If you are a previous owner of the pro version, but now have no access to the apk please email the developer to unlock advanced features.
Version 1.63.0 - Fixed possible photo orientation bug on resize
Version 1.62.9 - Added support for avi files
Version 1.62.8 - Multiple bug fixes
Version 1.62.1 - Added functionality to unlock an SD card so that delete and resize functions work again for removable storage in Android 5.0 and later