250+ iOS apps curated and reviewed
The best 1rm calculator apps on iPhone average 4.7★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.9★ (86) | No | Yes | Aug 2026 |
| 2 |  | Free | 4.8★ (8) | No | Yes | Jul 2026 |
| 3 |  | Free | 4.5★ (217) | No | Yes | Aug 2026 |
| 4 |  | Free | 4.4★ (178) | Yes | Yes | Aug 2026 |
| 5 |  | Free | — | Yes | No | May 2026 |
| 6 |  | Free | 4.4★ (111) | No | Yes | Jul 2026 |
| 7 |  | Free | 4.0★ (6) | No | No | Jul 2026 |
| 8 |  | Free | 4.9★ (11K) | Yes | 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.
This app helps you determine your one-repetition maximum (1RM) for various strength exercises. It uses several well-known formulas to calculate your maximum lift capacity, aiding in tracking training effectiveness and progress.
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.
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.
Calculate your maximum weight for a single repetition of any exercise. This tool helps estimate your strength for key lifts, aiding in training program design and progress tracking. Prioritize safety and effective programming by understanding your one-rep max.
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.
Calculate your one rep max (1RM) and explore potential rep maxes at various intensities. Supports both pounds and kilograms, with an intuitive interface and offline functionality for seamless strength training tracking.
This app simplifies tracking your progress on the 5/3/1 strength training program. It calculates and displays weights, reps, and sets based on your one-rep max, allowing you to easily plan and execute your workouts. Rounding options help match available gym plates.
This app helps you plan and calculate percentage-based workouts. It includes a one-rep max estimator and customizable weight settings for a personalized training experience. Easily track your sets and reps without manual calculations.
Easily calculate and track your one-rep max (1RM) for any lift. Estimate your maximum weight safely without testing, and monitor your progress over time with detailed charts. Improve your training with expert articles.
This app provides personalized workout plans and meal suggestions to help you achieve your health and fitness goals. It offers hundreds of exercises with video guides, progress tracking, and nutrition planning for various diets.
Easily calculate your One Rep Max (1RM) for various strength exercises. Track your progress over time with saved calculations, view personalized percentages, and visualize your strength gains through charts. Supports multiple exercise types and custom units.
Easily calculate the weight plates needed for your desired lift or estimate your one-rep max using science-backed formulas. Customize your bar and plate weights for personalized calculations. Save workouts and view progress in charts.
