DuoSpend Budget

Track shared expenses by project and instantly see who owes what. Built for two, offline by default, and available with a simple one-time Pro unlock.

DuoSpend Budget answers one simple question: who owes what to whom?

The app helps couples track the expenses of a shared project without turning it into a monthly budgeting app, a bank-connected tool, or a group expense tracker. Each project stays focused, with its own budget, expenses, and balance.

DUOSPEND BUDGET IS:

• built for 2 partners, not for groups;
• organized by project: trip, wedding, moving, renovations, baby project;
• centered on a balance that updates instantly between the two of you;
• local-first, with no account, no ads, and no tracking;
• able to share projects manually between two iPhones using DuoSpend project files;
• an iPhone app available in French and English.

FEATURES:

• create and edit projects with a dedicated budget;
• add, edit, and delete expenses in a few taps;
• split each expense 50/50 or with a custom ratio;
• see the updated balance instantly to know who should reimburse whom;
• share a project using a DuoSpend project file;
• import a new project or update an existing one from a received file;
• open DuoSpend project files from iOS;
• complete settings with light, dark, or system theme, purchase restore, data deletion, and an about section;
• Home Screen widgets and PDF export with DuoSpend Pro.

DUOSPEND PRO:

• 1 free project to use DuoSpend Budget in real conditions;
• DuoSpend Pro is a one-time €6.99 purchase that unlocks unlimited projects, widgets, and PDF export;
• DuoSpend Pro supports Apple Family Sharing;
• no subscription.

PRIVACY: Your projects and expenses are stored locally on your iPhone. DuoSpend Budget does not collect personal data, does not use BeAbot servers, and works offline.

When you choose to share a project, DuoSpend Budget creates a file that you decide to save or send using the services provided by iOS. Project sharing remains manual: DuoSpend Budget does not automatically sync projects between the two iPhones.