Comment on
Old iPad on the hallway wall as a photo frame - SnapFrame, a Home Assistant add-on I wrote
Reply in thread
A cracked screen and a tired battery matter a lot less once it's a frame - mine hangs on a wall on a charger and never runs on battery. If the battery is swollen rather than just weak, don't leave it charging unattended though.
Nothing gets installed on the tablet either, it's just Safari in fullscreen pointed at the add-on, so an iPad that can't take app updates anymore is fine.