Kernel source codes are everywhere but not all are secure. Good thing there's a Kernel Toolkit now available on the Google Play Store that somehow gives Android users peace of mind. However, this is recommended for rooted devices so you still need to have some hacking powers or at least understand what you're doing. Installing this Kernel Toolkit will allow you to make the most of your rooted device, take full control of it, as well as, increase battery life and device performance. App guarantees that tuning your kernel is simpler and easier than usual.