# ClockLesson vs AIR by EBI

The clearest difference is in-app purchases: AIR by EBI at none against ClockLesson's 1. AIR by EBI also leads on update cadence (every 5 days vs every 5 months). ClockLesson's advantage is iOS requirement (15.0 vs 18.2). On price, ads and device support there is nothing between them.

Both are free to download. ClockLesson sells 1 one-off in-app purchase. AIR by EBI asks for nothing beyond the download.

ClockLesson ships an update every 5 months, AIR by EBI every 5 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | ClockLesson | AIR by EBI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Size | 83 MB | 24 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HappyCode Lab](https://appshunter.io/developer/6793409707) | [EB Innovations](https://appshunter.io/developer/1894824466) |

## What reviewers say

### ClockLesson

[App page](https://appshunter.io/ios/app/clocklesson-learn-by-touch/id1640611945)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all quiz stages. | $2.99 | one-time |


### AIR by EBI

[App page](https://appshunter.io/ios/app/air-by-ebi/id6762609003)

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

**In-app purchases:** none


## Frequently asked questions

### Is ClockLesson free?

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

### Is AIR by EBI free?

AIR by EBI is free to download, with no in-app purchases.

### Do ClockLesson or AIR by EBI have ads?

Neither ClockLesson nor AIR by EBI shows ads.

### Which is updated more often, ClockLesson or AIR by EBI?

ClockLesson ships an update every 5 months, and AIR by EBI every 5 days. Most recently, ClockLesson was updated on October 6, 2026 and AIR by EBI on October 7, 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.*