Underhook: BJJ & Jiu Jitsu

Underhook: BJJ & Jiu Jitsu

Grappling training & practice

9 ratings
7 reviews
Free
In-App Purchases

Details

Released
July 22, 2026
Updated
October 30, 2026

Features

Underhook: BJJ & Jiu Jitsu video #1 for iPhone
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Underhook: BJJ & Jiu Jitsu screenshot #6 for iPhone
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Underhook: BJJ & Jiu Jitsu screenshot #9 for iPhone
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About

This app offers daily decision-training exercises for Brazilian Jiu-Jitsu practitioners. It provides a structured learning path with various formats to reinforce mat training and improve understanding of grappling positions and strategies.

✓Structured learning path from white to blue belt
✓1,000+ scenario questions
✓Multiple learning formats (lessons, quizzes, chats)
✓Daily 5-minute training sessions
✓AI rival for realistic practice
✓Streak and progress tracking
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What's New in Underhook

1.2.23

October 30, 2026

New: rolls on your path. Every few lessons, a two-minute roll with a partner from the gym, and win or lose, you move on. Your first roll now comes right after lesson 1.

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Subscriptions & In-App Purchases

Underhook Pro Annual

All cycles, sparring, unlimited stamina

$49.991 Year
7 Days trial
How to cancel Underhook subscription ⁉️

User reviews

Bjj control

Love this app. Gamification makes learning more fun and keeps me motivated

BJJ people, this is for us!!!!

Finally something different from endless BJJ videos 😄 Love the way Underhook makes learning feel simple and organized. Great job!

Your Jiu-Jitsu Coach, Anytime

Love this app! It makes learning Jiu-Jitsu easy, fun, and really enjoyable.

Easy and fun learning

Started BJJ recently and this app is exactly what I needed. There’s so much to remember after class, and Underhook makes it much easier to understand and review techniques. Really enjoying it so far! 🥋

Very useful for beginner 100%

BJJ is not only about physicality, but about mental work as well. An average amount of training is enough to develop your physical abilities, but not enough to fully develop your mental game – obviously, unless you’re a professional who trains for several hours every day. But with Underhook, I can train my brain even while I’m waiting for an appointment to start. And oh boy, it’s beautiful and easy to use! 10/10.
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Developer apps

FAQ

Does Underhook have ads?

No, Underhook is ad-free. It offers a free version with core content and a Pro subscription for enhanced features.

What is the pricing for Underhook Pro?

Underhook Pro offers monthly and annual subscription plans, priced at $7.99/month and $49.99/year respectively. Both plans include a 7-day free trial.

Can I cancel my Underhook Pro subscription?

Yes, subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple Account settings.

What age rating does Underhook have?

Underhook is rated 4+ by Apple, making it suitable for a wide range of users.

How often is Underhook updated?

The latest version of Underhook is 1.2.23, and it was last updated on October 30, 2026. Updates ensure new content and feature improvements.

What languages does Underhook support?

Underhook is fully available in English, Portuguese, Spanish, and Ukrainian, catering to a global user base.

What are the key benefits of Underhook Pro?

Underhook Pro removes daily limits with unlimited stamina, unlocks the AI rival 'Kat', and provides a second streak freeze, offering a more comprehensive training experience.

Does Underhook replace mat time?

No, Underhook is designed as a supplement to mat time, not a substitute. It aims to make your mat hours more effective by reinforcing concepts learned in class.