# MultiTuneKeys vs WindSynth 16

The clearest difference is in-app purchases: WindSynth 16 at none against MultiTuneKeys's 1. MultiTuneKeys's advantage is update cadence (every 9 days vs every 6 weeks) and iOS requirement (17.0 vs 26.4). On price, ads and device support there is nothing between them.

Both are free to download. MultiTuneKeys sells 1 one-off in-app purchase. WindSynth 16 asks for nothing beyond the download.

MultiTuneKeys ships an update every 9 days, WindSynth 16 every 6 weeks. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | MultiTuneKeys | WindSynth 16 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Every 6 weeks |
| Size | 6 MB | 35 MB |
| Requires iOS | **17.0** | 26.4 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yasuhiro Misawa](https://appshunter.io/developer/1892754235) | [Kouki Yoshimoto](https://appshunter.io/developer/1884780659) |

## What reviewers say

### MultiTuneKeys

[App page](https://appshunter.io/ios/app/multitunekeys/id6764493629)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### WindSynth 16

[App page](https://appshunter.io/ios/app/windsynth-16/id6766004505)

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

**In-app purchases:** none


## Frequently asked questions

### Is MultiTuneKeys free?

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

### Is WindSynth 16 free?

WindSynth 16 is free to download, with no in-app purchases.

### Do MultiTuneKeys or WindSynth 16 have ads?

Both MultiTuneKeys and WindSynth 16 show ads.

### Which is updated more often, MultiTuneKeys or WindSynth 16?

MultiTuneKeys ships an update every 9 days, and WindSynth 16 every 6 weeks. Most recently, MultiTuneKeys was updated on September 17, 2026 and WindSynth 16 on September 21, 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.*