# hêrtz vs 钢琴巴士

The clearest difference is review sentiment: 钢琴巴士 at 44% against hêrtz's 0%. hêrtz's advantage is rating (3.0 vs 1.0) and in-app purchases (none vs 10). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 钢琴巴士 sells 10 one-off in-app purchases. hêrtz asks for nothing beyond the download.

hêrtz holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews complicate that: 0% of hêrtz's written reviews are positive against 44% of 钢琴巴士's, so the app with the better star average is not the one people write more warmly about.

hêrtz ships an update weekly, 钢琴巴士 every 2 weeks. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | hêrtz | 钢琴巴士 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/hertz/id1453959660/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/id1607244680/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 0.0% of reviews | **44.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Free | — |
| Size | 10 MB | 103 MB |
| Requires iOS | 12.1 | **12** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cameron Krischel](https://appshunter.io/developer/1453959659) | [Shanghai Music Publishing House Co., Ltd.](https://appshunter.io/developer/651417370) |

## What reviewers say

### hêrtz

[App page](https://appshunter.io/ios/app/hertz/id1453959660)

This simple pitch pipe app offers a four-octave range for musicians. It's designed for ease of use, inspired by the needs of vocal performance students. Feedback is welcomed through various developer channels.

**Highlights:** Four octave range, Simple pitch pipe functionality, Designed for musicians, Feedback channels available

**Features:** macOS Compatibility

**In-app purchases:** none


### 钢琴巴士

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

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

**In-app purchases (10)**

| 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（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 |


## Frequently asked questions

### Is hêrtz free?

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

### Is 钢琴巴士 free?

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

### Which has better reviews, hêrtz or 钢琴巴士?

hêrtz is rated higher. hêrtz averages 3.0 out of 5 from 4 ratings, while 钢琴巴士 averages 1.0 from 1 ratings.

### Do hêrtz or 钢琴巴士 have ads?

Neither hêrtz nor 钢琴巴士 shows ads.

### Which is updated more often, hêrtz or 钢琴巴士?

hêrtz ships an update weekly, and 钢琴巴士 every 2 weeks. Most recently, hêrtz was updated on October 29, 2026 and 钢琴巴士 on November 3, 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.*