# Otto vs Wlango

The clearest difference is in-app purchases: Wlango at none against Otto's 6. Otto's advantage is ads (none vs shown) and device support (4 vs 2). On price and iOS requirement there is nothing between them.

Both are free to download. Otto sells 6 in-app purchases, starting at $3.99 per month. Wlango asks for nothing beyond the download.

## The numbers

| Metric | Otto | Wlango |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | — |
| Size | 174 MB | 60 MB |
| Requires iOS | 16.0.0 | **15.1** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Tom Honey](https://appshunter.io/developer/1782767469) | [abdelrahman sakr](https://appshunter.io/developer/6788177277) |

## What reviewers say

### Otto

[App page](https://appshunter.io/ios/app/otto-language-learning/id6738887838)

**Features:** Apple Watch app

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Otto Pro - Monthly | $3.99 | per month |
| Otto Pro - Yearly | $29.99 | per year |
| 20 Tokens | $1.99 | one-time |
| 70 Tokens | $4.99 | one-time |
| 180 Tokens | $9.99 | one-time |
| 450 Tokens | $24.99 | one-time |


### Wlango

[App page](https://appshunter.io/ios/app/wlango-learn-english-words/id6804278768)

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

**In-app purchases:** none


## Frequently asked questions

### Is Otto free?

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

### Is Wlango free?

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

### Do Otto or Wlango have ads?

Wlango shows ads; Otto does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*