Skin-Tracker is an app that allows Fortnite Battle Royale players to browse all skins and cosmetics available in the game. The app features 3D models, gameplay clips, and ingame videos of leaked skins, Chapter 3 Season 3 Vibin' skins, and much more. Users can create a profile, follow other users, put skins on their wishlist or mark them as owned, inspect 3D models of countless skins, browse leaked and unreleased skins, track the current Battle Pass progress, test pickaxe, glider, and emote sounds, rate and comment skins, and more. However, the app does not sell or gift skins.

To access the app, internet access is required as it needs to retrieve images, information, and 3D models. The app receives regular updates with bug fixes and feature additions to improve its services for users. However, it is important to note that the app does not sell, trade, gift skins, or let users exchange skins or accounts. Portions of the materials used in the app are trademarks and/or copyrighted works of Epic Games, and the material is not and is not endorsed by Epic Games.

Users can upgrade to Pro or above to get extra features such as selecting their favorite skin as a profile picture, creating 10 custom cosmetic lists, and having a Pro badge on their profile. Overall, Skin-Tracker is a helpful app for Fortnite Battle Royale players who want to browse and keep track of all the skins and cosmetics available in the game.