CSGO stats is a simple application to show you a complete game stats that allows you to track how do you perform in the game and maybe help you to improve.
To use CSGO Stats you only need to download the program and run it, nothing more.*
Go to your Steam profile > Games and then “Game personal data” on CSGO, select “Competitive matches” load all your history and save the webpage. (Ctrl + S). Once you have saved your history file open the app and click on the “Load” button, select your file and there you go.
You don’t have to worry for anything the app does not store permanently any personal data, and does not make any connection or any shady stuff (you can review the code).
You can save all the charts by clicking the save button.
Export the data to a .csv file by clicking the save button so you can easily work with it.
*If you are a windows 10 user you should be ok but if not, CSGOStats requires .NET Framework 4.6.1 at least.