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Randori

Randori

Your training, finally counted

1 ratings
1 review
💪 Health & Fitness
⚽ Sports
Free

Details

  • Released
  • Updated

Features

Developer

Christopher Crosley
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About

Track your heart rate and effort during grappling martial arts like jiu jitsu. Log training sessions, connect with partners, and forecast belt progress. Your data syncs with Apple Fitness and Health, and insights are processed locally for privacy.

✓Heart rate and effort tracking
✓Workout logging to Apple Fitness/Health
✓Belt progress forecasting
✓Connect with training partners
✓Curated curriculum and technique analysis
✓Local data processing for privacy
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What's New in Randori

2.0.1

September 14, 2026

Randori 2.0.1 — class over, counted. • Situation systems in Learn: fourteen full pages, each one situation from one side — the route that solves it, what to do when it breaks, tonight's drills with a start, a success and a reset, and the safety rules — every step cited to a coach's own video at the second • Class over: a moment after every tap-out with one of the sport's paintings, a word for the work, and your session as a card you can share as an image • The heart tile asks for a monitor when none is paired, and the strap sheet ends in our recommendations, each sensor painted in the house style • The belt ladder in Learn, aired out: one row per belt, your own marked CURRENT, situations as one card • The sport paintings on the launch plate, the settings rows, your profile and your card • A subscriber's settings show the subscription, not the price • Fixed: the first three sessions' gift after a fresh install, the photo cropper for your profile picture, Bluetooth states told apart

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User reviews

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Nice Brazilian jiu jitsu app

I’ve been using Randori for a few months to track my heart rate. I can see the progress in my conditioning and my technique being more efficient vs trying to muscle everything.

The curated videos are especially useful for me to learn how to defend things I get caught in during sparring. Haven’t used it much yet but connecting to my friends from class is a plus.

I’d recommend this app to anyone that is trying to take their Brazilian jiu jitsu to the next level.
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FAQ

What martial arts is Randori designed for?

Randori is built for jiu jitsu but also works for judo, wrestling, and any grappling art where a wearable device might not survive a round. It focuses on tracking effort and progress in these specific disciplines.

How does Randori track my workouts?

Randori uses a Bluetooth heart-rate sensor to measure your real heart rate minute by minute during training. This data is then colored by effort level, from easy to maximum, and synced to Apple Fitness and Health.

Can I connect with my training partners on Randori?

Yes, you can connect with training partners, coaches, and professors by trading profile cards. They can see your sessions, posts, and promotions, fostering encouragement and community without strangers or follower counts.

Does Randori have ads?

No, Randori is ad-free. The app emphasizes privacy with no ads, no tracking, and no server holding your personal training data.

How does Randori help with belt progression?

Randori tracks every belt and stripe you've earned with their dates. Based on your training data, it provides an honest range for what's next in your progression, though your professor ultimately decides your rank.

Is my training data private with Randori?

Yes, your training data is kept private. Workouts are stored in Apple Health on your device, and your rank, posts, and profile are managed via your iCloud, shared only with invited partners. The suggestion engine for technique analysis also runs entirely on your iPhone.

What is the update frequency for Randori?

Randori was last updated on August 31, 2026, with version 1.1. This indicates a recent update, suggesting ongoing development and support for the application.

What devices does Randori support?

Randori is supported on the Apple Watch and iPhone. This allows for convenient tracking during workouts and access to your training data on the go.