Comparison

Device System Services vs SIM Card Status Checker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Device System Services

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
Read full description

Device System Service – System Information & Performance Monitoring Device System Service is a professional iOS application that provides detailed insights into your device’s hardware, network, memory, and storage. The app helps you monitor system performance, optimize resource usage, and ensure smooth operation. Key Features Hardware Information • Detailed specifications of your device’s model, processor, and GPU • Battery level and status monitoring • Biometric authentication support (Face ID, Touch ID) • Display size, brightness, and other screen-related details Network Status • IP address, Wi-Fi, and mobile network information • Internet connection check and speed data • Ping hosts or IP addresses to verify connectivity and response time • Local network insights and diagnostics Memory Usage • Detailed breakdown of memory usage (used, active, inactive, free memory) • Real-time memory monitoring with interactive charts • Performance tracking and optimization suggestions Tools The new Tools tab provides powerful built-in diagnostic utilities for advanced network analysis. • Ping Verify connectivity to any host or IP address and check network responsiveness in real time. Ideal for troubleshooting reachability and latency issues. • LAN Scan Discover active devices connected to your local network. Quickly identify IP addresses and detect available hosts within your subnet. • Port Scan Scan open TCP ports on a target device to analyze running services and network exposure. Useful for diagnostics, testing, and infrastructure validation. Storage Management • Total storage and available space display • Breakdown of space occupied by files and apps • Visual representation of disk usage with modern UI elements Settings & Privacy • Remove Ads – One-time purchase for a completely ad-free experience • Manage Consent – GDPR/CCPA compliance options • Ad Personalization – Customize ad preferences based on privacy policies Modern & User-Friendly Experience • Dark Mode support for a comfortable viewing experience • Interactive visual elements, graphs, and bars for easy interpretation • Optimized for both iPhone and iPad System Service Widgets – Overview The System Service app is designed for iOS system monitoring and now features three useful widgets that display key system information in real-time. Available Widgets: Device Information Widget Displayed Data: • Device name • Battery level • iOS version • Local (LAN) and external (WAN) IP addresses Usage: This widget provides a quick overview of your device, making it especially useful for developers, network administrators, and power users. Disk Usage Widget Displayed Data: • Disk usage percentage (circular progress bar) • Used storage amount (GB) • Total storage capacity (GB) Usage: This widget allows you to instantly check how much storage is available on your device. It’s particularly useful when managing large files or installing new applications. Memory Usage Widget Displayed Data: • Memory usage percentage (circular progress bar) • Used memory amount (GB) • Total memory capacity (GB) Usage: A great tool for monitoring background app memory usage, helping optimize device performance. How to Add the Widget? 1. Long-press the home screen. 2. Tap the ”+” icon in the top-left corner. 3. Scroll down to the System Service widgets. 4. Select your preferred widget size. 5. Tap “Add Widget.” Why Use It? • Provides quick system data access • Helps optimize storage and memory usage • Easily accessible—no need to open an extra app Download and try it now!

About

SIM Card Status Checker

This app provides detailed information about Apple iPhones, including IMEI status, carrier, SIM lock, iCloud status, and blacklist checks. It's useful for verifying a device's legitimacy before purchase or for understanding your current device's specifications.

Highlights
  • iPhone Carrier and SIMlock Checker
  • iCloud Status Checker
  • Find My iPhone Status
  • iPhone Black List Checker
  • Apple Serial Number Checker
  • iPhone Warranty Checker
Features
Read full description

iPhone SIM Card Status Checker app offers comprehensive services for Apple iPhone phones. If you need detailed information about your iOS device, you will find them all using our app. You don`t have an iPhone yet, but are you planning to buy? Before you do this, you can also use this app to verify and carefully check the device you want to buy. The Free iPhone IMEI checker app helps you ensure that the phone comes from a legal source. Knowing the IMEI number of any device or smartphone or Serial Number, you'd be able to check the exact data of the given model. Before you buy any phone, it is a must that you check the status of iCloud, Lock or Find My iPhone. If you want to buy a used or 2nd hand phone make sure it is not blacklisted. Free iPhone IMEI checker Features iPhone Carrier and SIMlock Checker Check your iPhone original carrier, simlock status, and Find my iPhone iCloud Status Checker Find out if the iPhone or iPad has locked or clean iCloud status. It’s the best way to check if the Find My iPhone (FMI) was activated on your iOS device. Find My iPhone Check if an iPhone has an activated Find My iPhone feature. It's a must that you check the FMI status of your smartphone every time you buy a second-hand device. iPhone Black List Checker Ensure that the iPhone or iPad is not blacklisted because of being reported lost, stolen, or unpaid bills. Apple Serial Number Checker If you are an iOS (iPhone, iPad, iPod or MacBook even iWatch or Apple TV) user, you can find vital or even hidden information about your device just by typing in the Serial Number. iPhone Warranty Checker If you would like to UNLOCK your iPhone, you need to know the carrier which locked the device. You'd get all the necessary information using this app Download iPhone SIM Card Status Checker Today

