consumer-social
(3)
Candle
Candle is a San Francisco-based consumer social app that helps couples and close friends grow closer in about five minutes a day through one shared, random challenge - a question, debate, drawing or photo prompt, mini game, or local date idea. Founded by ex-Apple engineer Alex Ruber and ex-Twitter/Asana engineer Parth Chopra, the Y Combinator (Fall 2024) startup pivoted from an AI shopping tool and reached over a million users and a $1M+ annual revenue run rate within roughly six months of launch.
Mixy
Mixy is a mobile app that lets anyone make music mashups in seconds - blending the vocals of one song with the beat of another, no DJ skills required. Powered by the founders' own on-device AI models, it produces real-time mixes for free and auto-credits the source artists on every share. Founded in 2025 by Joe Kennedy and Jonah Siegle and backed by Y Combinator's Fall 2025 batch, Mixy grew to 1.5M users and 18M mashups within three months of launch, hitting #1 in Music and #3 overall on the App Store.
Partiful
Partiful is a free event-planning platform built for the way people actually invite their friends: a link sent over text, a customizable invite page, and effortless RSVP tracking. Founded in 2019 by Palantir alumni Shreya Murthy and Joy Tao, the New York company turned the unglamorous chore of organizing a birthday or a housewarming into something people genuinely enjoy. It became a Gen Z staple, was named Google Play's Best App of 2024, landed on TIME's 2025 list of the 100 Most Influential Companies, and now reaches users in more than 100 countries.