Robinhood launched its mobile app before its website, making this a best stock trading app in its own right. Take a look at our selection of the best board games for teaching kids about money. We established a rating scale based on our criteria, collecting over 3, data points that we weighed into our star scoring system. But adding in its free stock trades, this app is one of the very best stock trading apps available today. The core features of the app are focused on tracking stocks you own and on your watchlist. Via a partnership with Morningstar, investing education ranges from basic to extremely advanced. Fees are slightly higher than average, and there is a trading frequency requirement to qualify for lower commissions.