CastleFit

CastleFlexx

About this app

Relieve pain. Improve flexibility. Recover faster.

Castle Fit brings the full CastleFlexx experience to your phone. Follow guided stretch and mobility sessions built around the CastleFlexx device — designed to help treat the underlying causes of lower back pain, plantar fasciitis, tight calves, hamstring tightness, and limited movement.

Whether you are recovering from an injury, warming up before training, or building a daily mobility habit, Castle Fit gives you a clear, follow-along routine you can do anywhere.

🧘 On-Demand Stretch & Mobility Flows

Access dozens of instructional HD videos and relaxing flows, organized by your age, ability, and goals. Every mobility session is designed to keep you moving and pain-free.

💪 Programs From Trainers & Therapists

Follow guided stretch and strengthening programs created with leading trainers and therapists. Combine active and passive stretching for balanced, full-body recovery.

🛍️ Shop the Full Range

Browse the complete CastleFlexx device lineup and accessories, save favorites to your wishlist, and check out quickly and securely.

📦 Track Your Orders

Follow your order from purchase to delivery and get notified about new arrivals and restocks.

⭐ Trusted by Experts & Athletes

CastleFlexx is recommended by clinicians and chiropractors and used by professional athletes as part of their recovery. The device pairs stretching with core strengthening for a controlled, balanced experience.

Choose sessions that match how your body feels today, move at your own pace, and return to the flows that work best for you. Castle Fit is built to keep you mobile, flexible, and moving better every day.