Fitness Startups funded by Y Combinator (YC) 2026

Founded in 2014, Bellabeat is a data-centered wellness femtech company behind some of the most fashionably designed tech-powered wellness products and one of the fastest-growing wellness subscription services for women. Throughout the years, Bellabeat built the go-to wellness brand with a compelling ecosystem of solutions and services focused on women’s health. The success of the Leaf and Ivy wearables enabled the brand to expand to international markets and kickstart industry discussions on the importance of innovating in the design and development of tech products. Today, Bellabeat is leading the market shift with hyper-personalized holistic wellness offerings aligned with a women’s menstrual cycle.

Napkin Math is the food journal for real people. Stop counting calories, get personalized insights and realistic goals. Easily keep a beautiful food journal, get deep insights on your data with AI, and share your table with friends.

The mission of HYBRD is to take world-class coaching and make it universally available. Health data has never been more abundant. GPS watches track pace and heart rate, wearables monitor sleep and recovery, and voice logging has made it easier than ever to capture weightlifting and HYROX. And yet most athletes are still following static PDF plans they found online, or "adaptive" apps that fall apart the moment cross-training enters the picture. Existing tools feel disappointing because they don’t actually know your goals and constraints, so they can’t do anything meaningful with the data they collect. HYBRD can. We aggregate your wearable data, fill the gaps with a simple AI logger, and use that complete picture to build personalized training programs from the best coaches in the world, like Alex Viada, who coined the term "hybrid athlete." From there, the HYBRD agent keeps you on track, adjusting your schedule around weather, travel, and fatigue as you progress. Everything you'd get from a $500/month coach, at a 50x lower price. Founded in 2024 by WHOOP and AWS alumni, HYBRD is built by hybrid athletes. Join us for a workout every Monday morning in San Francisco and Boston.

Cora is a mobile app that provides personalized fitness coaching using health and wearable data. Cora is built for people who want structure and guidance in their training, but don’t benefit from generic programs or static plans. By connecting to Apple Watch and other health data sources, Cora understands a user’s current fitness level and adapts coaching, insights, and training plans over time. With Cora, users get: - Coaching and insights based on real health and wearable data - Adaptive training plans that evolve with fitness level - Nutrition tracking with smart macro targets based on your goals - Clear guidance on training, recovery, and progress over time - A simple way to understand where they are and what to do next

Adapted is an AI physical therapist for athletes. Tell it your injury history, your sport, and your goals - it builds a personalized program to rehab and prevent injuries, bulletproof your body, and improve mobility and flexibility. No generic exercises. Just training and prehab that actually adapts to you. Available now on the iOS App Store.

Overlord knows everything about you (location, Mac data, health data, +dozens more), and can take actions (block Mac/iOS/Android, text/call you, text your friends, take your money) to force you to stay on track with your habits.

The DROP by Rex.Fit is an AI wearable camera that automates nutrition tracking using computer vision. It has garnered more than 93k USD in preorders (~450 units) since its launch last month. The nutrition estimation and recommendation tech behind the DROP is already integrated as an API for fitness chains, generating hundreds of thousands of dollars in yearly revenue for them. The DROP is built by brothers, sports nutritionists and computer vision engineers from the Swiss Federal Institute of Technology (ETH Zurich).

SnapCalorie is the world’s first app where you can take a photo of ANY meal and get an accurate calorie count. It takes seconds to use and is more accurate than a trained nutritionist. The team previously co-founded Google Lens, Cloud Vision API, and published a CVPR paper demonstrating the first algorithm to outperform a professional nutritionist at calorie counting.

The Breakaway is a personal performance coach for cyclists, with the product, team, roadmap and vision to extend to be the mass market coaching platform for anyone tracking their performance. As more and more people realize that exercise is the key not only to personal performance, but to health and wellness, the inevitable future is that everyone will have an AI driven personal performance coach & companion in their pocket. The Breakaway will be that Coach.

Fitia is an AI meal planning and calorie counter app. Our users receive personalized weight loss or muscle gain plans that adapt based on their data, progress, and preferred foods.

You can buy or share our bicycles and e-bikes for health, fitness, and mobility. Today, our bikes can be found in hundreds of communities across Bangalore, Mumbai, Delhi NCR and Pune.

All in one platform for online and in-person classes, video on-demand, courses and website hosting.

With FightCamp you get access to world-class boxing and kickboxing trainers, studio-quality equipment, and performance-tracking technology — all from the comfort of your home. The key to a FightCamp workout lies in our Punch Tracking technology — we allow you to measure every strike, deliver real-time stats and fuel your competitive side.

Weilos is a safe community for people to share their fitness updates to inspire others and receive support. Users view real body transformations and healthy photo updates from other dieters on a streaming newsfeed. They can then post themselves to receive support and tips from other like minded people. The app also has a special camera tool so users can take perfectly lined up progress photos to visualize their smallest improvements.