# Sight reading vs 音壳

The clearest difference is in-app purchases: Sight reading at none against 音壳's 12. Sight reading also leads on ratings volume (1.3K vs 19). 音壳's advantage is update cadence (fortnightly vs every 128 months) and rating (5.0 vs 4.8). On price, review sentiment and device support there is nothing between them.

Both are free to download. 音壳 sells 11 one-off in-app purchases. Sight reading asks for nothing beyond the download.

音壳 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Sight reading has 1.3K ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 95% of Sight reading's written reviews are positive against 96% of 音壳's.

Sight reading ships an update every 128 months, 音壳 fortnightly. The most recent releases landed on September 26, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Sight reading | 音壳 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (1.3K ratings)](https://appshunter.io/ios/app/sight-reading/id645235760/reviews) | **[5.0 (19 ratings)](https://appshunter.io/ios/app/app/id1209335292/reviews)** |
| Number of ratings | **1.3K** | 19 |
| Positive reviews | 94.7% of reviews | **96.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | Every 128 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 13 MB | 179 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hsin Hsuan Chen](https://appshunter.io/developer/1514533218) | [鑫 孟](https://appshunter.io/developer/1264513934) |

## What reviewers say

### Sight reading

[App page](https://appshunter.io/ios/app/sight-reading/id645235760)

This app helps beginners learn to read sheet music by providing random note exercises. It simulates a keyboard to play the notes, allowing users to practice recognizing musical sounds instantly. Users can customize the number of questions and choose between treble or bass clefs.

**Highlights:** Random note generation, Analog keyboard simulation, Audible note playback, Customizable question count, Treble and bass clef selection

**In-app purchases:** none


### 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 Sight reading free?

Sight reading is free to download, with no in-app purchases.

### Is 音壳 free?

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

### Which has better reviews, Sight reading or 音壳?

音壳 is rated higher. Sight reading averages 4.8 out of 5 from 1.3K ratings, while 音壳 averages 5.0 from 19 ratings.

### Which is updated more often, Sight reading or 音壳?

Sight reading ships an update every 128 months, and 音壳 fortnightly. Most recently, Sight reading was updated on September 26, 2026 and 音壳 on September 27, 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.*