Expense Sheet: This is where you can do all kinds of analysis/summarization of your expenses.
Why? Because Google Sheets is really good with numbers, but entering data from the mobile app is not very convenient. The idea is to make adding expense as simple as it can be. You should add them at the same moment you make a transaction. Make it like a habit.
Detailed analysis of the sheet can be deferred till you get an access to a computer. You can plot fancy charts at end of the month, set the budget for next week, etc. And I feel all of that need not necessarily be done on small screen.
Features
Built for the web - works cross-platform (iOS, Android, Mac, Windows, Linux).
Uses Google Sheet as a database to store expenses. Why?
Privacy. It's your personal data. It should belong to you.
Sheets is way better at handling numbers than me. You can do all kinds of analysis using graphs, formulas, etc.
I didn't want to write backend 🤓
Progressive Web App - Quick to load, can be installed as a standalone app on phone.
Easier sharing. Sharing expenses with someone (wife, family)? Share the expense sheet and all of your combined data belongs to the single sheet.
Backup. Didn't I tell you it uses Google Sheets to store expenses? Your data is always backed up on ⛅️