# 乐理手册 vs 来音调音器

The clearest difference is rating: 来音调音器 at 4.8 against 乐理手册's 3.9. 来音调音器 also leads on in-app purchases (none vs 5) and review sentiment (81% vs 64%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. 乐理手册 sells 5 in-app purchases, starting at $5.99 per month. 来音调音器 asks for nothing beyond the download.

来音调音器 holds the better App Store score, 4.8 against 3.9. Both are backed by a comparable volume of ratings — 15 and 19 respectively. Written reviews point the same way: 64% of 乐理手册's written reviews are positive against 81% of 来音调音器's.

乐理手册 ships an update every 2 weeks, 来音调音器 weekly. Both last shipped on October 30, 2026.

## The numbers

| Metric | 乐理手册 | 来音调音器 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (15 ratings)](https://appshunter.io/ios/app/id1572795413/reviews) | **[4.8 (19 ratings)](https://appshunter.io/ios/app/id1591009504/reviews)** |
| Number of ratings | 15 | **19** |
| Positive reviews | 64.1% of reviews | **80.8% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 312 MB | 71 MB |
| Requires iOS | 14.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Laiyin Innovation Technology Co., Ltd.](https://appshunter.io/developer/6810118949) | [北京夕航科技有限公司](https://appshunter.io/developer/1434501557) |

## What reviewers say

### 乐理手册

[App page](https://appshunter.io/ios/app/id1572795413)

This app helps music enthusiasts learn music theory, practice sight-singing, and ear training. It offers a comprehensive question bank with art exam simulations and integrated ear training exercises to improve listening and vocal skills.

**Highlights:** Music theory question bank, Art exam simulations, Integrated sight-singing and ear training, Music theory dictionary, Sheet music practice with virtual keyboard

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 乐理手册-月会员 | $5.99 | per month |
| 乐理手册-季会员 | $5.99 | per 3 months |
| 乐理手册-年会员 | $17.99 | per year |
| 终身会员 | $2.99 | one-time |
| 1个月会员 | $7.99 | one-time |


### 来音调音器

[App page](https://appshunter.io/ios/app/id1591009504)

A professional-grade tuning device for all instruments, offering more precise and efficient adjustments than physical tuners. It features fast and accurate sound recognition with a realistic, user-friendly interface for a more immersive experience.

**Highlights:** Professional-grade tuning, Precise and efficient adjustments, Fast and accurate sound recognition, Supports all instruments, Realistic and user-friendly interface, Manual and automatic tuning modes

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

**In-app purchases:** none


## Frequently asked questions

### Is 乐理手册 free?

乐理手册 is free to download, with in-app purchases available.

### Is 来音调音器 free?

来音调音器 is free to download, with no in-app purchases.

### Which has better reviews, 乐理手册 or 来音调音器?

来音调音器 is rated higher. 乐理手册 averages 3.9 out of 5 from 15 ratings, while 来音调音器 averages 4.8 from 19 ratings.

### Do 乐理手册 or 来音调音器 have ads?

Neither 乐理手册 nor 来音调音器 shows ads.

### Which is updated more often, 乐理手册 or 来音调音器?

乐理手册 ships an update every 2 weeks, and 来音调音器 weekly. Most recently, 乐理手册 was updated on October 30, 2026 and 来音调音器 on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*