Folders are chaotic by default

[ildar]

Settings have several paths and those are spread all over the filesystem. I suggest fixing defaults for that to be sub-/sdcard/Android/data/$APPID

[k3b]

• thumbnails may be shared by different apps. On very old android devices with low internal memory (i.e. my android-4.2 tablet) they can be put onto sd-card.
• (mapsforge-) open-streetmap offline maps are shared by different apps (i.e. c:geo) and should there fore be outside the app folder

The database specific and logging specific files could default to /sdcard/Android/data/$APPID/

Since i currently have 3 different $APPID-s ( APhotoManager (last fdroid release), APhotoManager.dev (work in progress( and APhotoManager.a10 (for #155 ) i prefer them using the same database and logging for these.

[ildar]

I agree that ../Andoid/data/$APPID/ isn't the best place for those kinds of data. But the main issue: the app creates too many folders in SDCARD root. IMHO best choice is subfolder-ing standard Android folders like: /sdcard/Documents or /sdcard/Download or /sdcard/DCIM (for cache).