Hand over without hours of explaining – and without anyone seeing too much.
Invite them with a link, and they get a narrowly scoped view – just the assigned children, nothing else.
In an emergency, the right number is easy to lose track of.
One tap is enough for the emergency call, plus there's a task checklist and a log for the evening – both work without a signal too, and sync later by themselves.
After a booking, nobody's quite sure how it went.
Both sides get notified, and “My bookings” keeps the carer's dates in view – all at no extra cost.