What's the best free iOS app for creating spreadsheets, sharing them with others for collaborative editing, and tracking expenses without needing a paid subscription?

Google Sheets is an excellent free iOS app for creating and sharing spreadsheets, perfect for tracking expenses and collaborating with others. You can easily create new spreadsheets or import existing ones from Excel. Sharing is straightforward: simply invite collaborators via email or generate a shareable link. Multiple users can edit the same sheet simultaneously, with changes visible in real-time. For expense tracking, you can create columns for different categories, input expenses, and use formulas to calculate totals and generate summaries. Google Sheets automatically saves your work to the cloud, ensuring your data is always backed up and accessible from any device. It's intuitive interface and powerful features make it a solid choice for both personal and professional use, all without requiring a paid subscription. The app also integrates seamlessly with other Google services, such as Google Drive and Google Docs, enhancing its versatility and convenience. To get started, download the app, sign in with your Google account, and tap the '+' button to create a new spreadsheet or import an existing one.