Comparison

CPU vs Nurunuru Checker

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

Head to head
About

CPU

Features
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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 β€œestimated” 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.

About

Nurunuru Checker

Features
Read 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

CPU2 screens
Nurunuru Checker4 screens

Verdict

The call

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Nurunuru Checker sells 1 one-off in-app purchase. CPU asks for nothing beyond the download.

UpkeepUpdate frequency

CPU ships an update daily, Nurunuru Checker every 10 days. The most recent releases landed on October 19, 2026 and October 23, 2026 respectively.

Scorecard3 real differences Β· 3 level
CPU versus Nurunuru Checker: the parameters behind the verdict, then further details
ParameterCPUNurunuru Checker
PriceFreeFree
Update frequencyDaily β€” betterEvery 10 days
AdsYesYes
In-app purchasesNo β€” betterYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 β€” better17.0
Further details β€” not scored
Size5 MB19 MB
Age rating4+4+
DeveloperRenya Miyahara3810 Production

In-app purchases

None

CPU

No in-app purchases

1 purchases

Nurunuru Checker

One-time1
  • Unlock All Features$1.99

Questions

Is CPU free?
CPU is free to download, with no in-app purchases.
Is Nurunuru Checker free?
Nurunuru Checker is free to download, with in-app purchases available.
Do CPU or Nurunuru Checker have ads?
Both CPU and Nurunuru Checker show ads.
Which is updated more often, CPU or Nurunuru Checker?
CPU ships an update daily, and Nurunuru Checker every 10 days. Most recently, CPU was updated on October 19, 2026 and Nurunuru Checker on October 23, 2026.

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