# Device Tester - System Checker — Check Memory & Test Hardware

> Real-time system information checker for memory, disk, CPU, network, and battery. (iPhone/iPad app by Phan Nhut.)

- Source: https://appshunter.io/ios/app/device-tester-system-checker/id873671623 (this page in markdown: same URL + `.md`)
- Developer: [Phan Nhut](https://appshunter.io/developer/849063753)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.00/5 from 219 App Store ratings · 175 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 8 MB
- Languages: American English
- Released: 2014-05-08
- Data updated: 2026-09-17
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/device-tester-system-checker/id873671623/reviews.md

## What is Device Tester?

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!

## Key features

- Real-time RAM usage
- Disk usage monitoring
- CPU usage tracking
- Network activity
- Battery status
- System information

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Version | $1.99 | one-time |


## What do users think of Device Tester?

Overall sentiment: mixed

**Pros**

- 👍 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

**Cons**

- 🐛 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

**Commonly reported bugs**

- 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
- Pro version disappears after app updates
- Push notification spam
- Excessive pop-ups preventing app access

**Most requested features**

- 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
- Real-time feedback on device performance
- Comparison tool for different phone models
- Better integration with system settings

## Recent user reviews (10 of 175)

All indexed reviews: https://appshunter.io/ios/app/device-tester-system-checker/id873671623/reviews.md

### 1/5 — WTF

*2026-07-26*

На новой системе иос не работает вылетает при начале работы разрабы подчините

### 1/5 — It crashes

*2026-04-27*

It crashes when I use it. I paid for it, and it still happens. The worst $2 I've ever spent in my life.

### 2/5 — Memory pro

*2025-12-05*

Even though I’ve changed my device to the new iPhone 17  pro the app keeps crashing and says to leave feedback if the issue continues. I did upgrade to the pro version on my previous device which the app was fine. Now it’s just useless!

### 5/5 — Old school

*2025-10-13*

Brilliant app. I've had it for years, really helps on old systems.im running iPad 2,  keeping it alive. 👍

### 1/5 — NEEDS Fixing

*2025-06-25*

Not running right it starting to act up when I got my new iPhone 16ce now it won’t clean memory. Every time I try it keeps falling. Please fix problem. Have a wonderful day.

### 5/5 — Well constructed

*2025-02-15*

Very user friendly design! Excellently setup, love that you have the ability to adjust the flashlight brightness! Well thought out and executed layout. Even the standard free version is great giving an in depth analysis of the device it’s installed on, with the option to compare your current model of phone to other models on the market. And for a one time payment of only $2, you can increase the range of analysis to give real time feedback on an even deeper level of phone performance! Two thumbs up 👍🏽👍🏽

### 5/5 — Норм

*2025-02-13*

Норм❗️

### 1/5 — Funktioniert nicht mehr

*2024-11-26*

Nach Update auf IOS 18.1.1. ist der Scan fehlerhaft.Bleibt im roten Bereich  stehen.Schade denn ansonsten war es eine gute App.

### 4/5 — All -Okk -!

*2024-10-17*

Thank -!!!

### 1/5 — iOS 18

*2024-09-19*

Wo bleibt ein Update??????

## Frequently asked questions about Device Tester

### 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.

## Version history (last 5 releases)

### 27.1 — 2026-09-15

Here’s what’s new in this update:
• Added a new Storage Cleaner feature.
• Improved overall stability.
• Fixed a few minor bugs.

Changes in Version 27.0:
• Renamed the app to "Device Tester - System Checker".
• Added Device Tester for hardware diagnostics and component checks.
• Added new tools: QR Code Generator, Random Selection Tool, and Clear Clipboard.
• Added VPN information.
• Remove legacy features that are no longer supported on modern iOS versions.
• Completely redesigned the UI with SwiftUI, following the design language of iOS 26 and later.
• Improved iPad multitasking support.
• Built with the iOS 26 SDK.

Thank you for choosing our app!

### 27.0 — 2026-09-15

Here’s what’s new in this update:

NEW FEATURES:
• Add new feature: Device Tester for hardware diagnostics and component checks
• Add new tools: QR Code Generator, Random Selection Tool, Clear Clipboard
• Add VPN information

IMPROVEMENTS:
• Entire UI rewritten using SwiftUI
• Improve iPad multitasking support
• Smoother performance and improved stability
• Built with the iOS 26 SDK.

CHANGES:
• Renamed the app to “Device Tester - System Checker”
• Remove legacy features that are no longer supported on modern iOS versions

BUG FIXES:
• Fix crash.
• Fix various bugs.

We’re grateful that you’re still using our app and hope you’ll continue to enjoy this major update. Thank you for your support!

### 3.3.5 — 2015-09-18

This app has been updated by Apple to display the Apple Watch app icon.

- Fix Bugs

### 3.3.4 — 2015-09-12

- Remove Clean Memory & Clean Disk to compliance with the App Store Review Guidelines.I do apologize for this. These features only update information for Memory or Disk now.

### 3.3.3 — 2015-02-26

- Change information about Memory: "Active" Memory also includes "Inactive" memory.
- Fix always crash on iOS 7.

## Apps similar to Device Tester

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Super Cleaner - Clean Storage+](https://appshunter.io/ios/app/super-cleaner-clean-storage-plus/id1583687807) | 3.8 (141) | Free | Utilities |
| [AI Cleaner Max-Clean Up Device](https://appshunter.io/ios/app/ai-cleaner-max-clean-up-device/id855008026) | 3.9 (1,889) | Free | Utilities |
| [Battery Power Doctor & Booster](https://appshunter.io/ios/app/battery-power-doctor-and-booster/id545267876) | 3.7 (22) | Free | Utilities |
| [Device Monitor - RAM CPU GPU](https://appshunter.io/ios/app/device-monitor-ram-cpu-gpu/id6752408732) | — | Free | Utilities |
| [Battery Life Health Doctor Pro](https://appshunter.io/ios/app/battery-life-health-doctor-pro/id1180887748) | 4.4 (7,889) | Free | Utilities |
| [Device Monitor & Diagnostics +](https://appshunter.io/ios/app/device-monitor-and-diagnostics-plus/id6748753384) | 4.0 (2) | Free | Utilities |

## More apps by Phan Nhut

- [Smart Memory Pro - Check RAM & System Checker](https://appshunter.io/ios/app/smart-memory-pro-check-ram-and-system-checker/id849114011)
- [Memory & Disk Scanner - Check System Information](https://appshunter.io/ios/app/memory-and-disk-scanner-check-system-information/id923813218)
- [Folder Lock - Hide Photo,Video](https://appshunter.io/ios/app/folder-lock-hide-photovideo/id1015929512)
- [Password Lock Private Photo & Video - Don't Touch This](https://appshunter.io/ios/app/password-lock-private-photo-and-video-dont-touch-this/id1026958017)
- [Clean & Clear Duplicate Master Contact Cleaner - Monitor & Check Memory Disk RAM Free](https://appshunter.io/ios/app/clean-and-clear-duplicate-master-contact-cleaner-monitor-and-check-memory-disk-ram-free/id1027423435)

All apps by Phan Nhut: https://appshunter.io/developer/849063753

## Related topics

[memclean](https://appshunter.io/ios/topics/memclean) · [lite check](https://appshunter.io/ios/topics/lite-check) · [ram memory](https://appshunter.io/ios/topics/ram-memory) · [system syzer](https://appshunter.io/ios/topics/system-syzer)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-17.*