This app tracks the real dividend yield in percentage of stock A. In financial reports, the annual dividend yield is expressed as the dividend per current share price (for the year in our case).
However, when investors buy a stock, the entry price was not the current price that the financial report uses and thus the dividend yield does not reflect the real dividend of the investor. It has to be noted that actual real dividends may not be increasing even though the reported published dividend yield was increasing over a period of 3 years.
This chart aims to show investors his/her real dividend yield based on the entry price which the investors buy the stock. Note that the stock price fluctuated between $1 - $5 and thus the input value could be in this range.