If you push left button under the frame, you will spawn single mob of that type - right button will spawn plenty of them.
How to install:
- Download and unzip archive
- Then go to the any File manager
- And copy the map in to the "/storage/emulated/0/games/com.mojang/minecraftWorlds" folder.
- Once you've done, you can open Minecraft PE
- Map will be among your worlds