# U vs Metis OS

The clearest difference is update cadence: Metis OS at fortnightly against U's every 4 months. U's advantage is iOS requirement (11.0 vs 16.0). 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.

U ships an update every 4 months, Metis OS fortnightly. The most recent releases landed on October 26, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | U | Metis OS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Size | 30 MB | 1 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Utilis Corp.](https://appshunter.io/developer/1446754606) | [Christian Daniel Johnson](https://appshunter.io/developer/1759691186) |

## What reviewers say

### U

[App page](https://appshunter.io/ios/app/u-view/id1446758038)

**In-app purchases:** none


### Metis OS

[App page](https://appshunter.io/ios/app/metis-os-tactical/id6581486072)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is U free?

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

### Is Metis OS free?

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

### Do U or Metis OS have ads?

Neither U nor Metis OS shows ads.

### Which is updated more often, U or Metis OS?

U ships an update every 4 months, and Metis OS fortnightly. Most recently, U was updated on October 26, 2026 and Metis OS on November 4, 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.*