Immich. Come for the photo backup, stay for everything else because it's awesome.

Like everyone is saying, Immich.

But keep an eye on updates because it is under active development so breaking changes tend to happen every once in a while.

I use syncthing to keep all my documents and pictures synced between my devices.

Immich has a setting that does automatic photo backup over WiFi, I use the android app as a Google photos replacement. You can choose however many folders on your phone as you want (I just do camera roll) and enable only backup over WiFi and it backs up all the photos in original quality. I self-host the server on my Synology with a reverse proxy (can't forward ports at my current place due to cgnat) so I can access it from anywhere.

I believe the app is cross platform so the iPhone version should be identical to the android one.

Immich has completely replaced Google Photos for me, love it!

My only bugbear is that it is updated very frequently (what a nice problem to have!) which in my case requires a manual once-over of my docker-compose file every time in case there are breaking changes.

Nextcloud's instant upload feature?
Whenever I take a picture or screenshot it's uploaded there.

Nextcloud might be overkill if that's the only feature you need. I've never used the more involved stuff like chat or document editing, just sync.

I use Immich, and I love it.

I think right now it is a throwdown between:

• Nextcloud Photos
• Immich
• Ente Photos

Nextcloud. Works super well.

I've been using folder sync pro for ages and ages https://play.google.com/store/apps/details?id=dk.tacit.android.foldersync.full

It basically syncs a folder from your phone to a folder on your home servers share.

I think it was paid.... But it's been years so I couldn't tell you.

I have all my photos synced to iCloud and have Apple Photos running on my Mac with the option to “always download originals” enabled. Then, I run a daily backup of my Mac’s photo library to my NAS. For this, I’m using CCC at the moment but I’m planning to switch to restic.

I've been using Ente Photos, and PhotoPrism and I've been liking Ente pretty well. Little bit more work to get things setup and going but I've been enjoying it for the last few months