# 音壳 vs 乐理手册

The clearest difference is rating: 音壳 at 5.0 against 乐理手册's 3.9. 音壳 also leads on review sentiment (96% vs 66%) and iOS requirement (12.0 vs 14.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. 音壳 sells 11 one-off in-app purchases and 乐理手册 sells 4 in-app purchases, starting at $2.49 per month. Whichever you choose, the download price is not the number that matters.

音壳 holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 19 and 15 respectively. Written reviews point the same way: 96% of 音壳's written reviews are positive against 66% of 乐理手册's.

音壳 ships an update fortnightly, 乐理手册 every 2 weeks. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | 音壳 | 乐理手册 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (19 ratings)](https://appshunter.io/ios/app/app/id1209335292/reviews)** | [3.9 (15 ratings)](https://appshunter.io/ios/app/id1572795413/reviews) |
| Number of ratings | **19** | 15 |
| Positive reviews | **96.4% of reviews** | 65.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 179 MB | 328 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [鑫 孟](https://appshunter.io/developer/1264513934) | [Beijing Laiyin Innovation Technology Co., Ltd.](https://appshunter.io/developer/6810118949) |

## What reviewers say

### 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 |


### 乐理手册

[App page](https://appshunter.io/ios/app/id1572795413)

This app helps music enthusiasts learn music theory, practice sight-singing, and ear training. It offers a comprehensive question bank with art exam simulations and integrated ear training exercises to improve listening and vocal skills.

**Highlights:** Music theory question bank, Art exam simulations, Integrated sight-singing and ear training, Music theory dictionary, Sheet music practice with virtual keyboard

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 乐理手册-月会员 | $2.49 | per month |
| 乐理手册-季会员 | $5.99 | per 3 months |
| 乐理手册-年会员 | $9.99 | per year |
| 终身会员 | $2.99 | one-time |


## Frequently asked questions

### Is 音壳 free?

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

### Is 乐理手册 free?

乐理手册 is free to download, with in-app purchases available.

### Which has better reviews, 音壳 or 乐理手册?

音壳 is rated higher. 音壳 averages 5.0 out of 5 from 19 ratings, while 乐理手册 averages 3.9 from 15 ratings.

### Do 音壳 or 乐理手册 have ads?

Neither 音壳 nor 乐理手册 shows ads.

### Which is updated more often, 音壳 or 乐理手册?

音壳 ships an update fortnightly, and 乐理手册 every 2 weeks. Most recently, 音壳 was updated on September 23, 2026 and 乐理手册 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.*