This app helps you to calculate what will be your average stock price after you decide to invest more on it.
This app is a pure calculator and does not get tied to any particular stock market or currency. Its simple plain numbers!
It will require your current stock investment price and how much more you are willing to invest, thus giving you instant result of what your stock average price would end up being.
Note that you can either mention how much more money you are willing to invest or even just mention how many more shares you are ready to buy again, and the averaging logic will take care of calculating it for you.