CPU vs Nurunuru Checker
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
CPU
Read full descriptionHide full description
Get a clearer view of your iPhone with CPU-G, a streamlined system information and performance monitor designed for quick, easy checks. LIVE PERFORMANCE Track current CPU usage with automatic updates. See active cores, architecture, estimated processor details, GPU information, and Metal support in one convenient dashboard. MEMORY AND STORAGE Review memory usage, available memory, total capacity, storage usage, free space, and file system information. Simple progress indicators make it easy to understand your device status at a glance. BATTERY AND THERMAL STATUS Check battery level, charging status, Low Power Mode, estimated capacity, and the current thermal state of your device. DETAILED DEVICE INFORMATION Explore useful specifications for your display, cameras, network connections, controllers, hardware model, operating system, connector, and uptime. CPU-G includes: β’ Live CPU usage β’ Processor and GPU information β’ Memory and storage statistics β’ Battery and thermal status β’ Display and camera specifications β’ Network activity and wireless details β’ Connected controller information β’ Device model, OS, and uptime CPU-G presents technical information in a clean, readable interface, making it useful for troubleshooting, device checks, performance awareness, and anyone curious about the hardware inside their iPhone. Important: Some hardware specifications cannot be read directly through public iOS interfaces. Values labeled βestimatedβ are inferred from the detected device model and may vary by model, region, configuration, or operating system. CPU-G does not perform benchmark testing and does not claim to measure exact hardware clock speeds or battery health.
Nurunuru Checker
Read full descriptionHide full description
Is your iPhone or iPad really displaying smoothly? Even on a "ProMotion 120Hz" display, the screen does not always run at its top speed. Nurunuru Checker shows your device's actual refresh rate and rendering, measured on the device itself. β Free - Live FPS / refresh rate measurement See the frame rate actually shown on screen, with average, minimum and maximum FPS, frame time and jank count. β Premium features (unlock everything for 24 hours by watching one ad, or permanently with a one-time purchase) - ProMotion Min/Max Test Ask the display for its highest and lowest refresh rates and compare the smoothness with a moving bar. - Motion Blur & Response Test Check motion blur (ghosting) and response with moving objects. - Sustained & Throttling Test Graph FPS over time to see performance drops caused by heat (throttling). - Full-screen Check Patterns Find dead pixels and uneven colors with solid colors, gradients and grids. - Bonus: Hoshimori Rinka Wallpaper Save a wallpaper of Hoshimori Rinka from 3810 Production's Information Management Dept. to Photos. β Rinka Mode Choose "Rinka Mode" in Settings to recolor the whole app in Rinka's colors and show her illustrations across the screens. β Recommended for - People using a ProMotion iPhone or iPad Pro - Checking the display of a new or used device - Anyone who wants to see their device's smoothness in numbers and with their own eyes β Pricing Free to use. Some features are unlocked for 24 hours by watching one ad. The one-time in-app purchase "Unlock All Features" unlocks everything permanently and removes ads. On a new device, use "Restore purchase". Privacy policy: https://3810.pro/privacy-policy/nurunuru-checker Contact: https://3810.pro/contact
Screenshots
Verdict
The clearest difference is in-app purchases: CPU at none against Nurunuru Checker's 1. CPU also leads on update cadence (daily vs every 10 days) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Nurunuru Checker sells 1 one-off in-app purchase. CPU asks for nothing beyond the download.
CPU ships an update daily, Nurunuru Checker every 10 days. The most recent releases landed on October 19, 2026 and October 23, 2026 respectively.
| Parameter | CPU | Nurunuru Checker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily β better | Every 10 days |
| Ads | Yes | Yes |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 β better | 17.0 |
| Further details β not scored | ||
| Size | 5 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Renya Miyahara | 3810 Production |
In-app purchases
CPU
No in-app purchases
Nurunuru Checker
- Unlock All Features$1.99









