Fitness

Fitness Startups funded by Y Combinator (YC) 2026

September 2026

Browse 14 of the top Fitness startups funded by Y Combinator.

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Bellabeat
Y Combinator LogoW2014
• Active • 134 employees • San Francisco

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.

fitness
health-&-wellness
femtech

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HYBRD
Y Combinator LogoF2024
• Active • 5 employees • Boston

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.

health-tech
consumer
fitness
digital-health
ai

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Cora
Y Combinator LogoW2024
• Active • 3 employees • San Francisco

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:

consumer
fitness
ai-assistant
ai

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Adapted
Y Combinator LogoW2024
• Active • 2 employees • San Francisco

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.

fitness
digital-health
health-&-wellness
artificial-intelligence

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Overlord
Y Combinator LogoW2023
• Active • 2 employees • New York City

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.

mental-health-tech
consumer
fitness
digital-health
productivity

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rex.fit
Y Combinator LogoW2023
• Active • 2 employees • San Francisco

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).

hard-tech
computer-vision
consumer-health-services
fitness
artificial-intelligence

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SnapCalorie
Y Combinator LogoS2021
• Active • 5 employees • New York City

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.

computer-vision
fitness
ai

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The Breakaway
Y Combinator LogoS2021
• Active • 6 employees • Truckee, CA 96161, USA

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.

fitness
health-&-wellness

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Fitia
Y Combinator LogoS2021
• Active • 26 employees • Lima, Peru

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.

consumer
fitness
health-&-wellness

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Tilt
Y Combinator LogoW2021
• Active • 12 employees • Bengaluru

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.

hardware
consumer
fitness
india
mobility

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Arketa
Y Combinator LogoS2020
• Active • 55 employees • New York City

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

saas
fitness
health-&-wellness

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FightCamp
Y Combinator LogoW2016
• Active • 64 employees • Los Angeles

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.

hardware
fitness
gaming

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FitnessAI
Y Combinator LogoW2020
• Acquired • 1 employees • New York City

fitness
artificial-intelligence

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.

fitness
health-&-wellness