The Knee App
Knee Pain Prevention Exercises
Only for iPhone
Free · In‑App Purchases · Designed for iPhone
iPhone
When it comes to knee health, random or generalized exercises rarely deliver lasting results. The Knee App takes a different approach — each program is designed around the specific muscle imbalances and movement patterns associated with your pain location.
Knee pain at different locations can often be driven by different movement patterns. For example, outer knee pain is often linked to inward hip rotation paired with outward lower leg rotation, causing some muscles to become overactive while others weaken. By pinpointing where it hurts, The Knee App identifies the patterns likely contributing to the issue and provides programs to address them.
HOW IT WORKS
Pick the program that matches your pain location. Each program uses a strategic, reverse-engineered approach:
Phase 1 — Foam rolling to calm overactive muscles, followed by targeted stretching to restore flexibility in tight areas. These aren't random stretches — each one addresses a specific imbalance linked to your pain location.
Phase 2 — Strength exercises that activate weakened muscles and reinforce healthy movement patterns. You'll build the stability needed to stay active and prevent re-injury.
Phase 3 (coming soon) — Equipment-based exercises for users ready to progress to higher-level training. Alternative exercises will always be available if you don't have equipment yet.
WHAT MAKES THE KNEE APP DIFFERENT
→ 5 targeted programs based on where your knee hurts — outside, inside, above, or below the kneecap, plus a general Knee Health and Mobility program
→ 3D animated exercises with synced voiceover guidance in 5 languages: English, Spanish, Arabic, Chinese, and Russian
→ Every exercise is rooted in movement science — designed to correct imbalances, not just stretch and hope
→ Phased approach that builds progressively from release to strengthening
→ Shot from multiple angles for complete clarity on form and posture
FEATURES
→ Detailed 3D animations with voice-guided instructions — follow along hands-free
→ Save your favorite program for quick access
→ Available in 5 languages — no other knee app offers this
→ Designed for prevention and self-care
WHO THIS IS FOR
Whether you're a runner dealing with recurring knee pain, someone who wants to stay active without discomfort, or you're looking to take better care of your knees before problems start — The Knee App gives you a clear, science-based plan to follow, anywhere, anytime.
Questions? Reach out at keith@motionapps.us.
Disclaimer:
The information and exercises provided in The Knee App are intended to support users in managing knee health but are not a substitute for professional medical advice, diagnosis, or treatment. We strongly recommend users seek a doctor's advice in addition to using this app and before making any medical decisions related to knee pain or pain in general. The Knee App is not liable for any harm resulting from the use of this app. By using this app, you agree to assume all risks associated with its exercises and content.
New Playlist Feature
We've added a new exercise-to-exercise flow to help you move through your exercise programs in a more enjoyable and efficient way. A progress bar has also been added so you can clearly see what you've completed and what's left.
Exercise Completion Tracking
Completed exercises are now marked with checkmarks that persist between sessions. See your progress at a glance and clear it when you're ready to start fresh.
UI Polish
Cleaner program headers, improved spacing, and refined navigation throughout.
The developer, Keith Krugh, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Contact Info
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Keith Krugh
- Size
- 70.6 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- One workout $0.99
- Copyright
- © 2026 3D Medical LLC. All rights reserved.