# 筋トレメモ＆RM換算機 vs Simplest Strength Log

The clearest difference is in-app purchases: Simplest Strength Log at none against 筋トレメモ＆RM換算機's 1. Simplest Strength Log also leads on update cadence (every 4 days vs every 2 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. 筋トレメモ＆RM換算機 sells 1 one-off in-app purchase. Simplest Strength Log asks for nothing beyond the download.

筋トレメモ＆RM換算機 ships an update every 2 months, Simplest Strength Log every 4 days. The most recent releases landed on September 24, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | 筋トレメモ＆RM換算機 | Simplest Strength Log |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 3 MB |
| Requires iOS | **16.5** | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [KEITA SHOJI](https://appshunter.io/developer/1758998640) | [Daisuke Ikeshima](https://appshunter.io/developer/501449724) |

## What reviewers say

### 筋トレメモ＆RM換算機

[App page](https://appshunter.io/ios/app/rm/id6569255164)

This app helps you scientifically improve your strength training by calculating your 1RM, managing workout volume, and logging your sessions. Visualize your progress with graphs and data to ensure safe and efficient growth.

**Highlights:** High-accuracy 1RM calculation, RM reverse simulator for goal setting, Total volume visualization, Smart history and monthly logs, One-tap set copying, Rest timer with background support

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $2.99 | one-time |


### Simplest Strength Log

[App page](https://appshunter.io/ios/app/simplest-strength-log/id6740480967)

This strength training log app prioritizes ease of use for recording workouts. Developed by an individual for personal use, it aims for continuous improvement based on user feedback. Contact the developer via the App Store for feature requests.

**Highlights:** Easy workout logging, Personal development focus, User feedback integration, Streamlined interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 筋トレメモ＆RM換算機 free?

筋トレメモ＆RM換算機 is free to download, with in-app purchases available.

### Is Simplest Strength Log free?

Simplest Strength Log is free to download, with no in-app purchases.

### Do 筋トレメモ＆RM換算機 or Simplest Strength Log have ads?

Neither 筋トレメモ＆RM換算機 nor Simplest Strength Log shows ads.

### Which is updated more often, 筋トレメモ＆RM換算機 or Simplest Strength Log?

筋トレメモ＆RM換算機 ships an update every 2 months, and Simplest Strength Log every 4 days. Most recently, 筋トレメモ＆RM換算機 was updated on September 24, 2026 and Simplest Strength Log on June 1, 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.*