Split the trip,
not the friendship.
Make a group for the event, drop the link in the chat, log what you spent in any currency. When it's over, Splitsies says exactly who pays whom.
One link, everyone in
Share a private invite link or invite by email. People only see their own groups.
Any currency
Log an expense in euros, shekels or yen — Splitsies converts to the group currency.
Fewest transfers
Closing the group produces the shortest possible list of payments.