Robinhood: Robinhood is a popular commission-free stock trading app that allows users to buy and sell stocks, options, and cryptocurrencies without any trading fees. It has a user-friendly interface and offers features such as real-time market data, customizable watchlists, and a simple investing approach.

TD Ameritrade: TD Ameritrade is a well-known brokerage firm that offers a robust trading platform with a range of tools and resources for stock investing. Its mobile app provides features like customizable watchlists, advanced charting tools, and educational resources for investors.

ETRADE: ETRADE is another popular stock trading app that offers a range of investment options, including stocks, options, and ETFs. It provides a user-friendly interface, real-time market data, and features like portfolio tracking and customizable alerts.

Webull: Webull is a commission-free stock trading app that offers features such as real-time market data, advanced charting tools, and paper trading for practice. It also provides access to extended hours trading and offers a social community for users to interact and share trading ideas.

Charles Schwab: Charles Schwab is a well-established brokerage firm that offers a comprehensive trading platform with a mobile app that provides features such as stock trading, options trading, and access to research and analysis tools. It also offers a wide range of investment options, including mutual funds, ETFs, and retirement accounts.

Please note that the availability and features of these apps may vary depending on your location and local regulations. It’s important to thoroughly research and understand the fees, features, and risks associated with any stock trading app before using it for investing purposes.