# つみ筋 vs POWER

The clearest difference is in-app purchases: つみ筋 at none against POWER's 8. つみ筋 also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. POWER sells 8 in-app purchases, starting at $2.99 per month. つみ筋 asks for nothing beyond the download.

つみ筋 ships an update every 4 days, POWER every 5 days. The most recent releases landed on October 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | つみ筋 | POWER |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | — | Free with in-app purchases |
| Size | 79 MB | 25 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yuta Yoshinaga](https://appshunter.io/developer/1868048345) | [YOTATIS MANGNIMIT](https://appshunter.io/developer/6776593750) |

## What reviewers say

### つみ筋

[App page](https://appshunter.io/ios/app/rpg/id6757642776)

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

**In-app purchases:** none


### POWER

[App page](https://appshunter.io/ios/app/power-workout-log-and-level-up/id6776593748)

Transform your gym sessions into a rewarding experience. Log workouts, earn experience points, level up, and unlock achievements. Track your progress with detailed analytics and visual representations of your strength development.

**Highlights:** Log workouts in three taps, Gamified leveling system with EXP and titles, Detailed progress and growth analysis, Muscle map visualization, Personal record history, Shareable workout summaries

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| チャレンジ | $2.99 | per month |
| プレミアム | $5.99 | per month |
| プロ | $9.99 | per month |
| MAX | $11.99 | per month |
| チャレンジ | $22.99 | per year |
| プレミアム | $49.99 | per year |
| プロ | $69.99 | per year |
| MAX | $99.99 | per year |


## Frequently asked questions

### Is つみ筋 free?

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

### Is POWER free?

POWER is free to download, with in-app purchases available.

### Do つみ筋 or POWER have ads?

Both つみ筋 and POWER show ads.

### Which is updated more often, つみ筋 or POWER?

つみ筋 ships an update every 4 days, and POWER every 5 days. Most recently, つみ筋 was updated on October 6, 2026 and POWER on October 31, 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.*