# 星海弹弹 vs Rheoflow

The clearest difference is in-app purchases: Rheoflow at none against 星海弹弹's 10. Rheoflow also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 星海弹弹 sells 10 in-app purchases, starting at $3.99 per month. Rheoflow asks for nothing beyond the download.

星海弹弹 ships an update monthly, Rheoflow every 2 months. The most recent releases landed on September 7, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | 星海弹弹 | Rheoflow |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 197 MB | 198 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Hsinghai Piano Group Ltd](https://appshunter.io/developer/1515755499) | [深圳走心科技有限公司](https://appshunter.io/developer/1726558173) |

## What reviewers say

### 星海弹弹

[App page](https://appshunter.io/ios/app/id6448904224)

Learn to play piano with personalized sheet music and real-time feedback. Explore a vast song library, practice with various modes, and compete globally with other music enthusiasts. Enjoy a convenient and fun musical journey anytime, anywhere.

**Highlights:** Personalized sheet music, Real-time performance feedback, Extensive song library, Multiple practice modes, Global leaderboards and challenges, Supports 61/88 key keyboards, In-app touch keyboard

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 包月会员 | $3.99 | per month |
| 弹唱连续包月会员 | $4.99 | per month |
| 1个月会员 | $4.99 | one-time |
| 弹唱1个月会员 | $6.99 | one-time |
| 3个月会员 | $14.99 | one-time |
| 弹唱3个月会员 | $19.99 | one-time |
| 6个月会员 | $29.99 | one-time |
| 弹唱6个月会员 | $29.99 | one-time |
| 12个月会员 | $59.99 | one-time |
| 弹唱12个月会员 | $59.99 | one-time |


### Rheoflow

[App page](https://appshunter.io/ios/app/rheoflow/id6476388045)

**In-app purchases:** none


## Frequently asked questions

### Is 星海弹弹 free?

星海弹弹 is free to download, with in-app purchases available.

### Is Rheoflow free?

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

### Do 星海弹弹 or Rheoflow have ads?

星海弹弹 shows ads; Rheoflow does not.

### Which is updated more often, 星海弹弹 or Rheoflow?

星海弹弹 ships an update monthly, and Rheoflow every 2 months. Most recently, 星海弹弹 was updated on September 7, 2026 and Rheoflow on September 18, 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.*