SCRUFF is an international social application for men seeking men that runs on iOS and Android devices. The app allows users to upload profiles and photos, and search for other members by location and shared interests. Users can directly message other users or they can use the app's “Woof” feature, which allows users to express interest in another user's profile. The app is free to download. Users can opt to purchase a paid membership, Scruff Pro, to access additional features.