# 开嗓练习 vs ChordGen

The clearest difference is in-app purchases: ChordGen at none against 开嗓练习's 7. 开嗓练习's advantage is update cadence (every 2 months vs every 12 months) and ratings volume (3 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. 开嗓练习 sells 7 one-off in-app purchases. ChordGen asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for 开嗓练习 against 5.0 for ChordGen. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

开嗓练习 ships an update every 2 months, ChordGen every 12 months. The most recent releases landed on October 29, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | 开嗓练习 | ChordGen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/id1305653640/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/chordgen/id1552497598/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 29 MB | 24 MB |
| Requires iOS | **13** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [卉璇 何](https://appshunter.io/developer/980249867) | [Gustavo Sore](https://appshunter.io/developer/929233592) |

## What reviewers say

### 开嗓练习

[App page](https://appshunter.io/ios/app/id1305653640)

This app provides structured vocal training exercises to improve singing technique. It offers personalized practice plans, real-time feedback on pitch and breath control, and aims to enhance vocal stability, tone, and range over a 15-day program.

**Highlights:** Personalized vocal training plans, Real-time pitch and breath control feedback, Dynamic scale visualization, Guided vocal exercises, 15-day singing improvement program, Addresses common vocal issues

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁练声工具 | $0.99 | one-time |
| 解锁节拍器工具 | $0.99 | one-time |
| 移除广告 | $0.99 | one-time |
| 多轨道录音工具 | $0.99 | one-time |
| 打包解锁所有的工具及移除广告 | $1.99 | one-time |
| 《每日练声计划》优惠版 | $19.99 | one-time |
| 《每日练声计划》 | $25.99 | one-time |


### ChordGen

[App page](https://appshunter.io/ios/app/chordgen/id1552497598)

Generate chords for any stringed instrument with custom tunings. This universal chord dictionary is ideal for beginners, songwriters, and musicians seeking new sounds. Easily search for specific chords and explore variations.

**Highlights:** Generate any chord, Select any instrument, Choose any tuning, Generate chords with bass notes, Text search system, Universal chord dictionary

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

**In-app purchases:** none


## Frequently asked questions

### Is 开嗓练习 free?

开嗓练习 is free to download, with in-app purchases available.

### Is ChordGen free?

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

### Which has better reviews, 开嗓练习 or ChordGen?

开嗓练习 and ChordGen are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do 开嗓练习 or ChordGen have ads?

Neither 开嗓练习 nor ChordGen shows ads.

### Which is updated more often, 开嗓练习 or ChordGen?

开嗓练习 ships an update every 2 months, and ChordGen every 12 months. Most recently, 开嗓练习 was updated on October 29, 2026 and ChordGen on October 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.*