# Cotracks vs 开嗓练习

The clearest difference is price: 开嗓练习 at Free against Cotracks's $29.99. 开嗓练习 also leads on update cadence (every 5 weeks vs every 6 months) and rating (5.0 vs 4.7). Cotracks's advantage is in-app purchases (none vs 7). On ratings volume, ads and iOS requirement there is nothing between them.

开嗓练习 is free to download; Cotracks costs $29.99 up front. 开嗓练习 sells 7 one-off in-app purchases. Cotracks asks for nothing beyond the download.

开嗓练习 holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 86% of Cotracks's written reviews are positive against 100% of 开嗓练习's.

Cotracks ships an update every 6 months, 开嗓练习 every 5 weeks. The most recent releases landed on June 5, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Cotracks | 开嗓练习 |
| --- | --- | --- |
| Price | $29.99 | **Free** |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/cotracks/id541037304/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id1305653640/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 45 MB | 29 MB |
| Requires iOS | 12.0 | **11.1** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Futucraft Oy](https://appshunter.io/developer/541037307) | [卉璇 何](https://appshunter.io/developer/980249867) |

## What reviewers say

### Cotracks

[App page](https://appshunter.io/ios/app/cotracks/id541037304)

Create music collaboratively on a single iPad with a multitrack sequencer. Record and play back your own parts in sync with others, building complex tracks with various instruments and effects. Designed to maintain creative flow for solo or group sessions.

**Highlights:** Multitrack sequencer with up to 12 instrument tracks, Beat synchronized playback and recording, Dedicated interface modes for 1, 2, or 4 users, Polyphonic and monophonic synthesizers with quality presets, Sample player with professional library, Stereo delay, phaser, and equalizer effects, Audiobus support and audio export options

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Cotracks free?

Cotracks costs $29.99, with no in-app purchases.

### Is 开嗓练习 free?

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

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

开嗓练习 is rated higher. Cotracks averages 4.7 out of 5 from 3 ratings, while 开嗓练习 averages 5.0 from 3 ratings.

### Do Cotracks or 开嗓练习 have ads?

Neither Cotracks nor 开嗓练习 shows ads.

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

Cotracks ships an update every 6 months, and 开嗓练习 every 5 weeks. Most recently, Cotracks was updated on June 5, 2026 and 开嗓练习 on October 16, 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.*