> Surely it's not next cloud anymore, considering the comments here.

I have been testing Nextcloud for backing up photos from my family members' phones. Wouldn't recommend.

The sync on iOS works well for a while, then it stops working, then some files are "locked" and error messages appear, or it just stops syncing, and the only way I find to recover is to essentially restart the sync from scratch. It will then reupload EVERYTHING for hours, even though 95% images are already on the server.

Note that in my use-case, the user never opens the app. It has to work in the background, always, and the user should not have to know about it.