1RM Max Calculator
Kazumasa Shimomura Health & Fitness iPhoneiPadiPod touch
1RM Max Calculator is a free Health & Fitness app for iPhone and iPad by Kazumasa Shimomura. Rated 4.2/5 from 22 ratings. Requires iOS 16.6.
- Rating
- 4.2
- 22 ratings
- Price
- Free
- on the App Store
- Size
- 10 MB
- Age 4+
- Updated
- May 18
- 2026 · v3.5.0
Screenshots
About 1RM Max Calculator
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.
Ratings & reviews
4.2
22 ratings
What’s new
Version 3.5.0 · Updated May 18, 2026
- Added a setting to choose the calculation method - Added support for Conservative and Standard calculation modes - Results now update based on the selected calculation method
App privacy
The developer, Kazumasa Shimomura, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
- Diagnostics: Crash Data
Used for: Analytics
Alternatives to 1RM Max Calculator
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| 1RM Max Calculator | 4.2 / 5 (22 ratings) | Free | May 18, 2026 | |
| BenchPressKing - ベンチプレス記録 | – | Free | Jan 6, 2026 | Compare |
| Smolov Jr: Workout Log & 1RM | – | Free | Oct 9, 2026 | Compare |
| Simple Workout Tracker: MUSCLY | 5.0 / 5 (2) | Free | Sep 10, 2026 | Compare |
| 1RM Calculator | 4.9 / 5 (123) | Free | Oct 5, 2026 | Compare |
| Workout Log KINNIK: AI Advisor | 5.0 / 5 (1) | Free | Aug 25, 2026 | Compare |
| SBD - BIG3を本気で伸ばす記録アプリ | 5.0 / 5 (1) | Free | May 2, 2026 | Compare |
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