Comparison

CPU vs KeepLit

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

Head to head
About

CPU

This app provides detailed insights into your device's hardware and real-time diagnostics. It also offers tools to optimize storage by compressing media and cleaning contacts, along with a comprehensive suite for testing device sensors and network functions.

Highlights
  • Comprehensive device hardware insights
  • Real-time diagnostics and sensor testing
  • Video and image compression
  • Duplicate contact cleanup
  • Junk mail and spam message filtering
  • Network diagnostics tools
Features
Read full description

CPU-X is an all-in-one device information, hardware monitoring, and system diagnostic tool for iPhone and iPad. It provides real-time insights into device performance, temperature, hardware status, and network conditions with a clean and efficient interface. All data is processed locally on your device. No data is collected or uploaded. 1. Comprehensive Device Information: Device model and system information, CPU architecture and performance details, GPU information, memory (RAM) usage, storage usage and available space, battery health and charging status, device temperature monitoring (CPU and battery temperature), network configuration and connectivity status, sensor availability and access status. 2. Real-Time System Monitoring: CPU usage monitoring, memory usage tracking, storage analysis, network speed and latency testing, system status overview. 3. Device Temperature Monitoring: CPU temperature monitoring, battery temperature monitoring, charging temperature tracking, thermal load and performance impact analysis. 4. Widgets and Quick Access: Home screen widgets, real-time device status widgets, battery CPU and storage shortcuts, quick system overview panel. 5. Display and Refresh Rate Tools: High refresh rate detection (60Hz, 120Hz, ProMotion), screen refresh rate testing, display performance analysis, picture in picture support for floating monitoring view. 6. Advanced Device Diagnostic Tools: Sensor testing including accelerometer gyroscope magnetometer barometer altimeter device motion and pedometer, connectivity testing including GPS compass Bluetooth NFC iBeacon, audio and haptics testing including microphone speaker vibration and haptic feedback, display and touch testing including brightness multi-touch and screen color test, camera testing including camera and flash test, network tools including ping traceroute DNS lookup speed test and network scanner. 7. Privacy Protection: CPU-X does not collect store or transmit any personal data or non-personal data. All information remains fully local on your device and under your control. Contact: For feedback or support contact miaozhi.ai@gmail.com

About

KeepLit

Features
Read full description

KeepLit keeps your screen on — without interrupting your music, podcasts, or videos. Other screen-awake apps stop your audio when activated. KeepLit doesn't. Your media keeps playing. Your screen stays on. No floating windows. No conflicts. WORKS IN THE BACKGROUND Start a session and switch to any app. KeepLit doesn't need to stay in the foreground — it quietly keeps your display awake while you cook, read, follow a tutorial, or wait in a queue. LAUNCH INSTANTLY Start a session from your Home Screen Widget or Control Center. No need to open the app. NO SUBSCRIPTIONS. EVER. One-time purchase unlocks everything. Free trial included so you can try it first. PERFECT FOR: · Following recipes with messy hands · Reading long articles or documents · Keeping a map or boarding pass visible · Monitoring live scores or dashboards · Waiting in online queues for tickets · Any time your screen turns off too soon PRIVACY FIRST No camera. No microphone. No tracking. No account required.

Screenshots

CPU4 screens
KeepLit4 screens

Verdict

The call

The clearest difference is ads: KeepLit at none against CPU's shown. CPU's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. CPU sells 1 one-off in-app purchase and KeepLit sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CPU ships an update fortnightly, KeepLit every 9 days. The most recent releases landed on October 20, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level
CPU versus KeepLit: the parameters behind the verdict, then further details
ParameterCPUKeepLit
PriceFreeFree
Rating4.7 (111 ratings) — better—
Positive reviews61.1% of reviews—
Number of ratings111 — better—
Update frequencyFortnightlyEvery 9 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size170 MB1 MB
Age rating4+4+
DeveloperCHENGDU MIAOZHI TECHNOLOGY CO., LTD.ChihHung Chang

In-app purchases

1 purchases

CPU

One-time1
  • Lifetime Premium$5.99
1 purchases

KeepLit

One-time1
  • Premium$4.99

Questions

Is CPU free?
CPU is free to download, with in-app purchases available.
Is KeepLit free?
KeepLit is free to download, with in-app purchases available.
Do CPU or KeepLit have ads?
CPU shows ads; KeepLit does not.
Which is updated more often, CPU or KeepLit?
CPU ships an update fortnightly, and KeepLit every 9 days. Most recently, CPU was updated on October 20, 2026 and KeepLit on October 11, 2026.

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