Do my friends need the app?
No. They open your invite link and join in their browser, with no account. Friends on Android can join the same way.
Who can change the plan?
The person who started the group keeps the plan. Everyone else can suggest adding, removing or moving places, and the organiser takes the ones they want.
Which currencies can we split bills in?
Any. Each bill keeps the currency it was paid in, and the totals use live exchange rates.
Can we keep a common fund?
Yes. One person holds the group's money, everyone tops it up, and bills paid from it come out of it. Pawsport tells everyone when it's running low.
What if someone leaves the group?
They stay in the money, so what they paid and what they owe still add up. The organiser can also remove someone and decide whether they can rejoin.