Live Bank Transactions + Google Sheets. Links accounts with Plaid to track transactions and balances over time with some helpful templates. All the data is yours in your own spreadsheet to do with what you want.
Revenue is somewhat seasonal. Most revenue comes in Q1+Q2 and trails off in Q3+Q4. Used by individuals and small businesses that love spreadsheets and want to manage their own finances.
This is a Next.js app hosted on Render.com, which is a managed VPS offering similar to Heroku. BudgetSheet is also of course completely reliant on Google Cloud though with Google Apps Script and the Workspace Marketplace where it is listed.