This web-app is to track the cards your competitors have in the game of Colonist/Catan.(Trust me the game is extremely competitive and addictive) Use this app only when the game has become extremely competitive and winning at any cost is much necessary. Also use it then when you have lost 3 or more matches continuously.
The app can track at most 3 players (coz the 4th player is you and you already know your cards. Cmon man?!!?). Also because no one has the paid version of adding more than 4 players. Click on the add player button after which a dialog box will appear. Fill the required details and then click on the add player button. Do this until all the players that you want are added and then click on done.
From the layout you obviously would have guessed what to do so I aint explaining it. Just a small tip, the settlement, city and devcard button at the bottom - click on them when the player uses any of them in the game(just some neat tricks to save you some time ;)
The app is opensourced. You can find the code here at github. I am still a new developer so dont go crazy if you find some bugs. Report them at the issues section on the github page. Say hellp at riteshp2000@gmail.com