Do not use this app. you can never move to another app. You can upload all your pictures but you can only download them 1 by 1. Literally one by one. If you have 200 photos. You will rather stick to that app. If you select more than one photo, you will only have the option to archive it and not save them on your device. I am currently exporting photos from the web. Use gallery go instead, product by Google but store your photos locally. Back them up on drive