Cragly
Climbing Log & Stats
Sports & Outdoors
Ossly
BJJ Journal & Tracker
Track every roll, submission, and belt promotion without ever losing your data
Ossly is a BJJ training journal for iPhone that logs rolls, submissions, and belt promotions for jiu-jitsu practitioners of any belt. It’s an iPhone app made by Develak.
- Age
- 4+ years old
- Category
- Sports
- Price
- Free In-app purchases
- Languages
- 44 EN · FR +42
- Requires
- iOS 17+ iPhone · iPad
- Size
- 6.1 MB
- Version
- 1.0
Screenshots
See Ossly in action
iPhone
iPad
Overview
What is Ossly?
Ossly is a jiu-jitsu training journal built for iPhone, designed around one promise: it never loses your data. Every roll, tap, and belt promotion you log becomes part of a permanent record of your BJJ journey.
Whether you train gi, no-gi, or both, Ossly lets you capture sessions in seconds, see what you tap to, and follow your belt journey from white belt to black, all without needing an account.
Read the full App Store description
Ossly is the jiu-jitsu training journal built on one promise: it never loses your data. Log every roll, every submission, every belt — and keep your whole BJJ journey safe, for years.
Tired of a tracker that eats your sessions, corrupts your history, or locks you behind a login? Ossly is local-first, backed up to your private iCloud, and yours to edit anytime. No account required.
Track every session in seconds
- Gi and No-Gi on the same day, drilling or sparring
- Rounds, mat time, intensity — plus rest and injury days
- Submissions and taps, given and taken, by technique
- A full technique library, plus your own custom moves — edit or delete anything
Know what you tap to
- "What you land" — the submissions you hit and the taps you take, as a clean donut and breakdown
- Finishing rate, submissions per hour, and trends over any time range
- Taps by the partner’s belt — because tapping a black belt isn’t the same as tapping a white belt
Your belt journey
- Every promotion on one timeline, white belt to black — with promotion photos
- Adult and full kids/teens belts, every stripe
- Competitions: divisions, results and match notes
Built to last
- Private iCloud sync across iPhone and iPad, in real time
- Automatic PDF & CSV export — your data is never locked in
- Apple Health integration and home-screen widgets
- A calm, premium design, fully localized in your language
Free forever
Logging your training — and your data — are never behind a paywall. Ossly Pro unlocks advanced stats (taps by partner belt, trends, calendar), the enriched belt timeline, competitions, technique videos, automatic backup and widgets.
Oss. Your mat life, remembered.
—
Ossly Pro is a monthly or annual auto-renewable subscription; the annual plan includes a 7-day free trial. A lifetime one-time purchase is also available. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours prior to the end of the current period. Manage or cancel anytime in your Account Settings. Any unused portion of a free trial is forfeited when you buy a subscription.
Privacy Policy: https://develak.com/privacy-policy/
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Highlights
What can you do with Ossly?
Ossly is a jiu-jitsu training journal for iPhone that logs rolls, submissions, and belt promotions, with private iCloud sync and no account needed.
Log Every Session Fast
Record gi and no-gi training, rounds, mat time, and intensity, or mark a rest or injury day.
See What You Tap To
View your submissions and taps as a clean donut chart, with finishing rate and trends over time.
Full Technique Library
Pick from a complete technique library or add your own custom moves, and edit or delete anything anytime.
Track Your Belt Journey
Follow every promotion on one timeline, from white belt to black, with photos and every stripe.
Log Competitions
Record divisions, results, and match notes from every competition you enter.
Sync and Export Freely
Back up your data to private iCloud in real time and export it anytime as PDF or CSV.
Who it’s for
Who is Ossly for?
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BJJ Practitioners of Any Belt
Anyone training gi or no-gi who wants a clear, lasting record of rolls, submissions, and belt progress.
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Competitors
Grapplers who compete and want to log divisions, results, and match notes alongside their regular training.
