245+ iOS apps curated and reviewed
The best 1rm calculator apps on iPhone average 4.7★ across 245+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.9★ (128) | No | Yes | Oct 2026 | |
| 2 |  | Free | 4.5★ (222) | No | Yes | Oct 2026 | |
| 3 |  | Free | — | Yes | Yes | Oct 2026 | |
| 4 |  | Free | 4.7★ (7) | No | Yes | Oct 2026 | |
| 5 |  | Free | 4.5★ (12) | No | No | Oct 2026 | |
| 6 |  | Free | — | Yes | No | Oct 2026 | |
| 7 |  | Free | 4.4★ (185) | Yes | Yes | Nov 2026 | |
| 8 |  | Free | 5.0★ (4) | No | Yes | Oct 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 maximum weight lifted for a single repetition. Input your successful lifts and reps to gauge strength, compare progress, and plan future training. Offers advanced features for detailed tracking and analysis.
