FET is a kink-oriented dating app available on iOS and Android (with an uncensored version on Android) that connects users based on shared fetishes and BDSM interests. The app uses swipe-based matching and allows messaging without requiring a paid account — a notable advantage over many competitors. Membership tiers are described as reasonably priced, and the app has decent user density in metropolitan areas. The quick registration process reduces friction for new users. The primary limitation is filtering: the app could offer more granular options for matching by specific kink or interest type. Best suited for kink and BDSM enthusiasts looking for a mobile-first dating solution.