# My 1 Rep Max vs RM

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.

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.

## The numbers

| Metric | My 1 Rep Max | RM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (119 ratings)](https://appshunter.io/ios/app/my-1-rep-max/id1317637753/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/rm-calculator/id1429516288/reviews) |
| Number of ratings | **119** | 1 |
| Positive reviews | 57.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 11 days** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 21 MB | 22 MB |
| Requires iOS | 18.6 | **10.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [James T. Constant](https://appshunter.io/developer/1317637752) | [Ikki Yoshimiya](https://appshunter.io/developer/1109688814) |

## What reviewers say

### My 1 Rep Max

[App page](https://appshunter.io/ios/app/my-1-rep-max/id1317637753)

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.

**Highlights:** 1 Rep Max calculator, Logbook for progress tracking, Multiple popular formulas, Custom lift creation (Premium), Extended repetition calculations (Premium)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| My 1 Rep Max Premium | $7.99 | one-time |


### RM

[App page](https://appshunter.io/ios/app/rm-calculator/id1429516288)

Calculate elevation weights and training times to maximize your efficiency during weight training. Easily switch units by touching them.

**Highlights:** Calculate elevation weights, Calculate training times, Maximize training efficiency, Lean training optimization, Unit switching

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is My 1 Rep Max free?

My 1 Rep Max is free to download, with in-app purchases available.

### Is RM free?

RM is free to download, with no in-app purchases.

### Which has better reviews, My 1 Rep Max or RM?

My 1 Rep Max is rated higher. My 1 Rep Max averages 4.4 out of 5 from 119 ratings, while RM averages 2.0 from 1 ratings.

### Do My 1 Rep Max or RM have ads?

Neither My 1 Rep Max nor RM shows ads.

### Which is updated more often, My 1 Rep Max or RM?

My 1 Rep Max ships an update every 11 days, and RM monthly. Most recently, My 1 Rep Max was updated on November 2, 2026 and RM on November 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*