# dp SmartController vs PianoNotation

The clearest difference is price: dp SmartController at Free against PianoNotation's $1.99. dp SmartController also leads on device support (3 vs 1). PianoNotation's advantage is update cadence (every 9 days vs every 3 months). On ads, in-app purchases and iOS requirement there is nothing between them.

dp SmartController is free to download; PianoNotation costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

dp SmartController ships an update every 3 months, PianoNotation every 9 days. The most recent releases landed on October 4, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | dp SmartController | PianoNotation |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Size | 36 MB | 38 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Dongguan Benqing Electronic Technology Co., Ltd.](https://appshunter.io/developer/1777016029) | [Alexander Martell](https://appshunter.io/developer/1814274787) |

## What reviewers say

### dp SmartController

[App page](https://appshunter.io/ios/app/dp-smartcontroller/id6738071796)

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

**In-app purchases:** none


### PianoNotation

[App page](https://appshunter.io/ios/app/pianonotation-read-music/id6747049321)

**In-app purchases:** none


## Frequently asked questions

### Is dp SmartController free?

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

### Is PianoNotation free?

PianoNotation costs $1.99, with no in-app purchases.

### Do dp SmartController or PianoNotation have ads?

Neither dp SmartController nor PianoNotation shows ads.

### Which is updated more often, dp SmartController or PianoNotation?

dp SmartController ships an update every 3 months, and PianoNotation every 9 days. Most recently, dp SmartController was updated on October 4, 2026 and PianoNotation on September 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*