Gemini Trust Company, LLC (Gemini) is a cryptocurrency exchange and custodian that offers customers the ability to buy, sell, and store digital assets. On an open market, all users can trade cryptocurrency and fiat currency. Gemini Exchange users can send and receive USD from and from their bank accounts. From the "Market" tab, choose the cryptocurrency you want to convert. Tap "Trade," then "Convert." Under "To," select the cryptocurrency you want to receive from the conversion. Enter the quantity to be converted and then tap "Review order."