# CMP Grand Piano vs Smart Scale Controller Pro

The clearest difference is price: CMP Grand Piano at $14.99 against Smart Scale Controller Pro's $99.99. CMP Grand Piano also leads on rating (4.2 vs 3.4) and review sentiment (78% vs 50%). Smart Scale Controller Pro's advantage is update cadence (every 3 weeks vs every 2 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

CMP Grand Piano costs $14.99 and Smart Scale Controller Pro $99.99 up front. CMP Grand Piano sells 2 one-off in-app purchases and Smart Scale Controller Pro sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

CMP Grand Piano holds the better App Store score, 4.2 against 3.4. Both are backed by a comparable volume of ratings — 15 and 9 respectively. Written reviews point the same way: 78% of CMP Grand Piano's written reviews are positive against 50% of Smart Scale Controller Pro's.

CMP Grand Piano ships an update every 2 months, Smart Scale Controller Pro every 3 weeks. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | CMP Grand Piano | Smart Scale Controller Pro |
| --- | --- | --- |
| Price | **$14.99** | $99.99 |
| Rating | **[4.2 (15 ratings)](https://appshunter.io/ios/app/cmp-grand-piano/id566874816/reviews)** | [3.4 (9 ratings)](https://appshunter.io/ios/app/smart-scale-controller-pro/id1519381658/reviews) |
| Number of ratings | **15** | 9 |
| Positive reviews | **78.2% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 1.7 GB | 97 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christian Schoenebeck d/b/a Crudebyte](https://appshunter.io/developer/428367741) | [9390-0801 Quebec inc](https://appshunter.io/developer/1517759983) |

## What reviewers say

### CMP Grand Piano

[App page](https://appshunter.io/ios/app/cmp-grand-piano/id566874816)

Experience a high-quality virtual grand piano with realistic sound and low latency. Connect an external MIDI keyboard for professional stage use or practice. Record and share your musical creations.

**Highlights:** Realistic grand piano sound with 1.7GB+ samples, Bluetooth LE MIDI, Audio Unit, and Inter-App Audio support, Connect external MIDI keyboards, Low resource consumption for older devices, MIDI player/recorder with export options, Hermode Tuning for brilliant sound, Configurable audio latency

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upright Pianino | $4.99 | one-time |
| Concert Grand Piano | $8.99 | one-time |


### 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 |


## Frequently asked questions

### Is CMP Grand Piano free?

CMP Grand Piano costs $14.99, and also offers in-app purchases.

### Is Smart Scale Controller Pro free?

Smart Scale Controller Pro costs $99.99, and also offers in-app purchases.

### Which has better reviews, CMP Grand Piano or Smart Scale Controller Pro?

CMP Grand Piano is rated higher. CMP Grand Piano averages 4.2 out of 5 from 15 ratings, while Smart Scale Controller Pro averages 3.4 from 9 ratings.

### Do CMP Grand Piano or Smart Scale Controller Pro have ads?

Neither CMP Grand Piano nor Smart Scale Controller Pro shows ads.

### Which is updated more often, CMP Grand Piano or Smart Scale Controller Pro?

CMP Grand Piano ships an update every 2 months, and Smart Scale Controller Pro every 3 weeks. Most recently, CMP Grand Piano was updated on October 15, 2026 and Smart Scale Controller Pro on October 14, 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.*