# Momo vs Orientation Week Leiden (OWL)

The clearest difference is update cadence: Momo at every 3 weeks against Orientation Week Leiden (OWL)'s every 4 months. Orientation Week Leiden (OWL)'s advantage is iOS requirement (16.0 vs 18.0). 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.

Momo ships an update every 3 weeks, Orientation Week Leiden (OWL) every 4 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Momo | Orientation Week Leiden (OWL) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 109 MB | 47 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Explore Momo B.V.](https://appshunter.io/developer/1598815871) | [Zooma B.V.](https://appshunter.io/developer/418861795) |

## What reviewers say

### Momo

[App page](https://appshunter.io/ios/app/momo/id6449619727)

**Features:** Vision Pro support

**In-app purchases:** none


### Orientation Week Leiden (OWL)

[App page](https://appshunter.io/ios/app/orientation-week-leiden-owl/id6738985921)

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

**In-app purchases:** none


## Frequently asked questions

### Is Momo free?

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

### Is Orientation Week Leiden (OWL) free?

Orientation Week Leiden (OWL) is free to download, with no in-app purchases.

### Do Momo or Orientation Week Leiden (OWL) have ads?

Neither Momo nor Orientation Week Leiden (OWL) shows ads.

### Which is updated more often, Momo or Orientation Week Leiden (OWL)?

Momo ships an update every 3 weeks, and Orientation Week Leiden (OWL) every 4 months. Most recently, Momo was updated on October 30, 2026 and Orientation Week Leiden (OWL) on October 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.*