# 音壳 vs 乐音

音壳 and 乐音 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 音壳 sells 11 one-off in-app purchases and 乐音 sells 10 in-app purchases, starting at $3.49 per month. Whichever you choose, the download price is not the number that matters.

音壳 ships an update fortnightly, 乐音 every 2 weeks. The most recent releases landed on October 21, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 音壳 | 乐音 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (19 ratings)](https://appshunter.io/ios/app/app/id1209335292/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 96.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 179 MB | 94 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [鑫 孟](https://appshunter.io/developer/1264513934) | [河北编钟教育科技有限公司](https://appshunter.io/developer/1734145020) |

## 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 |


### 乐音

[App page](https://appshunter.io/ios/app/id1544915705)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月 | $3.49 | per month |
| 40乐币 | $7.99 | one-time |
| 78乐币 | $14.99 | one-time |
| 118乐币 | $21.99 | one-time |
| 158乐币 | $29.99 | one-time |
| 238乐币 | $46.99 | one-time |
| 三个月会员 | $49.99 | one-time |
| 390乐币 | $74.99 | one-time |
| 半年会员 | $99.99 | one-time |
| 年卡 | $149.99 | one-time |


## Frequently asked questions

### Is 音壳 free?

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

### Is 乐音 free?

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

### Do 音壳 or 乐音 have ads?

Neither 音壳 nor 乐音 shows ads.

### Which is updated more often, 音壳 or 乐音?

音壳 ships an update fortnightly, and 乐音 every 2 weeks. Most recently, 音壳 was updated on October 21, 2026 and 乐音 on October 15, 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.*