PhotoPA for iPhone, iOS 17 and later
If something is not working, or you want a feature, write to info@akaterra.com. A real person reads it.
In your photo library, where they already were. PhotoPA remembers which photos are in a collection and shows you the originals. It never makes copies, and it never recompresses them.
That photo is no longer in your library. Open the collection's editor and swipe the row away to remove the slot.
PhotoPA needs permission to read your library. Settings, PhotoPA, Photos, then allow access. The app will not show anything until it can read the photos you chose.
Tap Restore purchases on the same screen. The purchase is tied to your Apple Account and works on any iPhone you sign in to.
Not without Face ID, Touch ID or your passcode. Turning on Face ID for a collection means it will not open without you. Leaving a collection is free; it is opening one that is guarded.
Yes. PhotoPA makes no network connections at all, so a hall with no reception changes nothing.
Open the collection's editor and drag the rows. The first one is the cover, and the photo you land on when you open the collection.