Sprint.AI vs Capacity

Sprint.AI allows users to accurately self-time their sprints, without the presence of a coach or the use of a external timer. Powered by our neural network, trained on over 100,000 data points, the timer will automatically start and stop whenever it detects that you have started/ended your sprint! Beyond timing, our sprint-form analysis model provides in-depth data on your sprint form, including body angles and joint annotations. Using the power of Sprint.AI, drop your PR's and boost your fitness! NOTE: While the self-timing feature works well when holding your device in your hand, it is recommended to use a phone arm sleeve.

Build your capacity to move. Start your 7-day free trial. Capacity is a guided stretching and mobility app designed to help you move more comfortably, one session at a time. Whether you’re loosening up in the morning, resetting after hours at a desk, preparing for a workout, or making time for a full-body stretch, Capacity gives you clear routines that fit into everyday life. Choose the difficulty that feels right today and adjust it as you move. Capacity offers progressive variations for each movement, helping beginners start comfortably while giving experienced users room to challenge themselves. MOBILITY AT YOUR LEVEL - Choose from Easy, Medium, Hard, and Advanced movement variations - Adjust your difficulty during a session - Change movement times to suit your body and schedule - Pause, skip, or take extra rest whenever you need it - Follow clear instructions and visual movement guidance ROUTINES FOR REAL LIFE Explore guided routines for: - Morning mobility - Upper- and lower-body stretching - Posture resets after sitting - Dynamic warm-ups - Full-body movement - Travel and in-flight stretching - Quick sessions when time is limited Pin your go-to routines, save favorites, and browse by focus area or session length. CREATE YOUR OWN ROUTINES Build a mobility practice around what your body needs. Choose movements from the library, set their duration, arrange them in any order, and select the variation you want to perform. Save, edit, and repeat your custom routines whenever they fit your day. SEE YOUR PROGRESS Capacity helps consistency feel rewarding without turning movement into another source of pressure. - Track your stretching time - Build and maintain a daily streak - See how many unique movements you’ve completed - Review your activity history - Unlock achievements as you progress - Celebrate every completed session BUILD A ROUTINE THAT STICKS Choose the days you want to move and set reminders for the time that suits you. Short, approachable sessions make it easier to begin—and easier to return tomorrow. SIMPLE AND PRIVATE Capacity doesn’t require an account. Your workout history, routines, preferences, and progress are stored locally on your device. Mobility isn’t about forcing your body into extreme positions. It’s about expanding what feels comfortable, staying consistent, and building confidence in the way you move. Build your capacity. Move more freely. Download the app and start your 7-day free trial. Get full access to the library, progress tracker and custom routine builder. Terms of Service: https://www.capacitystretching.com/terms Privacy Policy: https://www.capacitystretching.com/privacy