# OpenLanguage vs Clef

The clearest difference is update cadence: OpenLanguage at daily against Clef's weekly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OpenLanguage ships an update daily, Clef weekly. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | OpenLanguage | Clef |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Size | 34 MB | 13 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [William Schaller](https://appshunter.io/developer/6774796760) | [Antoine Quinzin](https://appshunter.io/developer/6794323139) |

## What reviewers say

### OpenLanguage

[App page](https://appshunter.io/ios/app/openlanguage/id6774796758)

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

**In-app purchases:** none


### Clef

[App page](https://appshunter.io/ios/app/clef-music-theory/id6794323137)

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenLanguage free?

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

### Is Clef free?

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

### Do OpenLanguage or Clef have ads?

Neither OpenLanguage nor Clef shows ads.

### Which is updated more often, OpenLanguage or Clef?

OpenLanguage ships an update daily, and Clef weekly. Most recently, OpenLanguage was updated on October 31, 2026 and Clef on November 10, 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.*