The application includes standard textures for mobs, objects, blocks. And also you can upload your own textures for all types.
DISCLAIMER: This is an unofficial application for Minecraft Pocket Edition. This application is not associated in any way with Mojang AB. Minecraft Name, Minecraft Mark and Minecraft Assets are all property of Mojang AB or their respectful owner. All rights reserved. In accordance with http://account.mojang.com/documents/brand_guidelines