Happy Photo Exporter provides a nice and simple solution for backup, export or sync of your image data.
Universal App (iPhone, iPad; also Mac Version available).
SELECT all photos, videos, favourites
CHOOSE your target folder location. Folder can be a connected USB hard drive (if connected via USB-C or Apple camera kit), or local folder on your device, or any iCloud or other connected Cloud File Storage.
EXPORT all data in one go, with easy restart and smart incremental data transfer handling (the app detects if files are already on target and skips duplicates).
IMPORT the image files with App (rebuilding Live Photos, rebuilding images with edits, again avoiding duplicates) or copy them to other device. File format compatible to macOS, Windows and Linux.
Promise: Your data remains private - no ads, no hidden data transfers, no user data collection.
Enjoy! And happy to get your feedback.