Robinhood, the stock trading app popular for its commission-free trades, has announced it is launching support for 16 cryptocurrencies. Users will be able to buy and sell any of these assets, also free of trading fees or commissions. This is in contrast to other USD-to-crypto gateways such as Coinbase, which charge fees on every transaction.
Source : https://bitsonline.com/robinhood-free-cryptocurrency-trading/