1RM Max Calculator
7 proven formulas for lifting
Only for iPhone
Free · In‑App Purchases · Designed for iPhone
iPhone
Most accurate 1RM calculation using 7 scientific formulas! Professional-grade precision trusted by athletes. Discover your true max with simple operation.
Accurate 1RM calculation using 7 scientific formulas
Calculate your maximum weight for bench press, squat, and deadlift instantly!
Using the average of 7 different proven formulas (Epley, Brzycki, Lander, and more) trusted by professional athletes to determine the most reliable 1RM.
[Why choose this app?]
- High-precision 1RM calculation using multiple formulas
- Simple and intuitive interface
- Comprehensive progress tracking
- Data visualization for growth monitoring
[Key Features]
- Support for 3 major lifts (bench press, squat, deadlift)
- 7 scientific calculation formulas for precise results
- Calendar function for daily record management
- Graph display for progress visualization
- One-tap data saving
- Full offline functionality
[Perfect for]
- Athletes wanting to track training effectiveness
- Lifters needing accurate 1RM calculations
- Anyone planning structured training programs
- Fitness enthusiasts tracking their progress
Make your training more scientific and effective.
Take your lifting to the next level!
Trusted by over 7,000 users worldwide.
- Weight display now supports increments of 0.5.
- App stability has been improved.
The developer, Kazumasa Shimomura, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kazumasa Shimomura
- Size
- 9.1 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Calculator for squat $0.99
- Calculator for deadlift $0.99
- Ad Blocker $0.99
- Copyright
- © KazLab Inc.