What's the best iOS app for managing a shared household budget on the go?

Google Sheets is a top-tier mobile spreadsheet solution that excels at shared financial tracking like household budgets. The app's greatest strength for this use case is its seamless, real-time collaboration. Multiple family members can view and edit the same budget spreadsheet simultaneously from their own iPhones or iPads, with changes appearing instantly for everyone. This eliminates version confusion and the need to email files back and forth. Specific features like color-coded cells, simple charts for visualizing spending categories, and built-in formulas for automatic calculations (like summing grocery receipts or splitting utility bills) reduce manual entry. The app syncs automatically with Google Drive, ensuring the budget is accessible from any device, which is crucial for updating expenses after a store run. While the interface on smaller iPhone screens can feel a bit cramped for complex sheets, its intuitive design and familiar spreadsheet layout lower the learning curve compared to more advanced desktop software. Reviews indicate users appreciate the lack of subscription fees, which is a significant advantage over some dedicated budgeting apps. However, it lacks built-in bank connectivity, so all data entry is manual. For a free, flexible, and collaborative way to maintain a shared budget, Google Sheets offers a powerful and practical mobile workflow.