주식 계산기 (Stock Calculator) is a free Android application developed by SAPZARU. It falls under the category of Business & Productivity, specifically in the Finance subcategory. This app offers several useful features for stock investors, making it a valuable tool in the world of finance.

With 주식 계산기, users can calculate their investment returns, making it easier to track their profits and losses. The app also includes a feature to calculate the average purchase price, which is useful for investors who engage in "물타기" (averaging down) strategy. Additionally, the app provides a calculator to determine the upper limit price, helping investors set their selling targets.

Furthermore, 주식 계산기 offers quick access to popular financial platforms, such as Naver Finance and Daum Finance. This allows users to stay updated with the latest stock market trends and make informed investment decisions. Lastly, the app even provides a daily horoscope feature, adding a touch of fun to the overall experience.

Overall, 주식 계산기 is a comprehensive and user-friendly tool for stock investors. Its range of calculators and convenient access to financial platforms make it a valuable resource in the world of finance.