The Monster Tracker application does not collected any type of data.
The Monster Tracker application runs self contained on the device and does not share anything with other applications or devices.
The Monster Tracker application does save the tracker state data to memory to run the tracking properly. These elements include monsters, bosses, hit points taken, conditions place on monsters and bosses. Data of that nature. When the application is restarted, this stored data is accessed to queue up the application state properly to continue the game.
When the Monster Tracker application is deleted from a device, all stored data is deleted as well.
Once again, the Monster Tracker application does not collected any type of data.