Free Currency Converter API

The api address is here. It returns 176 currencies prices together with country name, country code, currency name and currency price. The base currency is USD.

http://www.mycurrency.net/service/rates

There is also Free country flag API. Just replace the country code.

http://caches.space/flags/{countrycode}.png

Example:

http://caches.space/flags/sg.png sg

http://caches.space/flags/us.png us