# InstaKeys vs Gradation Piano

The clearest difference is in-app purchases: Gradation Piano at none against InstaKeys's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. InstaKeys sells 3 in-app purchases, starting at $0.99 per 7 days. Gradation Piano asks for nothing beyond the download.

## The numbers

| Metric | InstaKeys | Gradation Piano |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 12 MB | 6 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [东梅 吕](https://appshunter.io/developer/1825051058) | [MASATO MISAWA](https://appshunter.io/developer/1609449895) |

## What reviewers say

### InstaKeys

[App page](https://appshunter.io/ios/app/instakeys-learn-music-notes/id6758503335)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| InstaKeys Weekly Premium | $0.99 | per 7 days |
| InstaKeys Yearly Premium | $9.99 | per year |
| InstaKeys Lifetime | $19.99 | one-time |


### Gradation Piano

[App page](https://appshunter.io/ios/app/gradation-piano/id6778021165)

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

**In-app purchases:** none


## Frequently asked questions

### Is InstaKeys free?

InstaKeys is free to download, with in-app purchases available.

### Is Gradation Piano free?

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

### Do InstaKeys or Gradation Piano have ads?

Neither InstaKeys nor Gradation Piano shows ads.

---

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