TradeUltra

Depositing and withdrawing funds is quick and easy. No long waiting times.

I've been using it mainly because I can watch several markets at once without flipping through tabs. The app works smoothly enough for trading when I'm not at my desk. However, their customer service could really use some work—it's tough to get quick help when something goes wrong. Good for the basics, but if you need support, be prepared to wait.