Dear Morpher development team,
I've only recently discovered Morpher and am very enthusiastic about what Morpher can do and what it can do in the future. In order to help improve the Morpher I would suggest to specify that the user is buying in MPH when they attempt to buy or sell a stock. I was initially confused whether I had to enter the amount of the 'stocks' I wanted or whether I had to enter the amount of MPH I wanted to use to buy a stock.
The confusion this causes is quickly resolved once a user starts a trade and they see that the amount of MPH that was put in was also subtracted from their cash balances. It doesn't take much to put 2 and 2 together, but in order to streamline the user experience I would suggest that it's specified next to the input field. Perhaps it's also a possibility to offer users the ability to buy exactly one stock unit of value of the stock in MPH along with the current feature of buying a stock by inputting the amount of MPH you want to spent on a stock.