A free app for Android, by Quarter Bits.

Find out which League of Legends Mystery Skin will drop next with the unofficial Mystery Skin Simulator app. This app provides access to all current droppable skins and champions. You can narrow down the search by changing the settings or filter. You can select skins and champions you want to drop from.

To prevent dropping the same skin more than once, this app removes the ones that have already been unlocked from the list. Hence, you can keep track of the ones you already have and focus on unlocking the ones you don’t.

Download this now on your Android device.