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Parents of Young Grapplers
Parents tracking a child’s or teen’s belt journey through the kids and teens belt system, including every stripe.
-
Anyone Who Has Lost Training Data Before
Grapplers who want a journal that stores data locally first and backs it up to their own private iCloud.
How it works
How does Ossly work?
From “Log a Session” to “Back Up and Export”, in 5 steps.
Log a Session
After class, note gi or no-gi, rounds, mat time, and intensity, or mark a rest or injury day.
Record Submissions
Add the submissions you landed or the taps you took, tagged by technique and by your partner’s belt.
Check Your Stats
Open the “What you land” view to see your finishing rate, submissions per hour, and trends over time.
Follow Your Belt Timeline
Add promotions with photos and watch your belt journey build from white belt to black.
Back Up and Export
Let Ossly sync to your private iCloud and export your full history as PDF or CSV whenever you like.
In depth
Ossly, in detail
How does Ossly track submissions and taps?
Ossly tracks every submission you land and every tap you take, tagging each one by technique. The “What you land” view turns this into a clean donut chart with a full breakdown, so you can see your go-to submissions at a glance.
Beyond the chart, Ossly calculates your finishing rate and submissions per hour, and shows how these numbers trend over any time range you pick. Taps are also broken down by your partner’s belt, since tapping a black belt carries different weight than tapping a white belt.
How does Ossly keep your BJJ training data safe?
Ossly is local-first, meaning your training data is stored on your device before anything else. It also backs up in real time to your own private iCloud across iPhone and iPad, and it works without requiring an account.
You can automatically export your full history as PDF and CSV files whenever you like, so your logged sessions, submissions, and belt history are never locked into the app.
What does “Ossly Pro” unlock?
Logging your training and your data are never behind a paywall. Every roll, submission, and belt you record in Ossly stays free to log, forever.
“Ossly Pro” unlocks advanced stats such as taps by partner’s belt, trends over time, and a calendar view, along with the enriched belt timeline, competition logging, technique videos, automatic backup, and home-screen widgets. It’s available as a monthly or annual subscription, with a 7-day free trial on the annual plan, or as a one-time lifetime purchase.
Release notes
What’s new in Ossly
Version
1.0
The release notes of this version are available on the App Store.
FAQ
Ossly: your questions, answered
Something else? The Ossly support page covers purchases, sync and settings, and lets you write to us directly.
Is Ossly free?
Yes. Ossly is free to download from the App Store. Optional in-app purchases unlock extra features; they are billed by Apple to your Apple Account, and you can manage them at any time in your account settings.
Which devices does Ossly work on?
Ossly works on iPhone and iPad with iOS 17.0 or later.
Can I log gi and no-gi training on the same day?
Yes. Ossly lets you record separate gi and no-gi sessions on the same day, along with drilling or sparring rounds.
How does Ossly track my belt promotions?
Every promotion appears on one belt timeline, from white belt to black, and you can attach a promotion photo to each one. Ossly supports adult belts as well as the full kids and teens belt system, including every stripe.
Can I add my own techniques to the technique library?
Yes. Alongside the built-in technique library, you can add your own custom moves and edit or delete any technique at any time.
Does Ossly show taps broken down by my partner’s belt level?
Yes. This stat shows the belt of the partner you tapped or who tapped you, since tapping a black belt is different from tapping a white belt.
Can I log competitions in Ossly?
Yes. You can record your division, results, and match notes for each competition you enter.
Does Ossly require an account?
No. Ossly is local-first and does not require an account to use.
What languages is Ossly available in?
Ossly is available in 44 languages: Arabic, Bangla, Catalan, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Odia, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Urdu and Vietnamese.
How do I get help with Ossly?
Visit the Ossly support page: it answers common questions about purchases, sync and settings, and has a contact form. You can also write to contact@develak.com. We read every message and reply personally.
Made by Develak
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