> To gain 100% trust make it open source.

I think until they've got a customer base and a proven model a happy median is to put the code in escrow and agree to give the source to paid licensees should the project be abandoned/more than x months without updates/whatever.

Very surprised no one has mentioned Synology yet. This has been done. And it's awesome!

I currently have a self-hosted google photos clone and I only paid for the hardware. Highly recommend.

Synology's Moments is ok, but it has issues. Not mobile friendly at all, can only create one shareable link per album, and others can't contribute their pictures to your album. Those are the biggest issues in my experience.

I'm still not satisfied, but photoprism seems to move into the right direction here. Digikam os great of you want everything on a single machine. Shot well has other advantages. None of them have a good solution to immediately and automatically import any photo taken on your phone.

Use apps like PhotoSync and it will upload automatically when photos are taken.