Robinhood optimized its brokerage service for millennials, so it has a very intuitive and well-designed mobile trading platform. Furthermore, you will have news from prominent third-party providers, like Financial Times or Reuters. Turn off the TV and teach your kids about money and the stock market, and let them buy shares or give them a stock gift card to engage them in a portfolio with a growing value. Cons The self-directed investor may be annoyed by the constant push to engage a financial advisor Limited options trading capability No forex or futures trading. Economic calendar shows you all important events coming. But adding in its free stock trades, this app is one of the very best stock trading apps available today. Best for Your Kids: Stockpile.