GwenTracker is a collection tracker for The Witcher 3: Wild Hunt, a free-to-play action role-playing game. With this app, you can track your collection, see what cards you have and find out the value of each one. You can also add cards to your collection and get information on each of them, like their name, their location, their image, etc.

The application is very easy to use, so even if you don't have any experience with the game, you can easily get started. All you need to do is open the application, click on the "Create card" button and add the cards you want to your collection.