# WhenLesson vs UCHU

The clearest difference is update cadence: UCHU at every 10 days against WhenLesson's every 2 months. WhenLesson's advantage is iOS requirement (13.0 vs 16.0). 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.

WhenLesson ships an update every 2 months, UCHU every 10 days. The most recent releases landed on September 11, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | WhenLesson | UCHU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (12 ratings)](https://appshunter.io/ios/app/uchu-personalized-lessons/id6752874914/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 90.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | — | Free |
| Size | 9 MB | 46 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Grabchak](https://appshunter.io/developer/1703467916) | [Erik Salahyan](https://appshunter.io/developer/1804146208) |

## What reviewers say

### WhenLesson

[App page](https://appshunter.io/ios/app/whenlesson/id6462826446)

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

**In-app purchases:** none


### UCHU

[App page](https://appshunter.io/ios/app/uchu-personalized-lessons/id6752874914)

This app offers personalized learning paths for any topic imaginable, from quantum physics to meme history. It empowers users to create their own lessons, moving beyond traditional textbooks and outdated curriculums for a dynamic and accessible knowledge experience.

**Highlights:** Personalized learning paths, User-created lessons, Learn any topic, No traditional curriculum, Dynamic knowledge acquisition

**In-app purchases:** none


## Frequently asked questions

### Is WhenLesson free?

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

### Is UCHU free?

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

### Do WhenLesson or UCHU have ads?

Neither WhenLesson nor UCHU shows ads.

### Which is updated more often, WhenLesson or UCHU?

WhenLesson ships an update every 2 months, and UCHU every 10 days. Most recently, WhenLesson was updated on September 11, 2026 and UCHU on September 25, 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.*