# Synesthesia vs 音壳

The clearest difference is review sentiment: 音壳 at 96% against Synesthesia's 38%. 音壳 also leads on rating (5.0 vs 2.3). Synesthesia's advantage is in-app purchases (none vs 12) and iOS requirement (8.0 vs 12.0). 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. Synesthesia asks for nothing beyond the download.

音壳 holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 16 and 19 respectively. Written reviews point the same way: 38% of Synesthesia's written reviews are positive against 96% of 音壳's.

Synesthesia ships an update monthly, 音壳 fortnightly. The most recent releases landed on June 1, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Synesthesia | 音壳 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (16 ratings)](https://appshunter.io/ios/app/synesthesia-music-visualizer/id1046438840/reviews) | **[5.0 (19 ratings)](https://appshunter.io/ios/app/app/id1209335292/reviews)** |
| Number of ratings | 16 | **19** |
| Positive reviews | 37.5% of reviews | **96.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 179 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christian Auzinger](https://appshunter.io/developer/918405870) | [鑫 孟](https://appshunter.io/developer/1264513934) |

## What reviewers say

### Synesthesia

[App page](https://appshunter.io/ios/app/synesthesia-music-visualizer/id1046438840)

Experience music through a spectrum of colors, mimicking the sensory phenomenon of synesthesia. Use it as a dynamic mood light, a calming night light, or to visualize the pitches of songs and instruments.

**Highlights:** Music visualization, Mood lighting, Night light functionality, Pitch to color mapping, Microphone access for real-time audio

**Features:** macOS Compatibility

**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 Synesthesia free?

Synesthesia 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, Synesthesia or 音壳?

音壳 is rated higher. Synesthesia averages 2.3 out of 5 from 16 ratings, while 音壳 averages 5.0 from 19 ratings.

### Do Synesthesia or 音壳 have ads?

Neither Synesthesia nor 音壳 shows ads.

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

Synesthesia ships an update monthly, and 音壳 fortnightly. Most recently, Synesthesia was updated on June 1, 2026 and 音壳 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.*