If you dont know what is ROOT, don't download it!
This is a App for manual editing sysctl variables.
* Manual editing of the variables.
* Automated editing of the variables.
* A short instruction to the variables.
* Restore default settings.
* Making your Smartphone faster.
* Longer battery lifetime.
* Linux <3
* Its Free <3
(it's desinged for HTC Explorer, but it works on other devices)