The core features of the app are focused on tracking stocks you own and on your watchlist. Luckily, there are apps designed specifically for novice investors — the technology is simple to understand, yet the features are comprehensive. Some examples include clean tech or companies tied to the housing rebound, which are all current trends. This is a good option for investors who want immediate information, up-to-date quotes and breaking news. The best overall stock trading app experience comes from TD Ameritrade , one of the largest brokerage firms in the country. International travelers love that you can use your Schwab Investor Checking ATM card anywhere in the world with no fees.