It's a panel to be updated about currencies in the world in steps like EUR to USD to BRL with possibility to add a tax or taxes to help how cost something or if is a good moment to buy another currency.
The first idea is add this panel only to Google Chrome Extension, maybe I go to Apple ecosystem and Android ecosystem, but before this I will add all wireframes, prototypes and designs to guide what I spect to do and what I need learn.
If you have some idea, go to issues to understand the point we doing.