Pros Mobile apps now have all features, including international market data Streaming news alerts can be enabled on all your mobile devices, including Apple Watch Two-factor authentication available on request IdeaHub feature offers options trading ideas, updated throughout the trading day. The core features of the app are focused on tracking stocks you own and on your watchlist. Several brokers are taking innovative steps to make the process seamless, and we will be very excited to see which route becomes the industry standard over the next few years. The robo-advisor style app invests exclusively in ETFs to build you a diverse, broad portfolio in line with your investment goals. By Eric Rosenberg. TD Ameritrade gives you a choice of several mobile apps. Many of the online brokers we evaluated provided us with in-person demonstrations of their platforms at our offices.