# コレクトサーフアプリ vs 筋トレメモ＆RM換算機

The clearest difference is ads: 筋トレメモ＆RM換算機 at none against コレクトサーフアプリ's shown. コレクトサーフアプリ's advantage is update cadence (every 2 weeks vs every 2 months) and device support (3 vs 1). On price, review sentiment, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. コレクトサーフアプリ sells 7 in-app purchases, starting at $5.99 per month and 筋トレメモ＆RM換算機 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

コレクトサーフアプリ ships an update every 2 weeks, 筋トレメモ＆RM換算機 every 2 months. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | コレクトサーフアプリ | 筋トレメモ＆RM換算機 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 103 MB | 5 MB |
| Requires iOS | **15.5** | 16.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Gene,Inc.](https://appshunter.io/developer/1674796053) | [KEITA SHOJI](https://appshunter.io/developer/1758998640) |

## What reviewers say

### コレクトサーフアプリ

[App page](https://appshunter.io/ios/app/id6445918217)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lite Foundation | $5.99 | per month |
| 初心者脱却コース | $12.99 | per month |
| 平面でのサーフスケート練習 | $9.99 | one-time |
| 斜面でのサーフスケート練習 | $9.99 | one-time |
| 段ボールトレーニング | $9.99 | one-time |
| 陸で学ぶ”テイクオフマスター” | $69.99 | one-time |
| Surf Start – ビギナープログラム | $249.99 | one-time |


### 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 |


## Frequently asked questions

### Is コレクトサーフアプリ free?

コレクトサーフアプリ is free to download, with in-app purchases available.

### 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.

### Do コレクトサーフアプリ or 筋トレメモ＆RM換算機 have ads?

コレクトサーフアプリ shows ads; 筋トレメモ＆RM換算機 does not.

### Which is updated more often, コレクトサーフアプリ or 筋トレメモ＆RM換算機?

コレクトサーフアプリ ships an update every 2 weeks, and 筋トレメモ＆RM換算機 every 2 months. Most recently, コレクトサーフアプリ was updated on September 23, 2026 and 筋トレメモ＆RM換算機 on September 24, 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.*