set plate weight on the "plate settings" section. For example, creating a plate that's 26 lbs in weight. Some gyms plates have weird poundage, and many have to make-do with them. Adding that small option would be invaluable help.

Developer Response

That’s a great suggestion, and you’re absolutely right that some gyms use non-standard plate weights. Supporting fully custom plates introduces a much more complex optimization problem, so I want to be careful to implement it in a way that stays fast and predictable. I’ll keep exploring possible approaches — thank you for the thoughtful feedback!

Jan 29, 2026

Jan 29, 2026

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