Screenshots

Device System Services4 screens
SIM Card Status Checker4 screens

Verdict

The call

The clearest difference is review sentiment: SIM Card Status Checker at 81% against Device System Services's 52%. SIM Card Status Checker also leads on update cadence (monthly vs every 4 months) and rating (4.7 vs 4.5). On price, ratings volume, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Device System Services sells 1 one-off in-app purchase and SIM Card Status Checker sells 18 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

SIM Card Status Checker holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 394 and 881 respectively. Written reviews point the same way: 52% of Device System Services's written reviews are positive against 81% of SIM Card Status Checker's.

UpkeepUpdate frequency

Device System Services ships an update every 4 months, SIM Card Status Checker monthly. The most recent releases landed on September 19, 2026 and September 20, 2026 respectively.

Scorecard3 real differences · 7 level
Device System Services versus SIM Card Status Checker: the parameters behind the verdict, then further details
ParameterDevice System ServicesSIM Card Status Checker
PriceFreeFree
Rating4.5 (394 ratings)4.7 (881 ratings) — better
Positive reviews51.6% of reviews80.8% of reviews — better
Number of ratings394881 — better
Update frequencyEvery 4 monthsMonthly — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.0 — better
Further details — not scored
Size9 MB46 MB
Age rating4+4+
DeveloperAlbert PartiRana Parulben

Customer experience

Device System Services

All ratings394 ratings
Positive86.3%
Neutral5.3%
Negative8.4%
Written reviews64 reviews
Positive51.6%
Neutral1.6%
Negative46.9%

SIM Card Status Checker

All ratings881 ratings
Positive92.5%
Neutral4.2%
Negative3.3%
Written reviews99 reviews
Positive80.8%
Neutral4.0%
Negative15.2%

User reviews

Device System Services

From 394 App Store ratings

What we love

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

Room to improve

  • 📺 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

SIM Card Status Checker

From 881 App Store ratings

What we love

  • 🚀 Fast and easy to use
  • 👍 Brilliant and necessary
  • 🔓 Successful unlock
  • 👍 Excellent
  • 👍 Good app

Room to improve

  • 🐛 Doesn't work
  • 🐛 Scam, doesn't unlock anything
  • 🐛 App doesn't work
  • 🐛 Para tuzağı (money trap)
  • 🐛 Never received any email

Bugs and requests

Device System Services

Reported bugs

9 issues
  • 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
Show 4 more
  • App force-closes when switching between tabs
  • Unresponsive UI elements during ad display
  • App disappears or stops functioning after device updates
  • Suspicious clipboard activity on launch

Requested features

6 requests
  • 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
Show 1 more
  • Dark mode support

SIM Card Status Checker

Reported bugs

2 issues
  • Invalid IMEI number
  • No response to inquiry

Requested features

2 requests
  • Support for Apple SIM
  • Improve email delivery

In-app purchases

1 purchases

Device System Services

One-time1
  • Remove ads System Service$1.99
18 purchases

SIM Card Status Checker

One-time18
  • Carrier Unlock Code Service.$1.99
  • Carrier Unlock Code Service.$2.99
  • Unlock Code$3.00
Show 15 more
  • Carrier Unlock Code Service.$3.99
  • Carrier Unlock Code Service.$4.99
  • Unlock Code$10.99
  • Unlock Code$12.99
  • Remove Advertisement$24.99
  • Unlock Code$56.00
  • Unlock Code$106.99
  • Carrier Unlock Code Service$174.99
  • Carrier Unlock Code Service.$179.99
  • Carrier Unlock Code Service.$199.99
  • Carrier Unlock Code Service.$209.99
  • Carrier Unlock Code Service.$219.99
  • Carrier Unlock Code Service.$239.99
  • Carrier Unlock Code Service$249.99
  • Carrier Unlock Code Service.$299.99

Questions

Is Device System Services free?
Device System Services is free to download, with in-app purchases available.
Is SIM Card Status Checker free?
SIM Card Status Checker is free to download, with in-app purchases available.
Which has better reviews, Device System Services or SIM Card Status Checker?
SIM Card Status Checker is rated higher. Device System Services averages 4.5 out of 5 from 394 ratings, while SIM Card Status Checker averages 4.7 from 881 ratings.
Do Device System Services or SIM Card Status Checker have ads?
Both Device System Services and SIM Card Status Checker show ads.
Which is updated more often, Device System Services or SIM Card Status Checker?
Device System Services ships an update every 4 months, and SIM Card Status Checker monthly. Most recently, Device System Services was updated on September 19, 2026 and SIM Card Status Checker on September 20, 2026.

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