The US stock market is one of the strongest in the world, and with the world’s biggest companies listed on the New York Stock Exchange, the US economy has become a hotbed of global investment activity. With over half of the global financial market represented by US stocks, it’s no wonder that so many investors are seeking to get in on the action. Depending on your level of experience, you can download apps that make investing in US stocks easier.

TD Ameritrade, a prominent name in the robo-advising space, offers two powerful mobile apps for investors. The TD Ameritrade investing app is designed to mimic its desktop counterpart, with price alerts and news feeds. The app is also capable of managing trades and syncing watch lists. The app has won the No. 1 Investor App award for five consecutive years.

Webull: The company’s investing app lets you trade unlimited stocks for free, and has a desktop version as well. This app also has extended hours, allowing users to invest at night or on weekends. The app offers personalized market analysis and a number of investment tools, such as portfolio building tools. In addition to this, the app lets you choose between various types of accounts, such as IRAs and 529 college savings accounts.

Robinhood: A free app that allows users to buy and sell stocks, and also allows them to manage stop-loss and limit orders. The app offers basic research tools and is easy to use, but you may want to pair it with other investing apps if you’re serious about building a systematic investing strategy. Robinhood supports trading in stocks, options, fractional shares, cryptocurrencies, and even bitcoin.