Great app, I've been looking for a simple, bare bones budget tracking app.

I think you need to fix the flow for the first time users. If every first time user must add a currency, why not have first time user screen be the add currency screen? Also, the add currency screen should have suggestions. It wasn't initially clear that I needed to type 'USD' instead of 'dollar'. It also wasn't clear that the currency needed to be in capital letters. I had usd in lowercase and clicking the check mark did nothing. There should at least be feedback.

The app is great once getting past the first screen. Nice job.