I recently downloaded Time Warp Lite for Android. When I use the volume to change the time nothing happens, so I checked Time Warp. It wouldn't let me change or apply the Warp times because it says I need to visit the unlock screen for premium access.
Premium access means exactly what is says. You need to buy the application so you can unlock its full potential. Be very careful though, some applications are plain and simple scam schemes. If you plan to buy it, make sure it's legit.