# langium vs ACU Impact

The clearest difference is ads: ACU Impact at none against langium's shown. ACU Impact also leads on iOS requirement (13.0 vs 15.1). On price, update cadence, 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.

langium ships an update every 10 days, ACU Impact every 3 weeks. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | langium | ACU Impact |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Size | 46 MB | 87 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [BFZ MEKATRONIK YAZILIM MUHENDISLIK SANAYI VE TICARET LIMITED SIRKETI](https://appshunter.io/developer/1837525630) | [ACIBADEM MEHMET ALI AYDINLAR UNIVERSITESI](https://appshunter.io/developer/6779962476) |

## What reviewers say

### langium

[App page](https://appshunter.io/ios/app/langium/id6753336522)

**Features:** macOS Compatibility

**In-app purchases:** none


### ACU Impact

[App page](https://appshunter.io/ios/app/acu-impact/id6779962474)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is langium free?

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

### Is ACU Impact free?

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

### Do langium or ACU Impact have ads?

langium shows ads; ACU Impact does not.

### Which is updated more often, langium or ACU Impact?

langium ships an update every 10 days, and ACU Impact every 3 weeks. Most recently, langium was updated on October 25, 2026 and ACU Impact on October 28, 2026.

---

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