A currency tools.
[*] Fixed API
[*] Fixed Permissions
Because I'm using free plan of openexchangerates.org and currencylayer.com, and the data updates hourly, so the add-on also updates every hour.
A currency tools supporting 98 currencies. Max 9 targets could be counverted to in one time. Source data includes openexchangerates.org, currencylayer.com and google.com.
Web version is here: