This is application to look for the causal process that slowing your phone.
You only tap either button which "Slow" or "Not Slow" and you can find the causal process.

The principle is easy.
App compare processes that be run when your phone is slow and processes that be run when your phone is now slow.
And display a process that be only run when phone is slow as "Suspicious Processes".

The process (or application) of the cause that your phone becomes slow may be found in that.

* This app may not necessarily identify a cause. However, this would be useful for narrow down the causes.