Black Belt 2.2 preview. New features and App Store availability are coming soon.
For iPhone and Apple Watch
Your private
jiu-jitsu journal.
A personal journal for adult practitioners. Log every class, see your training rhythm and keep your belt journey.
Coming soon to the App Store.
Everything you train, in one place.
A journal built around the mat: what you trained, how hard, and how it adds up.
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Log every session.
Type, place, rounds, effort, who taught it and what you worked on, in one form.
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See your training rhythm.
Mat hours, your consistency heatmap, streaks and hours per week.
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Know when you train.
The training clock shows your mat hours by weekday and start time.
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The work shows.
Your own rank history, from earlier kids belts to black, with every promotion and stripe.
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Keep your match record.
Your camp, weigh-in runway and every match result, event by event.
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Earn awards.
Milestones from your own journal: sessions, hours and belts.
Apple Health and WHOOP
Your heart rate and recovery, beside every class.
Connect Apple Health, WHOOP or both. Heart rate, HRV, sleep and recovery show up next to your sessions, and WHOOP workouts land in Train for you to review. Both are optional, and the readings stay on this iPhone.
Location
Tag where you trained.
Choose your academy on the map as you log a session, and see its place again in the session detail. Location is optional.
Session detail
Every class, in context.
See who taught it, your rounds and effort, and optional heart rate from Apple Health beside the session. Missing data stays missing.
Training around
Keep learning through an injury.
Note what you are training around, study instead of rolling, and keep a healed history when you are back on the mat.
iCloud journal backup
Move to a new iPhone with your journal.
Off by default. Review what’s included and choose to back up your sessions, belts, templates and competitions to iCloud Drive. Apple Health and WHOOP data are never included.
Your journal stays yours.
Your journal is stored on this iPhone. Connections are optional and explained before iOS asks.
Read the privacy policyNo account
No sign-up, no public profile, no feed and no hosted journal database.
Health data stays on device
Apple Health and optional WHOOP readings stay on this iPhone and are never in your iCloud journal backup.
Works offline
Once access is set up, logging works without a connection.
Yours to export
Export your journal as readable CSV files from Settings › Journal.
Questions
Will Black Belt be free?
Black Belt will be free to download. Full access will be Black Belt Pro, bought inside the app through the App Store, with a 7-day free trial for eligible subscribers. Nothing is sold on this website.
Do I need an account?
No. There is no Black Belt account, profile page or feed. Your journal lives on your iPhone.
Do I need Apple Health, WHOOP or an Apple Watch?
No. Each one is optional. The journal works on its own, and every connection is explained before iOS asks.
Does it work offline?
Yes. Once access is set up, logging sessions works without a connection.
Can I move to a new iPhone?
Yes, with the optional iCloud journal backup. It starts off; you choose to enable it during setup or in Settings. Apple Health and WHOOP data are never in it, so you reconnect them after restoring.
Can I record my earlier kids belts?
Yes. Adult practitioners can record their own kids-belt history through to the adult belts. There are no child profiles or parent-managed journals.
Can I get my data out?
Yes. Export your journal as CSV files from Settings › Journal. Study and return-checklist entries require wellness consent, off by default for each export.
