One of about 5 apps I’d recommend to every iPhone user, regardless of price.
I downloaded and configured this app about 3 years ago. Since then I have opened it less than 5 times. But all this time, even after reboots or getting a new phone, it has been silently and reliably backing up my photos in an organized way to a WebDAV location in the cloud.
Ask yourself the question: would I want to ever sync a photo from my phone to somewhere else?
If the answer is yes, get this app. It has all the options you’d ever need. It works flawlessly. It’s solid, it doesn’t spam you or bug you or hinder you.