The metaphor seems to be like a pacer runner in marathons: If you run too hard in the beginning of a marathon you will blow up and fail, so runners follow a pacer at the speed they can actually maintain safely.
Note that they wont necessarily be slower at finishing the overall race.
Immich has an app that just needs to connect to an Immich server, which this would effectively be. It does the background sync, though I don't think it does the delete part.
The one caveat here is that, because Apple only really allows certain apps the privilege of running in the background without being interrupted or killed, I could never get the iOS version of Immich to reliably sync photos without having to manually open it and leave the app open until sync finished.
This was a few years ago, and was one of several "iOS breaks our crucial workflows" problems that motivated switching our last device over to Android, so the situation might be better now...but I've never had that problem with the Android client, so I know it's not an Immich problem.
You don’t need to run your app in the background. You can register your app as some extension to handle photo backups/cloud storage and you just setup a request to upload to a particular url when a new photo is added, iOS will background those requests and retry them and what not.
Thank you for that -- the workaround for multiple users sharing a set of photos plus their own stuff is the one thing that's kept my family away from adopting it.
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