Billy  Android App - playslack.com , Billy is a hassle-free, ad-free app to keep track of shared bills and group expenses. Perfect for group trips, the app visually suggests who should pay next, in order to keep the balance gap small.Create an event, add people (supports couples and custom weights) and you&#x27;re good to go !Add a new operation in seconds. You can modify previous operations or add new participants at any time. The &quot;settle&quot; button shows simplified debts, and lets you track…