PSI Mobile is a free trading app for securities developed by PetroVietnam Securities Inc. It is available on Android and falls under the Business & Productivity category.

The app provides users with a platform to trade securities. It allows users to monitor stock prices, access market news, and view their portfolio. The app also features a trading simulator for users to practice trading without risking real money.

PSI Mobile has a user-friendly interface that is easy to navigate. It provides real-time updates on stock prices and allows users to place orders quickly. The app also allows users to customize their watchlist and receive alerts on their preferred stocks.

Overall, PSI Mobile is a useful trading app for those interested in securities. Its features make it a great tool for both beginners and experienced traders.