Definitely not the best app or brokerage to use. Many hidden fees that cancel out the "free trading ." Updated 2022: besides the hidden technicalities that can swiftly get you out of your positions or remove funds without consulting, their interest margin is being increased ahead of the "government " increase. Every account over 25k is monitored and the logarithm they have will eventually catch up to you. Lastly if they cannot control something they either have "schedule" maintenance, error,etc