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Device Tester - System Checker

Device Tester - System Checker

Check Memory & Test Hardware

263 ratings
182 reviews
🔧 Utilities
📊 Productivity
Free
In-App Purchases

Details

Released
May 8, 2014
Updated
October 3, 2026

Features

Developer

Phan Nhut
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Device Tester - System Checker screenshot #6 for iPhone
iphone
ipad
🧾$1.99
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About

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
Show original description

What users say about Device Tester

Reviews of Device Tester are mixed: the Utilities app is rated 4.0/5 from 263 App Store ratings. What users like most: user-friendly and intuitive design, effective RAM memory cleaning and freeing. Top complaints: frequent app crashes on newer iOS versions, excessive and intrusive advertisements. Summarized from real user reviews.

Positive things

  • 👍User-friendly and intuitive design
  • 🚀Effective RAM memory cleaning and freeing
  • 💰Affordable one-time pro version purchase
  • 📊Detailed device analysis and performance monitoring
  • ⏱️Quick and simple to use
  • 🔧Adjustable features like flashlight brightness
  • 📱Compatible with older devices and iOS versions
  • ⭐Reliable performance over many years of use

Negative things

  • 🐛Frequent app crashes on newer iOS versions
  • 📢Excessive and intrusive advertisements
  • ❌Limited functionality in free version
  • 😞Degraded performance after updates
  • 🔄Inconsistent results and reliability issues
  • 📉Removed features in recent updates
  • ⚠️Compatibility problems with newer iPhone models
  • 🤔Unclear value proposition between free and pro versions
See all reviews

What's New in Device Tester

27.1.2

October 3, 2026

Here’s what’s new in this update: • Fixed bugs. Thank you for choosing our app!

More
1

Subscriptions & In-App Purchases

$1.99

Pro Version

- Upgrade to Pro version.

User reviews

Most RecentHighest RatedLowest Rated

Great app

Excellent app to refresh memory and check your iphone / iPad are working OK
LLien1735

New app

The older app was more informative.
IIndyHarley

進化いっぺん

使いやすくなった
早くなった
正確になった
(お金取る様になった)
バージョンアップシステム

From IOS
MMaxExpert68

o desenvolvedor atualizou

não entendi o que mudou kkkkk foi traduzir
Ffmdsilva

New Update

I’ve used this product for years and the new update is terrible. It’s not the same product. The duplicate photo finder is 100% inaccurate.
LLB_TX

Response from developer

Thank you for your feedback! We’ve just released version 27.1.1 with several improvements and fixes. Please give it another try, and we hope you’ll have a better experience with the app!

See 177 more reviews

Developer apps

Device Tester Pro:System Check
Device Tester Pro:System Check

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Memory & Disk Scanner - Check System Information
Memory & Disk Scanner - Check System Information

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In-App Purchases
Folder Lock - Hide Photo,Video
Folder Lock - Hide Photo,Video

Secure Vault: Protect,Compress

📷 Photo & Video

(13)

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In-App Purchases
Password Lock Private Photo & Video - Don't Touch This
Password Lock Private Photo & Video - Don't Touch This

by Phan Nhut

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Free
Clean & Clear Duplicate Master Contact Cleaner - Monitor & Check Memory Disk RAM Free
Clean & Clear Duplicate Master Contact Cleaner - Monitor & Check Memory Disk RAM Free

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(71)

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See developer apps

User experience

🐞

Reported Bugs

8 issues

App crashes during memory scan on newer iOS versions

Bug

Crashes on iPhone 16 and iPhone 17 Pro models

Bug

App fails to open or closes immediately

Bug

Memory cleaning returns 0.0MB results

Bug

Incompatibility with iOS 14 and later versions

Bug

Pro version disappears after app updates

Bug

Push notification spam

Bug

Excessive pop-ups preventing app access

Bug
✨

Requested Features

8 requests

Landscape view support for device rotation

Feature

Deeper cleaning of junk files and cache

Feature

More transparent proof of app actions and results

Feature

Ability to keep pro version after updates

Feature

Instruction guide on optimal app usage

Feature

Real-time feedback on device performance

Feature

Comparison tool for different phone models

Feature

Better integration with system settings

Feature

FAQ

What information does this app provide?

This app provides real-time system information. This includes details on memory (RAM) usage, disk usage, CPU usage, network activity, battery status, and general system information.

Is this app free to use?

The application is available for free. However, it does offer in-app purchases, suggesting that some features or enhancements may require payment.

What are the main benefits of using this app?

The primary benefit is gaining insight into your device's performance. By monitoring RAM, CPU, and disk usage, you can better understand how your device is functioning and identify potential areas for optimization.

What kind of system information can I check?

You can check a comprehensive range of system metrics. This includes real-time usage for RAM, disk space, and CPU processing power, alongside network traffic and battery health.