My 1 Rep Max
My 1 Rep Max is made and published by James T. Constant. AppBrain is an independent app data site and isn't affiliated with James T. Constant. The app name, icon, screenshots and description belong to James T. Constant and are shown as published on the App Store.
AppBrain's verdict
EstablishedWell rated- Rating on App Store
- 4.39
- 119 ratings
- Last updated
- October 12, 2026
Users rate it well: 4.4 stars from 119 ratings.
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Similar apps and more from James T. ConstantAlternatives to My 1 Rep Max
Releases
Updates seen on the App Store- Version
- 3.1.1
- Launched
- February 2018
No changelog data
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 17.3 MB
- Content rating
- Everyone
Technologies used by My 1 Rep Max
About the app and developer
About My 1 Rep Max
My 1 Rep Max is a health & fitness app developed by James T. Constant.
What is the rating of My 1 Rep Max?
My 1 Rep Max is rated 4.39 out of 5 stars, based on 120 ratings.
Is My 1 Rep Max free?
My 1 Rep Max is free. The app size is 17.34 MB. The latest version available is 3.1.1. The last update was on October 12, 2026.
What are the requirements for My 1 Rep Max?
The app has a content rating of Everyone. The app has been available on the App Store since February 2018.
Developer information for James T. Constant
Address:
Store listing
By James T. Constant, from the App Store
Description by James T. Constant Written by the developer, not by AppBrain. Click to read.
My 1 Rep Max gives you a fast, simple way to estimate your one-rep max and keep a record of the lifts that matter to you.
Choose your lift, enter the weight and reps, and instantly see your estimated 1RM along with useful training percentages. Choose from several of the most popular 1 Rep Max formulas so you can calculate your results the way you prefer.
Save your lifts to your lift log and build a history of your training over time. Whether you're chasing a new bench press PR, building your squat, improving your deadlift, or simply trying to get stronger, My 1 Rep Max helps you see where you are and where you're headed.
GO FURTHER WITH MY 1 REP MAX PREMIUM
Premium gives you more control over your training and more insight into your progress:
• See your progress over time with interactive charts
• Create your own custom lifts
• Calculate your 1RM using more than 10 repetitions
• Unlock all Premium features with one purchase — no subscription
Simple when you need a quick calculation. Powerful enough to become part of your training.
A NOTE ABOUT SAFETY
One-rep max calculations are estimates, and accuracy can vary based on training experience, technique, fatigue, individual physiology, and other factors.
Attempting a true one-rep maximum can involve significant risk. Use appropriate safety equipment, have a qualified spotter when necessary, and never attempt a weight you do not feel prepared to lift safely.
AND ONE MORE THING...
My 1 Rep Max will never interrupt your workout to ask you for a rating or review. If you enjoy using the app and would like to support it, you can leave a rating or review anytime from Settings.