# Data Usage Cat vs Device System Services

The clearest difference is rating: Device System Services at 4.5 against Data Usage Cat's 4.0. Device System Services also leads on ratings volume (394 vs 1). Data Usage Cat's advantage is in-app purchases (none vs 1) and ads (none vs shown). 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. Data Usage Cat asks for nothing beyond the download.

Device System Services holds the better App Store score, 4.5 against 4.0. 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: 56% of Data Usage Cat's written reviews are positive against 52% of Device System Services's, so the app with the better star average is not the one people write more warmly about.

Data Usage Cat ships an update every 3 weeks, Device System Services every 4 months. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Data Usage Cat | Device System Services |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/data-usage-cat/id755118884/reviews) | **[4.5 (394 ratings)](https://appshunter.io/ios/app/device-system-services-tools/id1126227676/reviews)** |
| Number of ratings | 1 | **394** |
| Positive reviews | **55.9% of reviews** | 52.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 43 MB | 9 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JchanKchan](https://appshunter.io/developer/471801869) | [Albert Parti](https://appshunter.io/developer/534966701) |

## What reviewers say

### Data Usage Cat

[App page](https://appshunter.io/ios/app/data-usage-cat/id755118884)

This app helps you monitor your smartphone's data usage with a cute cat interface. It tracks cellular and Wi-Fi data, automatically resets on your bill cycle date, and displays key statistics through the cat's expressions. Stay within your data limits with this easy-to-use utility.

**Highlights:** Cat-themed data usage tracking, Cellular and Wi-Fi monitoring, Automatic bill cycle reset, Background tracking, View past usage by bill cycle

**Features:** macOS Compatibility

**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 Data Usage Cat free?

Data Usage Cat 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, Data Usage Cat or Device System Services?

Device System Services is rated higher. Data Usage Cat averages 4.0 out of 5 from 1 ratings, while Device System Services averages 4.5 from 394 ratings.

### Do Data Usage Cat or Device System Services have ads?

Device System Services shows ads; Data Usage Cat does not.

### Which is updated more often, Data Usage Cat or Device System Services?

Data Usage Cat ships an update every 3 weeks, and Device System Services every 4 months. Most recently, Data Usage Cat was updated on October 14, 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.*