My 1 Rep Max vs RM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
My 1 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.
- 1 Rep Max calculator
- Logbook for progress tracking
- Multiple popular formulas
- Custom lift creation (Premium)
- Extended repetition calculations (Premium)
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Know your strength. Track your progress. Keep getting stronger. My 1 Rep Max gives you a fast, simple way to estimate your one-rep max and keep a record of the lifts that matter to you. Choose your lift, enter the weight and reps, and instantly see your estimated 1RM along with training percentages. Choose from several of the most popular 1 Rep Max formulas so you can calculate your results the way you prefer. Save your lifts to your lift log and build a history of your training over time. Whether you're chasing a new bench press PR, building your squat, improving your deadlift, or simply trying to get stronger, My 1 Rep Max helps you see where you are and where you're headed. GO FURTHER WITH MY 1 REP MAX PREMIUM Premium gives you more control over your training and more insight into your progress: • See your progress over time with interactive charts • Create your own custom lifts • Calculate your 1RM using more than 10 repetitions • Unlock all Premium features with one purchase — no subscription Simple when you need a quick calculation. Powerful enough to become part of your training. A NOTE ABOUT SAFETY One-rep max calculations are estimates, and accuracy can vary based on training experience, technique, fatigue, individual physiology, and other factors. Attempting a true one-rep maximum can involve significant risk. Use appropriate safety equipment, have a qualified spotter when necessary, and never attempt a weight you do not feel prepared to lift safely.
RM
Calculate elevation weights and training times to maximize your efficiency during weight training. Easily switch units by touching them.
- Calculate elevation weights
- Calculate training times
- Maximize training efficiency
- Lean training optimization
- Unit switching
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You can calculate elevation weights and times according to your purpose during weight training. Let's maximize efficiency with lean training Touch the unit to change the unit.
Screenshots
Verdict
The clearest difference is review sentiment: RM at 100% against My 1 Rep Max's 57%. RM also leads on in-app purchases (none vs 1) and device support (3 vs 1). My 1 Rep Max's advantage is rating (4.4 vs 2.0) and ratings volume (119 vs 1). On price and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. My 1 Rep Max sells 1 one-off in-app purchase. RM asks for nothing beyond the download.
My 1 Rep Max holds the better App Store score, 4.4 against 2.0. That said, the two scores are not equally well evidenced: My 1 Rep Max has 119 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 57% of My 1 Rep Max's written reviews are positive against 100% of RM's, so the app with the better star average is not the one people write more warmly about.
My 1 Rep Max ships an update every 11 days, RM monthly. Both last shipped on November 2, 2026.
| Parameter | My 1 Rep Max | RM |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (119 ratings) — better | 2.0 (1 ratings) |
| Positive reviews | 57.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 119 — better | 1 |
| Update frequency | Every 11 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 10.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | James T. Constant | Ikki Yoshimiya |
Customer experience
My 1 Rep Max
RM
In-app purchases
My 1 Rep Max
- My 1 Rep Max Premium$7.99
RM
No in-app purchases







