We don’t currently charge fees on currency exchanges, but Abra does generate exchange rate income on the spread between different currencies, which goes to cover our costs and generate a small profit for Abra. For instance, if you convert US Dollars to Bitcoin, or Ethereum to Ripple, there will be a small spread built into the exchange rate that you see on the app.
Please note that there may be other fees involved in certain transaction types, and they are always displayed to you before you confirm the transaction. We generally don’t make a profit on fees: we’re just passing through a fee that we incur. For more information on fees, please check our fees page.