# WhenLesson vs Paperingo

The clearest difference is in-app purchases: WhenLesson at none against Paperingo's 1. WhenLesson also leads on iOS requirement (13.0 vs 16.4). Paperingo's advantage is update cadence (every 4 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Paperingo sells 1 in-app purchase, starting at $11.99 per month. WhenLesson asks for nothing beyond the download.

WhenLesson ships an update every 2 months, Paperingo every 4 days. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | WhenLesson | Paperingo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 9 MB | 47 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Grabchak](https://appshunter.io/developer/1703467916) | [Premsan Inc](https://appshunter.io/developer/1844639766) |

## What reviewers say

### WhenLesson

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

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

**In-app purchases:** none


### Paperingo

[App page](https://appshunter.io/ios/app/paperingo-thesis-and-papers/id6812834666)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Paperingo Monthly | $11.99 | per month |


## Frequently asked questions

### Is WhenLesson free?

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

### Is Paperingo free?

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

### Do WhenLesson or Paperingo have ads?

Neither WhenLesson nor Paperingo shows ads.

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

WhenLesson ships an update every 2 months, and Paperingo every 4 days. Most recently, WhenLesson was updated on October 17, 2026 and Paperingo on October 12, 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.*