Device Tester vs SYSMonitor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Device Tester
Monitor your device's real-time system information, including RAM, disk, and CPU usage. Track network activity, battery status, and other system details to understand your device's performance.
- Real-time RAM usage
- Disk usage monitoring
- CPU usage tracking
- Network activity
- Battery status
- System information
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Device Tester: A simple tool for hardware testing with lightweight diagnostic checks for key components. Key Features: • Hardware Test: → Test Camera, Bluetooth, Audio, Microphone, Keyboard Input, Sensors, and other hardware components. • System Info Tools: → View quick device details including RAM, CPU, storage, network, and battery status. • Utilities: → QR Code Generator → Random Selection Tool → Storage Cleaner → Clipboard Cleaner → Flashlight Torch • Thank you for choosing our app!
SYSMonitor
Monitor your device's performance with real-time insights into CPU, memory, and storage usage. Track network speed, view detailed device information, and access key metrics directly from your Today widget. Understand your device's health and optimize its performance.
- CPU usage monitoring
- Memory (RAM) status
- Storage (ROM) visualization
- Real-time network speed
- Network details (IP, SSID, Ping)
- Basic device information
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*** NEW ***More than just Widget monitoring your iPhone and iPad!!! *** Still thinking about why the phone is so hot,IS the CPU utilization too high? Why the data traffic consumed so quickly? Background processes too much? How much is left of my Storage? The app monitors CPU, MEMORY(RAM), Storage(ROM), Real-time network speed and the other device information. And it can be placed in 'Today' as a widget. Click the widget to get more functions and detailed information about your device. Including: √ Monitor solid color model √, Network # WiFi, DNS, SSID, internal and public network IP address, real-time network speed, Ping test and many other functions. √. Storage(ROM) # Visualization of disk space status and usage. √. CPU # One or more CPU usage updated in real time √. Memory (RAM) # Easy understanding of device memory status. # Visualization of Used, Active, Inactive, Free. √. Basic Info: #Device Name ,Device Model, IOS version, Screen resolution, Memory, Storage, Battery , OpenGL etc.
Screenshots
Verdict
The clearest difference is ads: Device Tester at none against SYSMonitor's shown. Device Tester also leads on update cadence (weekly vs every 5 months) and rating (4.0 vs 3.6). SYSMonitor's advantage is iOS requirement (13.0 vs 16.0). On price, in-app purchases, monetization model 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
Both are free to download. Device Tester sells 1 one-off in-app purchase and SYSMonitor sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Device Tester holds the better App Store score, 4.0 against 3.6. That said, the two scores are not equally well evidenced: Device Tester has 231 ratings behind it against 38, so its average is the more settled of the two. Written reviews point the same way: 55% of Device Tester's written reviews are positive against 40% of SYSMonitor's.
Device Tester ships an update weekly, SYSMonitor every 5 months. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.
| Parameter | Device Tester | SYSMonitor |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (231 ratings) — better | 3.6 (38 ratings) |
| Positive reviews | 55.1% of reviews — better | 39.9% of reviews |
| Number of ratings | 231 — better | 38 |
| Update frequency | Weekly — better | Every 5 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Phan Nhut | 泽辉 王 |
Customer experience
Device Tester
SYSMonitor
Bugs and requests
Device Tester
Reported bugs
8 issues- App crashes during memory scan on newer iOS versions
- Crashes on iPhone 16 and iPhone 17 Pro models
- App fails to open or closes immediately
- Memory cleaning returns 0.0MB results
- Incompatibility with iOS 14 and later versions
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- Pro version disappears after app updates
- Push notification spam
- Excessive pop-ups preventing app access
Requested features
8 requests- Landscape view support for device rotation
- Deeper cleaning of junk files and cache
- More transparent proof of app actions and results
- Ability to keep pro version after updates
- Instruction guide on optimal app usage
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- Real-time feedback on device performance
- Comparison tool for different phone models
- Better integration with system settings
SYSMonitor
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Device Tester
- Pro Version$1.99
SYSMonitor
- Permanently Remove ads$1.99
Questions
Is Device Tester free?
Is SYSMonitor free?
Which has better reviews, Device Tester or SYSMonitor?
Do Device Tester or SYSMonitor have ads?
Which is updated more often, Device Tester or SYSMonitor?
Other comparisons
