# 口袋五线谱 vs 音壳

The clearest difference is ads: 音壳 at none against 口袋五线谱's shown. 音壳 also leads on ratings volume (19 vs 1). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. 口袋五线谱 sells 6 one-off in-app purchases and 音壳 sells 11 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for 口袋五线谱 against 5.0 for 音壳. That said, the two scores are not equally well evidenced: 音壳 has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 100% of 口袋五线谱's written reviews are positive against 96% of 音壳's.

口袋五线谱 ships an update every 3 weeks, 音壳 fortnightly. Both last shipped on October 29, 2026.

## The numbers

| Metric | 口袋五线谱 | 音壳 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/id1157856746/reviews) | [5.0 (19 ratings)](https://appshunter.io/ios/app/app/id1209335292/reviews) |
| Number of ratings | 1 | **19** |
| Positive reviews | **100.0% of reviews** | 96.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 93 MB | 179 MB |
| Requires iOS | 13.4 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [大伟 王](https://appshunter.io/developer/859110591) | [鑫 孟](https://appshunter.io/developer/1264513934) |

## What reviewers say

### 口袋五线谱

[App page](https://appshunter.io/ios/app/id1157856746)

This app helps beginners learn to read sheet music for piano. It offers easy-to-understand lessons, targeted practice exercises, and a notebook to track and correct mistakes. Track your progress with visual statistics.

**Highlights:** Beginner-friendly sheet music lessons, Targeted practice exercises (beginner, intermediate, advanced), Notebook for practicing missed notes, Progress tracking with visual statistics, Customizable practice sessions, User feedback and communication channels

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一个月VIP会员 | $0.99 | one-time |
| 月度会员 | $2.99 | one-time |
| 半年VIP会员 | $2.99 | one-time |
| 一年VIP会员 | $4.99 | one-time |
| 半年会员 | $7.99 | one-time |
| 年度会员 | $14.99 | one-time |


### 音壳

[App page](https://appshunter.io/ios/app/app/id1209335292)

Master music theory, sight-singing, and ear training with comprehensive exercises. This app helps beginners and advanced learners improve their music reading, pitch accuracy, and understanding of intervals, chords, and rhythms. It offers customizable practice and a supportive community for musical growth.

**Highlights:** Music theory lessons and exercises, Sight-singing pitch evaluation, Interval, chord, and scale ear training, Rhythm and melody practice, Customizable practice modes, Pure, realistic instrument sounds, Q&A and community forum

**Features:** Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1金币 | $0.99 | one-time |
| 8乐点 | $0.99 | one-time |
| 1个月 | $0.99 | one-time |
| 18乐点 | $2.99 | one-time |
| 1个月 | $3.99 | one-time |
| 40乐点 | $5.99 | one-time |
| 1个月 | $14.99 | one-time |
| 108乐点 | $15.99 | one-time |
| 3个月音壳VIP会员 | $21.99 | one-time |
| 12个月 | $54.99 | one-time |
| 12个月艺考VIP会员 | $449.99 | one-time |


## Frequently asked questions

### Is 口袋五线谱 free?

口袋五线谱 is free to download, with in-app purchases available.

### Is 音壳 free?

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

### Which has better reviews, 口袋五线谱 or 音壳?

口袋五线谱 and 音壳 are both rated 5.0 out of 5 on the App Store, from 1 and 19 ratings respectively.

### Do 口袋五线谱 or 音壳 have ads?

口袋五线谱 shows ads; 音壳 does not.

### Which is updated more often, 口袋五线谱 or 音壳?

口袋五线谱 ships an update every 3 weeks, and 音壳 fortnightly. Most recently, 口袋五线谱 was updated on October 29, 2026 and 音壳 on October 29, 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.*