# OBAdm vs Langu

The clearest difference is in-app purchases: OBAdm at none against Langu's 4. OBAdm also leads on update cadence (every 2 days vs weekly) and iOS requirement (14.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Langu sells 4 in-app purchases, starting at $7.99 per month. OBAdm asks for nothing beyond the download.

OBAdm ships an update every 2 days, Langu weekly. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | OBAdm | Langu |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Free | — |
| Size | 195 MB | 80 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | +4 | 12+ |
| Developer | [MOBTEX DESENVOLVIMENTO DE SOFTWARE EIRELI](https://appshunter.io/developer/1532814117) | [Kaio Alexandre Marques](https://appshunter.io/developer/6807806612) |

## What reviewers say

### OBAdm

[App page](https://appshunter.io/ios/app/obadm/id6503164155)

This app provides online tests and an e-book for students and schools participating in OBAdm. It also features the 'Jogo Floresta Bela' game.

**Highlights:** Online tests, Jogo Floresta Bela game, E-book access, Exclusive for OBAdm participants

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

**In-app purchases:** none


### Langu

[App page](https://appshunter.io/ios/app/langu-practice-languages/id6807806609)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Langu Plus Monthly | $7.99 | per month |
| Langu Pro Monthly | $14.99 | per month |
| Langu Plus Annual | $59.00 | per year |
| Langu Pro Annual | $109.99 | per year |


## Frequently asked questions

### Is OBAdm free?

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

### Is Langu free?

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

### Do OBAdm or Langu have ads?

Neither OBAdm nor Langu shows ads.

### Which is updated more often, OBAdm or Langu?

OBAdm ships an update every 2 days, and Langu weekly. Most recently, OBAdm was updated on October 14, 2026 and Langu on October 11, 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.*