# 毅起练 vs MuscleFlip

The clearest difference is in-app purchases: MuscleFlip at none against 毅起练's 5. MuscleFlip also leads on update cadence (every 3 weeks vs every 5 months) and device support. 毅起练's advantage is iOS requirement (12.4 vs 17.6). On price there is nothing between them.

Both are free to download. 毅起练 sells 5 one-off in-app purchases. MuscleFlip asks for nothing beyond the download.

毅起练 ships an update every 5 months, MuscleFlip every 3 weeks. The most recent releases landed on September 8, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | 毅起练 | MuscleFlip |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Size | 71 MB | 9 MB |
| Requires iOS | **12.4** | 17.6 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [毅成 谈](https://appshunter.io/developer/1627990453) | [Kiichi Takazakura](https://appshunter.io/developer/1896767004) |

## What reviewers say

### 毅起练

[App page](https://appshunter.io/ios/app/id6476649738)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1天会员 | $0.99 | one-time |
| 月卡会员 | $4.99 | one-time |
| 终身会员-限时促销 | $12.99 | one-time |
| 年卡会员 | $29.99 | one-time |
| 终身会员 | $59.99 | one-time |


### MuscleFlip

[App page](https://appshunter.io/ios/app/muscleflip/id6770926014)

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

**In-app purchases:** none


## Frequently asked questions

### Is 毅起练 free?

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

### Is MuscleFlip free?

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

### Which is updated more often, 毅起练 or MuscleFlip?

毅起练 ships an update every 5 months, and MuscleFlip every 3 weeks. Most recently, 毅起练 was updated on September 8, 2026 and MuscleFlip on September 19, 2026.

---

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