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Dive into the intricate world of BJJ with world-class instruction

Known for his highly technical, submission-oriented style of BJJ, Karel (Silver Fox) Pravec has created a one-of-a-kind digital experience that enables the user to focus on their own individualized progression.

Whether you’re a novice eager to learn the basics or a seasoned practitioner refining your technique, this app offers the following:

  • Both Gi and no Gi styles
  • Hundreds of videos organized by positions, functions, and submissions from both defensive and offensive aspects
  • Customize your in-app experience based on your game, current skill level, goals, and preferences
  • LIVE classes hosted by Silver Fox showcasing advanced insights, techniques and strategies. Engage with Silver Fox in real-time, chat, ask questions and get immediate feedback

Let's Roll! Download Now


Every student has a different game. Through this one-of-a-kind app, you have access to hundreds of Fox’s instructional videos to create a homepage that specifically focuses on your game. Content is being added weekly and if the new technique applies to you, it will automatically be added to your game and you will be notified to check it out. Over time, your BJJ journey will evolve, and the app will evolve with you. Ready to train with new techniques?

3 Phones with the Silver Fox App
Fox No Gi Roll

Silver Fox's Philosophy and Techniques

Karel Pravec is a 4th degree Brazilian Jiu-Jitsu Black Belt and one of Renzo Gracie’s first students. His unique perspective and teaching style aims to make Brazilian Jiu-Jitsu exciting and accessible for everyone at every age and skill level. With this app, you’ll learn many of his most popular techniques from one of world’s top BJJ instructors.

Get Better FasteR

Access hundreds of instructional videos from Silver Fox to improve your BJJ skills on and off the mats. Enhance your game with easy-to-search technique and strategy videos. Whether you want to refine your grappling techniques, learn new submissions, or develop a more effective defense, this app offers a convenient platform to elevate your BJJ skills — anytime, anywhere.

Fox No Gi Roll
Fox No Gi Roll

Go Live With The Fox

Tune in to weekly live classes where users can go live with the Fox. Ask technical questions, learn new training strategies, troubleshoot specific issues, and more. Join us for an immersive, learning experience to develop your BJJ skills.

Let's Roll! Download the App Today!

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5 Phones