# 钢琴巴士 vs Trinity | Audio Mastering

The clearest difference is price: 钢琴巴士 at Free against Trinity | Audio Mastering's $19.99. 钢琴巴士 also leads on iOS requirement (12 vs 15.2). Trinity | Audio Mastering's advantage is rating (4.3 vs 1.0) and in-app purchases (none vs 13). On ads and device support there is nothing between them.

钢琴巴士 is free to download; Trinity | Audio Mastering costs $19.99 up front. 钢琴巴士 sells 13 one-off in-app purchases. Trinity | Audio Mastering asks for nothing beyond the download.

Trinity | Audio Mastering holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Trinity | Audio Mastering has 14 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 44% of 钢琴巴士's written reviews are positive against 73% of Trinity | Audio Mastering's.

钢琴巴士 ships an update every 2 weeks, Trinity | Audio Mastering weekly. The most recent releases landed on September 19, 2026 and August 28, 2026 respectively.

## The numbers

| Metric | 钢琴巴士 | Trinity | Audio Mastering |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/id1607244680/reviews) | **[4.3 (14 ratings)](https://appshunter.io/ios/app/trinity-audio-mastering/id6444727870/reviews)** |
| Number of ratings | 1 | **14** |
| Positive reviews | 44.4% of reviews | **73.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | — | Paid |
| Size | 103 MB | 3 MB |
| Requires iOS | **12** | 15.2 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Music Publishing House Co., Ltd.](https://appshunter.io/developer/651417370) | [Alexander Ewering](https://appshunter.io/developer/1743777532) |

## What reviewers say

### 钢琴巴士

[App page](https://appshunter.io/ios/app/id1607244680)

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ABRSM英皇考级精选录播课（二级）-vip专属 | $4.99 | one-time |
| ABRSM英皇考级精选录播课（七级）-vip专属 | $6.99 | one-time |
| ABRSM英皇考级精选录播课（六级）-vip专属 | $6.99 | one-time |
| ABRSM英皇考级精选录播课（七级） | $7.99 | one-time |
| ABRSM英皇考级精选录播课（一级）-vip专属 | $7.99 | one-time |
| ABRSM英皇考级精选录播课（初级）-vip专属 | $9.99 | one-time |
| ABRSM英皇考级精选录播课（三级）-vip专属 | $9.99 | one-time |
| ABRSM英皇考级精选录播课（四级）-vip专属 | $9.99 | one-time |
| ABRSM英皇考级精选录播课（八级）-vip专属 | $9.99 | one-time |
| ABRSM英皇考级精选录播课（五级）-vip专属 | $12.99 | one-time |
| 钢琴巴士月卡会员 | $12.99 | one-time |
| 全年陪练卡 | $99.99 | one-time |
| 优惠年卡会员 | $149.99 | one-time |


### Trinity | Audio Mastering

[App page](https://appshunter.io/ios/app/trinity-audio-mastering/id6444727870)

This app offers an integrated audio mastering solution for music producers. It features reference-based mastering, advanced spectrum analysis, equalization, and multiband dynamics processing to achieve desired sound and loudness. Supports various audio formats and sample rates.

**Highlights:** Reference-based mastering workflow, Flexible spectrum analyzer, 3-band multiband dynamics, Transparent equalization tools, Realtime normalizers with analog saturation, Three-band stereo width control

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 钢琴巴士 free?

钢琴巴士 is free to download, with in-app purchases available.

### Is Trinity | Audio Mastering free?

Trinity | Audio Mastering costs $19.99, with no in-app purchases.

### Which has better reviews, 钢琴巴士 or Trinity | Audio Mastering?

Trinity | Audio Mastering is rated higher. 钢琴巴士 averages 1.0 out of 5 from 1 ratings, while Trinity | Audio Mastering averages 4.3 from 14 ratings.

### Do 钢琴巴士 or Trinity | Audio Mastering have ads?

Neither 钢琴巴士 nor Trinity | Audio Mastering shows ads.

### Which is updated more often, 钢琴巴士 or Trinity | Audio Mastering?

钢琴巴士 ships an update every 2 weeks, and Trinity | Audio Mastering weekly. Most recently, 钢琴巴士 was updated on September 19, 2026 and Trinity | Audio Mastering on August 28, 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.*