Comparison

SYS Activity Manager vs Device System Services

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

Head to head
About

SYS Activity Manager

Monitor your device's background processes, battery life, and network activity. This app provides insights into memory usage, disk space, and connection statuses, helping you diagnose network issues and optimize performance. It's designed for both expert and non-expert users.

Highlights
  • Monitor background processes and apps
  • Track device battery life and charging status
  • Analyze network connection and speed
  • Summarize disk usage
  • Visualize memory allocation
  • Diagnose network problems
Features
Read full description

• Learn about which Background Processes and Apps are running • Monitor iPad, iPod, iPhone Battery Life • Monitor LTE, 3G and WiFi network and speed • Summarizes your disk usage • Helpful tool to diagnosis network problem by connection status. • iOS 8 and iPhone 6 support • It is the application designed for Expert and Non-expert. The key features of this application include effectively taking care of network identification and bandwidth testing, see battery life and many more. Using “SYS Activity Manager” regularly will help you to monitor the battery life, test the WiFi/3G network. The new version of “SYS Activity Manager” is an universal application so you can use it in any device within iPhone, iPod Touch and iPad. Users Review: • Since I installed this app I have seen a huge difference in my battery life. it's an awesome app to have. - By p0ppetz • This app works nicely and I have noticed improvements in the operation of my iPhone already. - By brettwad Key Features: Memory (RAM) • Easy understanding of device memory status. • Visualization of Wired, Active, Inactive, Free memory allocation. Process • List display of running Background Applications and other System Processes. • How to close/manage Background Apps. Battery • Multiple visual displays detailing battery status and use. • Alarms to indicate charging status complete w/ accurate ‘time-to-charge’ displays. • 100% charge notification, effective when you are on a rush. • Full charge notification to prevent over-charging. • Configurable Full Charge & battery Maintenance alerts. • Tips on maximizing battery life when power not available. Note: Please discharge you battery at level 10% and complete full charge to adjust battery health first time. Disk • Visualization of disk space status and usage. Network • Detecting cellular data network & Wi-Fi network connection statuses. • IP & MAC Address display when available. • Internet connection speed test.

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!

Screenshots

SYS Activity Manager3 screens
Device System Services4 screens

Verdict

The call

The clearest difference is rating: Device System Services at 4.5 against SYS Activity Manager's 2.6. Device System Services also leads on review sentiment (52% vs 42%) and ratings volume (394 vs 89). SYS Activity Manager's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence and device support 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. SYS Activity Manager asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Device System Services holds the better App Store score, 4.5 against 2.6. Both are backed by a comparable volume of ratings — 89 and 394 respectively. Written reviews point the same way: 42% of SYS Activity Manager's written reviews are positive against 52% of Device System Services's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.

Scorecard7 real differences · 3 level
SYS Activity Manager versus Device System Services: the parameters behind the verdict, then further details
ParameterSYS Activity ManagerDevice System Services
PriceFreeFree
Rating2.6 (89 ratings)4.5 (394 ratings) — better
Positive reviews42.1% of reviews51.6% of reviews — better
Number of ratings89394 — better
Update frequencyEvery 4 monthsEvery 4 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better16.6
Further details — not scored
Size19 MB9 MB
Age rating4+4+
DeveloperSohel MazumderAlbert Parti

Customer experience

SYS Activity Manager

All ratings89 ratings
Positive37.1%
Neutral6.7%
Negative56.2%
Written reviews171 reviews
Positive42.1%
Neutral8.2%
Negative49.7%

Device System Services

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

Bugs and requests

SYS Activity Manager

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

SYS Activity Manager

No in-app purchases

1 purchases

Device System Services

One-time1
  • Remove ads System Service$1.99

Questions

Is SYS Activity Manager free?
SYS Activity Manager 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, SYS Activity Manager or Device System Services?
Device System Services is rated higher. SYS Activity Manager averages 2.6 out of 5 from 89 ratings, while Device System Services averages 4.5 from 394 ratings.
Do SYS Activity Manager or Device System Services have ads?
Device System Services shows ads; SYS Activity Manager does not.
Which is updated more often, SYS Activity Manager or Device System Services?
SYS Activity Manager ships an update every 4 months, and Device System Services every 4 months. Most recently, SYS Activity Manager was updated on October 9, 2026 and Device System Services on October 11, 2026.

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