# UUID Generator vs Device System Services

The clearest difference is review sentiment: UUID Generator at 100% against Device System Services's 52%. UUID Generator also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 1). Device System Services's advantage is ratings volume (394 vs 4) and update cadence (every 4 months vs every 15 months). On price and device support there is nothing between them.

Both are free to download. Device System Services sells 1 one-off in-app purchase. UUID Generator asks for nothing beyond the download.

UUID Generator holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Device System Services has 394 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of UUID Generator's written reviews are positive against 52% of Device System Services's.

UUID Generator ships an update every 15 months, Device System Services every 4 months. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | UUID Generator | Device System Services |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/uuid-generator-easily-generate-random-uuids/id1067667251/reviews)** | [4.5 (394 ratings)](https://appshunter.io/ios/app/device-system-services-tools/id1126227676/reviews) |
| Number of ratings | 4 | **394** |
| Positive reviews | **100.0% of reviews** | 52.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 9 MB |
| Requires iOS | **10.2** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Horvath](https://appshunter.io/developer/1000110315) | [Albert Parti](https://appshunter.io/developer/534966701) |

## What reviewers say

### UUID Generator

[App page](https://appshunter.io/ios/app/uuid-generator-easily-generate-random-uuids/id1067667251)

Easily create Universal Unique Identifiers with a clean interface. Tap to copy generated IDs to your clipboard for seamless pasting. Enjoy dynamic background colors that change with each new identifier.

**Highlights:** Generate Universal Unique Identifiers (UUIDs), One-tap copy to clipboard, Vibrant, changing background colors, Simple and elegant interface, Supports iPhone, iPad, and iPod

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

**In-app purchases:** none


### Device System Services

[App page](https://appshunter.io/ios/app/device-system-services-tools/id1126227676)

Monitor your device's hardware, network, memory, and storage with detailed insights and performance tracking. Includes diagnostic tools for network analysis and storage management. Offers widgets for real-time system information.

**Highlights:** Hardware specifications, Network status and diagnostics, Memory usage monitoring, Ping, LAN Scan, Port Scan tools, Storage management, System information widgets

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads System Service | $1.99 | one-time |

**What reviewers like**

- 👍 Clean and easy-to-use interface
- 🚀 Fast and responsive performance
- 📊 Comprehensive system information display
- 🌐 Useful network information details
- ⏱️ Shows device uptime information

**What reviewers complain about**

- 📺 Excessive full-screen video advertisements
- 🔊 Intrusive ads with sound that startle users
- ⚠️ Misleading security/storage warning popups
- 🎮 Irrelevant ads (e.g., game ads on iOS)
- 💰 Ads present even in paid version

**Reported bugs**

- App crashes on startup/launch
- Crashes when network module acquires external IP
- Requires airplane mode or disabled connectivity to function
- Incorrect device specifications (resolution, model variants)
- Static pie charts instead of dynamic system statistics

**Requested features**

- Option to delete accidentally copied items
- System reset functionality to restore original settings
- Camera information display
- External USB disk space usage tracking
- Memory cleaning/optimization features


## Frequently asked questions

### Is UUID Generator free?

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

### Is Device System Services free?

Device System Services is free to download, with in-app purchases available.

### Which has better reviews, UUID Generator or Device System Services?

UUID Generator is rated higher. UUID Generator averages 5.0 out of 5 from 4 ratings, while Device System Services averages 4.5 from 394 ratings.

### Do UUID Generator or Device System Services have ads?

Device System Services shows ads; UUID Generator does not.

### Which is updated more often, UUID Generator or Device System Services?

UUID Generator ships an update every 15 months, and Device System Services every 4 months. Most recently, UUID Generator was updated on October 10, 2026 and Device System Services on October 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.*