# 音壳 vs ChordOne

The clearest difference is update cadence: 音壳 at fortnightly against ChordOne's every 2 months. 音壳 also leads on review sentiment (96% vs 78%) and iOS requirement (12.0 vs 17.6). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. 音壳 sells 11 one-off in-app purchases and ChordOne sells 8 in-app purchases, starting at $3.99 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 4.8. Both are backed by a comparable volume of ratings — 19 and 22 respectively. Written reviews point the same way: 96% of 音壳's written reviews are positive against 78% of ChordOne's.

音壳 ships an update fortnightly, ChordOne every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | 音壳 | ChordOne |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (19 ratings)](https://appshunter.io/ios/app/app/id1209335292/reviews)** | [4.8 (22 ratings)](https://appshunter.io/ios/app/chordone-chords-toolkit/id1211927482/reviews) |
| Number of ratings | 19 | **22** |
| Positive reviews | **96.4% of reviews** | 78.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 179 MB | 116 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [鑫 孟](https://appshunter.io/developer/1264513934) | [炯龙 吴](https://appshunter.io/developer/596409525) |

## 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 |


### ChordOne

[App page](https://appshunter.io/ios/app/chordone-chords-toolkit/id1211927482)

This professional chord tool app helps musicians, composers, and learners of piano, guitar, and ukulele master chord knowledge and unlock creative inspiration. It offers a vast library of chords and scales, visual learning tools, and realistic sound previews.

**Highlights:** Vast chord and scale library, Multi-dimensional visual learning, Realistic chord/scale listening, Smart chord lookup and reverse lookup, Chord progression creation, Beginner-friendly video courses

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $3.99 | per month |
| 年度会员 | $24.99 | per year |
| 解除数量限制 | $0.99 | one-time |
| 自定义和弦 | $0.99 | one-time |
| 更换乐器 | $0.99 | one-time |
| 钢琴指法 | $3.99 | one-time |
| 去除广告 | $3.99 | one-time |
| 终身使用 | $49.99 | one-time |


## Frequently asked questions

### Is 音壳 free?

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

### Is ChordOne free?

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

### Which has better reviews, 音壳 or ChordOne?

音壳 is rated higher. 音壳 averages 5.0 out of 5 from 19 ratings, while ChordOne averages 4.8 from 22 ratings.

### Do 音壳 or ChordOne have ads?

Neither 音壳 nor ChordOne shows ads.

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

音壳 ships an update fortnightly, and ChordOne every 2 months. Most recently, 音壳 was updated on October 24, 2026 and ChordOne on October 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.*