# 1RM Max Calculator vs おむすび Powered by keymoti

The clearest difference is in-app purchases: おむすび Powered by keymoti at none against 1RM Max Calculator's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 1RM Max Calculator sells 3 one-off in-app purchases. おむすび Powered by keymoti asks for nothing beyond the download.

1RM Max Calculator ships an update every 6 weeks, おむすび Powered by keymoti every 5 weeks. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 1RM Max Calculator | おむすび Powered by keymoti |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (22 ratings)](https://appshunter.io/ios/app/1rm-max-calculator/id1110502852/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 70.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 16 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kazumasa Shimomura](https://appshunter.io/developer/1110502851) | [CODE7, K.K.](https://appshunter.io/developer/1355962964) |

## What reviewers say

### 1RM Max Calculator

[App page](https://appshunter.io/ios/app/1rm-max-calculator/id1110502852)

Instantly calculate your one-rep max (1RM) for bench press, squat, and deadlift using 7 scientific formulas. Track your progress with intuitive charts and calendar records. Ideal for athletes and lifters aiming for more scientific and effective training.

**Highlights:** 7 scientific 1RM calculation formulas, Supports bench press, squat, and deadlift, Progress tracking and data visualization, Calendar for daily record management, One-tap data saving, Offline functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator for deadlift | $2.99 | one-time |
| Calculator for squat | $2.99 | one-time |
| Ad Blocker | $2.99 | one-time |


### おむすび Powered by keymoti

[App page](https://appshunter.io/ios/app/powered-by-keymoti/id1497843737)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 1RM Max Calculator free?

1RM Max Calculator is free to download, with in-app purchases available.

### Is おむすび Powered by keymoti free?

おむすび Powered by keymoti is free to download, with no in-app purchases.

### Do 1RM Max Calculator or おむすび Powered by keymoti have ads?

Neither 1RM Max Calculator nor おむすび Powered by keymoti shows ads.

### Which is updated more often, 1RM Max Calculator or おむすび Powered by keymoti?

1RM Max Calculator ships an update every 6 weeks, and おむすび Powered by keymoti every 5 weeks. Most recently, 1RM Max Calculator was updated on October 21, 2026 and おむすび Powered by keymoti on October 25, 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.*