This app is not an official Minecraft product, not approved by or associated with Mojang.

App allow backup Minecraft PE worlds (only from EXTERNAL memory) to prevent accidental delete or lost.
Backup your world every day and you can restore them when something wrong happens.
Backup your world to USB key and your friend can restore them on own mobile.

READ PLEASE CAREFULLY:
1. It is not possible restore world, which wasn't before backed up. This is backup/restore application, not recovery.

2. Due Android memory model is impossible backup world created in Application memory

3. App backup only worlds in EXTERNAL memory - in Minecraft Settings->Profile->File Storage Location option External. MCPE Backup show and allow to backup only worlds CREATED AFTER switching to external memory.

4. App backup worlds into directory MCPEBaReSy in external memory (main phone memory), SD card and USB key when is connected before launch app. Therefore it required permission for use that memory at first time of run.

Warning:
This app allow delete and overwrite existing world, do it only when you have actual backup. Ready carefull question when you deleting or restoring world.

If you wish support development, buy please PRO version, which contain bulk backup all worlds at once, multiselect delete, backup to Google Drive and Dropbox.

If you have trouble with application, please feel free to contact me via email.