Easily calculate your one-rep max (1RM) strength with this app. It supports RPE input and allows you to estimate rep maxes based on your 1RM. Track your progress by saving your 1RM history for different exercises.





248+ iOS apps curated and reviewed
Finding the right one rep max calculator apps can be overwhelming with so many options. We've analyzed 248+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 4.9★ (109) | No | Yes | Sep 2026 | ||
| 2 | Free | 4.4★ (118) | No | Yes | Sep 2026 | ||
| 3 | Free | 4.4★ (178) | Yes | Yes | Sep 2026 | ||
| 4 | Free | 4.5★ (222) | No | Yes | Sep 2026 | ||
| 5 | Free | 4.5★ (11) | No | No | Sep 2026 | ||
| 6 | Free | — | Yes | No | Aug 2026 | ||
| 7 | $0.99 | 4.5★ (2) | No | No | Sep 2026 | ||
| 8 | Free | 5.0★ (3) | No | Yes | Aug 2026 |





Easily calculate your one-rep max (1RM) strength with this app. It supports RPE input and allows you to estimate rep maxes based on your 1RM. Track your progress by saving your 1RM history for different exercises.





Estimate your one rep max weight for various lifts using popular formulas. Track your progress over time with a built-in logbook. Offers custom lift creation and extended repetition calculations with a premium upgrade.






Safely estimate your maximum lift potential for various strength exercises using scientific formulas. Track your progress visually, set goals, and fine-tune estimates with perceived exertion. Ideal for powerlifters, CrossFit athletes, and strength enthusiasts.