Voice your opinions Cancel reply. There is no ability for users to either deposit or withdraw bitcoin or altcoins from the app. Square is a huge financial technology company that includes many other services. But when transacting in Bitcoin, beware of large transfer fees when going back and forth between coins and other currencies and even transferring to other digital wallets. Similar to Robinhood, Coinbase offers an incentive when you sign up via an invitation. Launched in October of , they have the distinction of being one of the first United States-based platforms to allow for the quick and easy purchase of Bitcoin via a bank transfer. An ETF is an exchange-traded fund, which is much like a common stock but provides more functionality and security than trading crypto for the average Joe.