한국투자증권 eFriend Smart is a comprehensive trading app that offers various services such as stock/futures/options trading, investment information, banking (account transfer), trading service applications, IPO trading, and stock simulation trading.

The app provides easy login with options such as a 6-digit password, fingerprint, iris scan, and FACE ID. It also offers new order functions such as quick slider order, server automatic order, and touch order.

The app provides new investment information such as stock tags (#) information, industry vs. stock, and theme vs. stock. It also offers various chart indicators and functions that are linked with HTS (eFriend Plus).

In addition, the app provides an efficient screen layout with horizontal screens for the current price, order, favorite stocks, and account menu. You can also perform various transactions such as banking (immediate transfer, reservation/automatic transfer settings), and trading service (credit/loan) applications.

Overall, 한국투자증권 eFriend Smart is a user-friendly trading app that provides a wide range of services to its users.