SQLite Forum

Jumbled image tiles?
I would guess that you're corrupting the PNG data on either import or export, and that some of these apps have more tolerant PNG decoders than others.

You're going to have to give a lot more detail if you want more than guesses, though. For instance consider sharing a single-row SQLite DB containing a tile that you find doesn't display correctly in some apps. Then we can at least help you test the file data's compatibility.