Top charts. The core features of the app are focused on tracking stocks you own and on your watchlist. With roots in Silicon Valley, this brokerage began offering online trades using the Internet via America Online and Compuserve. So, if you leave a small lump sum of money in your account over a long period of time, the fee could eat up your balance, even if the market is performing well. In fact, the design is so sleek that fans of this app compare it to iOS 7’s native Stocks app.