Here are some ModPE Scripts that I have written. I run an Android device (Kindle Fire HD 7) with BlockLauncher, although most (if not all) of these mods should work for iOS. ModPE is made by treebl and BlockLauncher is made by 500ISE
See the corresponding .txt file for each mod's information
Current Mods:
Smelting Touch - Tapping blocks replaces with smelt block, or returns smelt item.
Simple Commands - Using chat commands you can place unobtainable blocks.
Redstone - [Development] Will allow for basic redstone constructions.
Fire Row - [Development] Will shoot a row of fire out from the user.
More Items - [Waiting] Just waiting more ModPE support :P
SkyBlock - [Development] Will allow for many of the mods involved with SkyBlock