Comparison

BJJ Master App by Grapplearts vs Ossify

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

BJJ Master App by Grapplearts

Learn essential Brazilian Jiu-Jitsu techniques with comprehensive instructionals. Develop confidence in all aspects of ground fighting and grappling. This app provides a structured plan to master BJJ, making it accessible for self-defense and competition.

Highlights
  • Learn BJJ techniques
  • Instructionals from Grapplearts.com
  • Develop grappling confidence
  • Master ground fighting
  • Submission grappling techniques
  • Structured learning plan
Features
Read full description

SIMPLY AND QUICKLY LEARN THE BEST TECHNIQUES FROM BJJ Includes all the latest BJJ instructionals form Grapplearts.com BJJ has been proven again and again by professional fighters in Mixed Martial Art competitions, as well as by many ordinary people defending themselves in the street against bigger and stronger attackers. Many experts believe that BJJ is the single most effective martial art. We believe that many different martial arts are effective, but the bottom line is that if you understand the ground game then it gives you a HUGE advantage in a fight. Grappling may seem complicated and difficult to learn, but all you really need is a plan and a place to start. The techniques, tactics, and strategies covered in the different modules within this app will make you a confident grappler in all areas of the ground! Download this app now for free and get instant access to a TON of the most important BJJ and submission grappling techniques. ABOUT STEPHAN KESTING AND GRAPPLEARTS.COM My name is Stephan Kesting and I’ve been doing martial arts for more than 37 years. The grappling arts have been my main focus for about 25 of these years, and now I’m a Brazilian Jiu-Jitsu black belt, and also a certified instructor in Erik Paulson’s Combat Submission Wrestling. In addition to the grappling qualifications, I’m also a black belt in Kajukenbo Karate, an instructor in Dan Inosanto’s Jun Fan JKD, Maphalindo Silat, and the Filipino Martial Arts program. I’ve studied Japanese Judo, Russian Sambo, various Chinese Kung Fu systems, Brazilian Capoeira, Muay Thai Kickboxing, and many other martial arts. I’m not bringing up those qualifications to boast. The reason I mentioned them is to establish that I’ve been around the scene, trained with a lot of different people, and have a good understanding of the challenges that grapplers face on the mats everyday. I know quality and can recognize stuff that really works when I see it. Grapplearts is my company and we’ve been online since 2002. That’s a long time, and we’ve produced a ton of instructional products, continuously refining how the material gets taught and presented in order to make it easier to learn. The goal is to get you the best information in the easiest-to-learn format, period! END USER LICENSE AGREEMENT https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Ossify

Features
Read full description

Ossify is the home for Brazilian Jiu-Jitsu. Built for the people who actually train — athletes, coaches, gym owners — Ossify connects every mat, every round, and every promotion in one place. For athletes — free, forever. • Find a gym anywhere in the world on the discovery map • Drop in to listed gyms while traveling, with one tap • Track every class, every round, every belt promotion • See your training history, mat time, and progression at a glance • Join your home gym, view the schedule, and check in to class • Log a session you forgot to check into, up to a week later • Get announcements from your coaches For gym owners — everything, free. Every gym gets a page on the discovery map — and the full toolkit to run it: • Member roster with belt ranks, attendance, and contact info • Class schedule with capacity, instructors, and check-ins • Drop-in approvals from visiting practitioners • Belt promotion tracking and history • Gym announcements pushed to every member • Membership start/end dates, with freeze and resume • A curated links section for your members • Join request approvals • Verified badge once your listing is approved Everything in Ossify is free — there are no paid tiers, no subscriptions, and nothing to buy. Designed for travel. Whether you’re rolling in São Paulo, Tokyo, or your home academy on a Tuesday night, Ossify keeps your training in one feed. One platform. Every mat. Privacy first. Email-only sign-in. No password, no social tracking. Your training history is yours. Pricing Ossify is free to download and use, for athletes and for gyms. There are no in-app purchases. Terms: https://ossify.app/en/terms Privacy: https://ossify.app/en/privacy Oss, mat. Oss, gym.

Screenshots

BJJ Master App by Grapplearts4 screens
Ossify4 screens

Verdict

The call

The clearest difference is in-app purchases: Ossify at none against BJJ Master App by Grapplearts's 10. On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. BJJ Master App by Grapplearts sells 10 one-off in-app purchases. Ossify asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

Scorecard1 real difference · 9 level
BJJ Master App by Grapplearts versus Ossify: the parameters behind the verdict, then further details
ParameterBJJ Master App by GrappleartsOssify
PriceFreeFree
Rating4.7 (73 ratings) — better—
Positive reviews81.7% of reviews—
Number of ratings73 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.615.1 — better
Further details — not scored
Size53 MB50 MB
Age rating12+12+
DeveloperGrapplearts Enterprises Inc.PIOTR PESTKA

Bugs and requests

BJJ Master App by Grapplearts

Reported bugs

8 issues
  • Lost in app purchases during update
  • Lost access to purchased volumes after upgrade
  • No previously purchased apps loaded
  • No option to restore purchases
  • Cannot get previously purchased apps onto the 'All in one' app
Show 3 more
  • Purchased videos not downloading on restore
  • Cannot get all purchases to show on the app after upgrade
  • Sound not working on iPhone app

Requested features

4 requests
  • Make paid content available offline
  • Add takedown techniques
  • Include free modules with basic techniques
  • Fix sound issues on iPhone

Ossify

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

BJJ Master App by Grapplearts

One-time10
  • Grapplearts Submission Defense$3.99
  • Grapplearts BJJ Submissions$3.99
  • Grapplearts BJJ Guard Sweeps$3.99
Show 7 more
  • 7 Days to Better Guard Sweeps$6.99
  • Self Defense Guard - Bundle$29.99
  • BJJ Formula - Bundle$59.99
  • Pressure Passing (Bundle)$59.99
  • Bigger, Stronger 1 - Bundle$69.99
  • BJJ for Old F***s - Bundle$79.99
  • Modern Leglock Formula Bundle$89.99
None

Ossify

No in-app purchases

Questions

Is BJJ Master App by Grapplearts free?
BJJ Master App by Grapplearts is free to download, with in-app purchases available.
Is Ossify free?
Ossify is free to download, with no in-app purchases.
Do BJJ Master App by Grapplearts or Ossify have ads?
Neither BJJ Master App by Grapplearts nor Ossify shows ads.
Which is updated more often, BJJ Master App by Grapplearts or Ossify?
BJJ Master App by Grapplearts ships an update every 3 weeks, and Ossify every 3 weeks. Most recently, BJJ Master App by Grapplearts was updated on November 2, 2026 and Ossify on October 30, 2026.

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