ibisPaint X, published by ibis inc., is an Android photo editor built around fast adjustments and ready-made export sizes.
Features of ibisPaint X
Edits stay non-destructive up to the point of export, so the original file on the device is left alone.
Build details
This build is version 14.0.11 Build 1400110054, the download runs to about 91MB, and it needs Android 5.0 and up.
The change in this release is listed as Prime Unlocked. Check the file against the scan result on this page before you install it.
Installing
Allow installs from unknown sources for whichever browser or file manager you used, open the downloaded file, and confirm the prompt. If an older copy is present and its signature differs, uninstall that first.