증권통 SK증권 is a free finance app developed by Tomato Group for Android users. This app is designed to provide a quick stock trading experience using SK Securities accounts. The app integrates with the main StockTong app, and users can quickly place orders by clicking the order button on the detailed page of the StockTong app.

The app's main features include stock trading (buying, selling, amending, and canceling orders), account inquiry (balance, reservation, and deposit), holding balance (evaluation profit and loss, profit and loss rate, current price, evaluation amount, and average price), settings (display the selling screen first, automatic input of current price of order price, etc.), moving the selected stock to the interest list by clicking the stock name, and updating the current holding balance to the StockTong interest list.

It is important to note that the app can only be used with the StockTong app, and users must have an SK Securities account and a public certification for trading. Users can contact the StockTong customer service for app-related inquiries, while SK Securities customer service is available for login and trading-related inquiries.