I bought www.amount.app, now what?

Hey all,

I recently bought the domain name amount.app and am looking for ideas on what to build. If you could have any tool around the money/finance/budgeting space, what would it be? If your answer is interesting enough I will build it out and make sure you have a free lifetime subscription. Leave ideas down below!

Just a shot in the dark here.... an API / UI that can perform calculations for anything, combined with AI that has access to live data in lots of financial markets.