# Device System Services vs UUID

The clearest difference is rating: UUID at 5.0 against Device System Services's 4.5. UUID also leads on in-app purchases (none vs 1) and ads (none vs shown). Device System Services's advantage is ratings volume (394 vs 1). On price, review sentiment and device support there is nothing between them.

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

UUID 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 1, so its average is the more settled of the two. Written reviews complicate that: 52% of Device System Services's written reviews are positive against 50% of UUID's, so the app with the better star average is not the one people write more warmly about.

Device System Services ships an update every 4 months, UUID every 2 months. The most recent releases landed on September 19, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Device System Services | UUID |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (394 ratings)](https://appshunter.io/ios/app/device-system-services-tools/id1126227676/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/uuid-generator/id1603050260/reviews)** |
| Number of ratings | **394** | 1 |
| Positive reviews | **51.6% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 9 MB | 7 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Albert Parti](https://appshunter.io/developer/534966701) | [Julian Lau](https://appshunter.io/developer/1603050262) |

## What reviewers say

### 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


### UUID

[App page](https://appshunter.io/ios/app/uuid-generator/id1603050260)

This utility app quickly generates random Version 4 or Version 1 UUIDs. You can copy and share them directly, and even generate up to 5000 at once. It works both online and offline.

**Highlights:** Generate Version 4 UUIDs, Generate Version 1 UUIDs, Copy and share UUIDs, Batch generation (up to 5000), Offline functionality, Online functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Device System Services free?

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

### Is UUID free?

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

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

UUID is rated higher. Device System Services averages 4.5 out of 5 from 394 ratings, while UUID averages 5.0 from 1 ratings.

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

Device System Services shows ads; UUID does not.

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

Device System Services ships an update every 4 months, and UUID every 2 months. Most recently, Device System Services was updated on September 19, 2026 and UUID on September 6, 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.*