# 快音Kuaiyin vs 全能转换器

The clearest difference is review sentiment: 快音Kuaiyin at 92% against 全能转换器's 20%. 全能转换器's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. 快音Kuaiyin sells 13 in-app purchases, starting at $2.49 per month and 全能转换器 sells 5 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

快音Kuaiyin ships an update weekly, 全能转换器 fortnightly. The most recent releases landed on October 19, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 快音Kuaiyin | 全能转换器 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (821 ratings)](https://appshunter.io/ios/app/kuaiyin/id1493374755/reviews)** | — |
| Number of ratings | **821** | — |
| Positive reviews | **91.8% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Freemium | Free with in-app purchases |
| Size | 140 MB | 13 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [成都开心音符科技有限公司](https://appshunter.io/developer/1493374754) | [兴堂 朱](https://appshunter.io/developer/1665563211) |

## What reviewers say

### 快音Kuaiyin

[App page](https://appshunter.io/ios/app/kuaiyin/id1493374755)

Access a vast library of free music, including popular ringtones and viral hits from short video platforms. Easily extract audio from videos, create custom ringtones, and even record and upload your own original music.

**Highlights:** Free music listening, Extract audio from videos, Create custom ringtones, Record and upload original music, Extensive ringtone categorization, Share ringtones with friends

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP member monthly | $2.49 | per month |
| VIP Membership - Seasonal | $4.49 | per 3 months |
| 快音写歌基础版会员 | $6.99 | per month |
| 快音写歌专业版会员 | $11.99 | per month |
| Member 7 days | $0.99 | one-time |
| 30 days of membership | $2.99 | one-time |
| 180个音符充值 | $2.99 | one-time |
| 360个音符充值 | $4.99 | one-time |
| 580个音符充值 | $6.99 | one-time |
| 90 days members | $8.99 | one-time |
| 680个音符充值 | $9.99 | one-time |
| 1280个音符充值 | $19.99 | one-time |
| 2580个音符充值 | $39.99 | one-time |

**What reviewers like**

- 👍 Good music selection
- 🎶 Enjoyable listening experience
- 🔍 Able to find desired songs
- 🌐 Accessible for overseas users

**What reviewers complain about**

- 📢 Too many advertisements
- 🔍 Limited search functionality
- 🔇 Some songs not available
- 🔋 High battery consumption

**Reported bugs**

- Login/sign-in issues
- Frequent app crashes
- Compatibility problems on newer devices

**Requested features**

- More original song versions
- Improved search capabilities
- Reduce advertisement frequency


### 全能转换器

[App page](https://appshunter.io/ios/app/id6448617599)

This app transforms paper documents into digital files with smart scanning, text extraction, and handwriting removal from test papers. It also converts between PDF, Word, and TXT formats, and offers cloud storage for easy access.

**Highlights:** Smart document scanning, Extract text from images, Remove handwriting from test papers, PDF, Word, TXT format conversion, Cloud document storage

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| sm_week | $9.99 | per 7 days |
| sm_month | $17.99 | per month |
| sm_quarter | $49.99 | per 3 months |
| sm_sixmonth | $69.99 | per 6 months |
| 解锁单次使用 | $0.99 | one-time |


## Frequently asked questions

### Is 快音Kuaiyin free?

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

### Is 全能转换器 free?

全能转换器 is free to download, with in-app purchases available.

### Do 快音Kuaiyin or 全能转换器 have ads?

快音Kuaiyin shows ads; 全能转换器 does not.

### Which is updated more often, 快音Kuaiyin or 全能转换器?

快音Kuaiyin ships an update weekly, and 全能转换器 fortnightly. Most recently, 快音Kuaiyin was updated on October 19, 2026 and 全能转换器 on October 21, 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.*