# Ostrum vs ACG Driver

The clearest difference is iOS requirement: Ostrum at 13.0 against ACG Driver's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ostrum ships an update every 6 weeks, ACG Driver monthly. The most recent releases landed on August 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Ostrum | ACG Driver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Size | 57 MB | 60 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ostrum Tech Limited](https://appshunter.io/developer/1596744681) | [Roadrunners MECO Ltd](https://appshunter.io/developer/1240330384) |

## What reviewers say

### Ostrum

[App page](https://appshunter.io/ios/app/ostrum/id6447539444)

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

**In-app purchases:** none


### ACG Driver

[App page](https://appshunter.io/ios/app/acg-driver/id6466640934)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ostrum free?

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

### Is ACG Driver free?

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

### Do Ostrum or ACG Driver have ads?

Neither Ostrum nor ACG Driver shows ads.

### Which is updated more often, Ostrum or ACG Driver?

Ostrum ships an update every 6 weeks, and ACG Driver monthly. Most recently, Ostrum was updated on August 17, 2026 and ACG Driver on September 10, 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.*