TD Ameritrade is a broker that offers an electronic trading platform for the trade of financial assets including common stocks, preferred stocks, futures contracts, exchange-traded funds, forex, options, cryptocurrency, mutual funds, fixed income investments, margin lending, and cash management services. The company was founded as Ameritrade in 1971.

TD Ameritrade gets the top spot because it offers something for everyone and excellent pricing. The basic TD Ameritrade Mobile app is great for beginners and casual stock traders who want to manage their investments on the go. Advanced and expert traders can use the upgraded thinkorswim mobile app for a professional-style experience.

You get access to both apps with a TD Ameritrade brokerage account, which has no minimum balance requirements and no fees to trade stocks and ETFs. The fully-featured apps combine important account management features and trading features regardless of which one you choose. “thinkorswim” also includes a live CNBC feed inside the app. 

TD Ameritrade offers both iPhone and Android apps for enhanced day trading. TD Ameritrade Mobile lets you trade stocks, options, futures and forex. You can manage your positions with helpful tools and features, including more than 300 technical charts and indicators. 24/5 trading lets you trade select securities 24 hours a day, 5 days a week. You can expand your list of securities to international markets and specific sectors. 

According to thebalance.com & benzinga.com