# UU vs XFA

The clearest difference is price: XFA at Free against UU's $0.99. XFA also leads on update cadence (every 9 days vs every 21 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

XFA is free to download; UU costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UU ships an update every 21 months, XFA every 9 days. The most recent releases landed on June 1, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | UU | XFA |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/uu-uuid-generator/id1614731646/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 9 days** |
| Monetization | Paid | — |
| Size | 7 MB | 29 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JP McGlone LLC](https://appshunter.io/developer/850098774) | [XFA](https://appshunter.io/developer/1534488112) |

## What reviewers say

### UU

[App page](https://appshunter.io/ios/app/uu-uuid-generator/id1614731646)

Easily create unique identifiers for your projects. This tool generates UUIDs on demand and can automatically copy them to your clipboard. It also features on-the-fly QR code generation and supports dark mode for a comfortable user experience.

**Highlights:** Generate UUID, Auto-generate on launch, Auto-copy to clipboard, Generate QR code, Dark Mode support

**Features:** macOS Compatibility

**In-app purchases:** none


### XFA

[App page](https://appshunter.io/ios/app/xfa/id1630086940)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is UU free?

UU costs $0.99, with no in-app purchases.

### Is XFA free?

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

### Do UU or XFA have ads?

Neither UU nor XFA shows ads.

### Which is updated more often, UU or XFA?

UU ships an update every 21 months, and XFA every 9 days. Most recently, UU was updated on June 1, 2026 and XFA on September 17, 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.*