Autosave

My iPad has fairly low capabilities, and has far too many worlds. I fell as if other people are in the same situation as I.
As a result of this, the app crashes EXTREMELY frequently, and because of a desync in autosave between inventory and world, often items and structures are lost or duplicated.
I would like you to add an adjustable autosave feature for the entire world.
I am extremely frustrated, and am in the process of deleting most of the 255 worlds currently on there.
Thank you for your consideration.

-Block3y219, Frustrated at crashes