whataudoinghere (Free)
This is an interface extension for Android that has special utilities. It comes with comprehensive customisations that are only accessible when the app is running.
CPL Pixel Launcher gives you a variety of settings that you can apply to your phone once activated. You get a bunch of cool widgets that offer useful functions like timer and Google Task. They won’t work in the background unless you stay in CPL mode. Also, the adjustments you make with this app do not affect your regular settings.
Customised UI
Add more home screens
If you think the current interface on your Android is boring or doesn’t have that many modifications, download the launcher. Changes are reversible, so play with it as much as you want.