# 音壳 vs Teach Note

The clearest difference is ads: 音壳 at none against Teach Note's shown. 音壳 also leads on rating (5.0 vs 4.7) and update cadence (fortnightly vs every 5 weeks). Teach Note's advantage is ratings volume (196 vs 19). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. 音壳 sells 11 one-off in-app purchases and Teach Note sells 10 in-app purchases, starting at $2.99 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 4.7. That said, the two scores are not equally well evidenced: Teach Note has 196 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 96% of 音壳's written reviews are positive against 90% of Teach Note's.

音壳 ships an update fortnightly, Teach Note every 5 weeks. Both last shipped on September 23, 2026.

## The numbers

| Metric | 音壳 | Teach Note |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (19 ratings)](https://appshunter.io/ios/app/app/id1209335292/reviews)** | [4.7 (196 ratings)](https://appshunter.io/ios/app/teach-note-sight-reading/id1303295012/reviews) |
| Number of ratings | 19 | **196** |
| Positive reviews | **96.4% of reviews** | 90.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 179 MB | 213 MB |
| Requires iOS | **12.0** | 18.6 |
| 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 |


### Teach Note

[App page](https://appshunter.io/ios/app/teach-note-sight-reading/id1303295012)

Enhance your musical abilities with this app designed to improve staff notation reading and music theory knowledge. It offers structured courses, extensive practice exercises, and helpful tools to boost your sight-reading speed and understanding of musical concepts.

**Highlights:** 30+ sight-reading and music theory courses, 400+ sight-reading exercises, Intelligent error-correction practice, Multiple practice modes (built-in piano, MIDI/Bluetooth), Support for multiple clefs, Includes common musical tools (metronome, chord lookup)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $2.99 | per month |
| 季度会员 | $9.99 | per 3 months |
| 年度会员 | $22.99 | per year |
| 高级识谱训练包2 | $0.99 | one-time |
| 初级识谱训练包 | $0.99 | one-time |
| 练耳训练包 | $1.99 | one-time |
| 音符识谱训练包 | $1.99 | one-time |
| 高级识谱训练包 | $2.99 | one-time |
| 去除广告 | $3.99 | one-time |
| 终身会员 | $39.99 | one-time |

**What reviewers like**

- 👍 User-friendly interface, easy to learn
- 📚 Comprehensive and well-structured curriculum
- 🎯 Effective for beginners and self-learners
- ✅ Clear and simple explanations
- 🔄 Unlimited practice exercises

**What reviewers complain about**

- 💵 Paywall for premium content
- 🔊 Video tutorials lack audio on some devices
- 📺 Limited free content before requiring subscription
- 🎯 Requires 5-star review to unlock some features
- 📱 Occasional app crashes and stability issues

**Reported bugs**

- App crashes when accessing membership/subscription features
- Video tutorials have no sound on iPad
- Bluetooth MIDI connection not working despite pairing
- VIP recovery/restore purchase causes crashes
- App crashes after recent updates

**Requested features**

- More free practice content
- Ad-supported free tier alternative
- Wider keyboard interface
- Bluetooth MIDI connectivity improvements
- Additional features and functionality


## Frequently asked questions

### Is 音壳 free?

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

### Is Teach Note free?

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

### Which has better reviews, 音壳 or Teach Note?

音壳 is rated higher. 音壳 averages 5.0 out of 5 from 19 ratings, while Teach Note averages 4.7 from 196 ratings.

### Do 音壳 or Teach Note have ads?

Teach Note shows ads; 音壳 does not.

### Which is updated more often, 音壳 or Teach Note?

音壳 ships an update fortnightly, and Teach Note every 5 weeks. Most recently, 音壳 was updated on September 23, 2026 and Teach Note on September 23, 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.*