Coamy is the everyday app for couples, on both your phones: shared expenses, a common calendar and lists, synced live. Made for exactly two, every screen knows who the other is. Log an expense in seconds and see who owes whom. Events for you, for them or both, with reminders. Lists you tick off together. iPhone and Android, 8 languages. Free, no ads, no tracking; Coamy+ adds stats, budgets, receipts and widgets.