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Expert's Review

"Inside the guts of CPU"

Reviewed by / May 04, 2012

CPU Spy is a simple app that allows you to monitor your CPU usage

This is just an app for monitoring, you can't modify nor your CPU frequency either any other parameter. You can check how much time CPU spends in each frequency state. Your CPU isn't always at highest performance: its frequency varies depending on the process you're executing. For example, you're in lower CPU frequency when airplane mode than over WiFi. You're in the lowest CPU frequency levels when, what's more, display is off.

CPU Spy shows 6 states: 1000Mhz, 800Mhz, 400Mhz, 200Mhz, 100Mhz and deep sleep. What's more it sows how many time you spend in each frequency and how much it represents out of the total. It also shows total state time and kernel info. You can reset/restore timers anytime.

In summary, an useful tool to keep track of what's going on your device's heart. Recommendable.

Tags: cpu spy, cpu spy apk, cpu spy deep sleep, cpuspy, cpu deep sleep, cpuspy deep sleep, cpuspy apk, cpu spy source, cpu sleep, deep sleep cpu.

Developer's original description available here
This is a simple app to display the time the CPU spends in each frequency state. This can be a useful tool in diagnosing battery problems or tweaking your over-clock settings.

It also displays the current kernel information.

Source: https://github.com/bvalosek/cpuspy
XDA Developers thread: http://forum.xda-developers.com/showthread.php?t=1011497

Recently changed in this version

-Display total state time
-Massive code cleanup
-Fix duration overflow bug
-Removed read-as-root attempt when unable to access states file due to instability
-Better tablet support (still work to do, though)

Lists with CPU Spy

Some lists where this application appears: Reviewed by Emmanuel Lund.

Screenshots CPU Spy
View bigger - CPU Spy for Android screenshot
View bigger - CPU Spy for Android screenshot
Comments and ratings for CPU Spy
  • (74)

    by Subhomay Ghosh on 12/04/2014

    Not working on my HTC Desire x

  • (74)

    by Tariq Khan on 05/04/2014

    Must have app

  • (74)

    by Xiaozhang Zhu on 01/04/2014

    Simple but steady

  • (74)

    by Justin dela cruz on 15/03/2014


  • (74)

    by Otabek Kholikov on 14/03/2014

    It does what it should do

  • (74)

    by Paul de Bruijn on 12/03/2014

    Would be nice to have a graph that's shows can speed over time

  • (74)

    by Jaka semban on 09/03/2014