# PianoFlow vs Harmony Ring

The clearest difference is in-app purchases: PianoFlow at none against Harmony Ring's 1. PianoFlow also leads on update cadence (daily vs every 11 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Harmony Ring sells 1 one-off in-app purchase. PianoFlow asks for nothing beyond the download.

PianoFlow ships an update daily, Harmony Ring every 11 days. The most recent releases landed on October 14, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | PianoFlow | Harmony Ring |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 11 days |
| Size | 21 MB | 75 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Banghua Zhao](https://appshunter.io/developer/1288052561) | [EMIN POLAT TURKYILMAZ](https://appshunter.io/developer/1875890442) |

## What reviewers say

### PianoFlow

[App page](https://appshunter.io/ios/app/pianoflow-keyboard/id6752531110)

**Features:** macOS Compatibility

**In-app purchases:** none


### Harmony Ring

[App page](https://appshunter.io/ios/app/harmony-ring/id6758943487)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all locked instruments | $1.99 | one-time |


## Frequently asked questions

### Is PianoFlow free?

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

### Is Harmony Ring free?

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

### Do PianoFlow or Harmony Ring have ads?

Both PianoFlow and Harmony Ring show ads.

### Which is updated more often, PianoFlow or Harmony Ring?

PianoFlow ships an update daily, and Harmony Ring every 11 days. Most recently, PianoFlow was updated on October 14, 2026 and Harmony Ring on October 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.*