Expense Tracker is a tool created using Ruby-on-Rails for the back-end and ReactJS/JavaScript for the front-end.
It is meant to demonstrate the quickness of React's updating of state and JavasScript's asynchronous web requests.
The app idea was conceived in an attempt to help people who haven't made the full transition to online banking yet and prefer to do their banking using check-ledgers. It is an electronic check-ledger book with full CRUD capabilities as demonstrated in the gif.