# Tuner B2 vs 音乐格式转换器

The clearest difference is review sentiment: Tuner B2 at 86% against 音乐格式转换器's 67%. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Tuner B2 sells 2 in-app purchases, starting at $1.99 per year and 音乐格式转换器 sells 7 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Tuner B2 ships an update every 2 weeks, 音乐格式转换器 every 10 days. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Tuner B2 | 音乐格式转换器 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **85.7% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | Freemium | Freemium |
| Size | 5 MB | 82 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [守群 赵](https://appshunter.io/developer/963658407) | [Huizhou Big Goose Software Co., Ltd.](https://appshunter.io/developer/6776538080) |

## What reviewers say

### Tuner B2

[App page](https://appshunter.io/ios/app/tuner-b2/id6755300645)

This app precisely tunes a wide variety of string and wind instruments using real-time audio analysis. It offers automatic pitch detection, octave display, and support for alternate tunings, making it a versatile tool for musicians.

**Highlights:** Automatic pitch detection, Real-time frequency display, Support for numerous instruments, Alternate tuning options, Semitone tuning, Octave display

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual subscription | $1.99 | per year |
| Lifetime membership | $29.99 | one-time |


### 音乐格式转换器

[App page](https://appshunter.io/ios/app/mp3-and/id6776538078)

This tool converts between all major audio formats and offers comprehensive audio editing features. Easily extract audio from videos, trim, and merge audio clips for various creative and practical uses.

**Highlights:** Multi-format audio conversion, Video to audio extraction, Precise audio trimming, Multi-segment audio merging, Batch editing, Lossless audio output

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周度会员 | $2.99 | per 7 days |
| 月度会员 | $4.99 | per month |
| 季度会员 | $9.99 | per 3 months |
| 年度会员 | $19.99 | per year |
| 月度 | $3.99 | one-time |
| 年度 | $7.99 | one-time |
| 永久会员 | $9.99 | one-time |


## Frequently asked questions

### Is Tuner B2 free?

Tuner B2 is free to download, with in-app purchases available.

### Is 音乐格式转换器 free?

音乐格式转换器 is free to download, with in-app purchases available.

### Do Tuner B2 or 音乐格式转换器 have ads?

Neither Tuner B2 nor 音乐格式转换器 shows ads.

### Which is updated more often, Tuner B2 or 音乐格式转换器?

Tuner B2 ships an update every 2 weeks, and 音乐格式转换器 every 10 days. Most recently, Tuner B2 was updated on November 9, 2026 and 音乐格式转换器 on November 10, 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.*