# Smart Scale Controller Pro vs 钢琴巴士

The clearest difference is price: 钢琴巴士 at Free against Smart Scale Controller Pro's $99.99. 钢琴巴士 also leads on iOS requirement (12 vs 15.6). Smart Scale Controller Pro's advantage is rating (3.4 vs 1.0) and ratings volume (9 vs 1). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

钢琴巴士 is free to download; Smart Scale Controller Pro costs $99.99 up front. Smart Scale Controller Pro sells 3 one-off in-app purchases and 钢琴巴士 sells 13 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Smart Scale Controller Pro holds the better App Store score, 3.4 against 1.0. That said, the two scores are not equally well evidenced: Smart Scale Controller Pro has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Smart Scale Controller Pro's written reviews are positive against 44% of 钢琴巴士's.

Smart Scale Controller Pro ships an update every 3 weeks, 钢琴巴士 every 2 weeks. The most recent releases landed on September 8, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Smart Scale Controller Pro | 钢琴巴士 |
| --- | --- | --- |
| Price | $99.99 | **Free** |
| Rating | **[3.4 (9 ratings)](https://appshunter.io/ios/app/smart-scale-controller-pro/id1519381658/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/id1607244680/reviews) |
| Number of ratings | **9** | 1 |
| Positive reviews | **50.0% of reviews** | 44.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 97 MB | 103 MB |
| Requires iOS | 15.6 | **12** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [9390-0801 Quebec inc](https://appshunter.io/developer/1517759983) | [Shanghai Music Publishing House Co., Ltd.](https://appshunter.io/developer/651417370) |

## What reviewers say

### Smart Scale Controller Pro

[App page](https://appshunter.io/ios/app/smart-scale-controller-pro/id1519381658)

Control keyboard scale and tuning in real-time. Offers seamless control over musical parameters for musicians, unlocking new creative possibilities. Perfect for live performances or studio sessions.

**Highlights:** Real-time scale tuning, Transpose, Pitch bend, Preset management, Bank select, OTG and BLE connectivity

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Virtual MIDI Devices | $4.99 | one-time |
| Unlimited Preset Banks | $4.99 | one-time |
| Plugin Mode — AUv3 Instruments | $30.00 | one-time |


### 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 |


## Frequently asked questions

### Is Smart Scale Controller Pro free?

Smart Scale Controller Pro costs $99.99, and also offers 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, Smart Scale Controller Pro or 钢琴巴士?

Smart Scale Controller Pro is rated higher. Smart Scale Controller Pro averages 3.4 out of 5 from 9 ratings, while 钢琴巴士 averages 1.0 from 1 ratings.

### Do Smart Scale Controller Pro or 钢琴巴士 have ads?

Neither Smart Scale Controller Pro nor 钢琴巴士 shows ads.

### Which is updated more often, Smart Scale Controller Pro or 钢琴巴士?

Smart Scale Controller Pro ships an update every 3 weeks, and 钢琴巴士 every 2 weeks. Most recently, Smart Scale Controller Pro was updated on September 8, 2026 and 钢琴巴士 on September 19, 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.*