Nextcloud Cospend is a group/shared budget manager. It was inspired by the great IHateMoney. You can use it when you share a house, when you go on vacation with friends, whenever you share money with others. It lets you create projects with members and bills. Each member has a balance computed from the project bills. This way you can see who owes the group and who the group owes. Ultimately you can ask for a settlement plan telling you which payments to make to reset members balances. Project members are independent from Nextcloud users. Once you've got access to a project (as a guest or as a Nextcloud user), there is no restriction on what you can add/edit/delete. Projects can be accessed and modified by people without a Nextcloud account. Each project has an ID and a password for guest access. MoneyBuster Android client is available in F-Droid and on the Play store.