We have had several user interviews, created a couple of different wireframes, and attracted a group of potential end-users to A/B testing to discover what works best for our target audience.
First, we realized that users are often limited in time when they perform operations. For example, they want to quickly purchase crypto growing in price or sell it when the prices go down. So we decided to display only the preliminary information on the screen so that nothing would distract the users.
The dashboard displays your account information, balance, and the exchange rate of the chosen crypto to a dollar or another cryptocurrency. Next to the account balance, there are three buttons that allow you to deposit, send, or withdraw money. It is also possible to form an invoice directly in the app if you need to receive money from somebody else. The user can make a transaction in a few clicks and has immediate access to the history of all transactions.
We made the interface black and white because we wanted to focus the user's attention on the data in the interface. We also used additional colours, and with the help of colour coding, emphasized whether the transaction was successful or not.
Since most people prefer to carry out all operations on their smartphone, we have paid close attention to the mobile version of the application. In the mobile version, the user enjoys the same convenience as in the desktop version. They can immediately perform transactions and see the history of operations in one click.