Comparison

BJJ Master App by Grapplearts vs KruBoss Rollers

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

KruBoss Rollers

Connect with the global Brazilian Jiu-Jitsu community. Discover gyms, find training partners, share your progress, and upload videos to engage with fellow enthusiasts. Customize your profile to represent your BJJ style.

Highlights
  • Discover BJJ gyms and mats
  • Advertise home gyms or rolling spaces
  • Connect with local BJJ fans
  • Track and share progress
  • Upload videos and engage
  • Customize Gi and NoGi profiles
Read full description

Welcome to Kruboss Rollers BJJ – Your Jiu-Jitsu Journey Starts Here Built by and for Brazilian Jiu-Jitsu enthusiasts, Kruboss Rollers BJJ is your ultimate hub to **connect, train, and grow** within the global BJJ community. Key Features - Discover BJJ gyms and mats near you – Whether you're traveling or new to the sport, find the best training spots with ease. - Advertise your own home gym or rolling space – Share your mat with others and build your local BJJ crew. - Connect with local BJJ fans and training partners – No more solo drills; find someone to roll with anytime, anywhere. - Share your journey – Track and showcase your progress, from stripe to black belt. - Upload videos and engage with the community – Post your best moves, match clips, or drills and get feedback, comments, and support. - Customize your profile for both Gi and NoGi – Your style, your setup—represent who you are on the mats. Whether you're a white belt dreaming of your first submission or a black belt coaching the next generation, Kruboss Rollers BJJ brings the community to your fingertips. Download now and take your Jiu-Jitsu lifestyle beyond the mats.

Screenshots

BJJ Master App by Grapplearts4 screens
KruBoss Rollers4 screens

Verdict

The call

The clearest difference is review sentiment: BJJ Master App by Grapplearts at 82% against KruBoss Rollers's 0%. BJJ Master App by Grapplearts also leads on rating (4.7 vs 3.5) and ratings volume (73 vs 2). KruBoss Rollers's advantage is in-app purchases (none vs 17) and iOS requirement (13.0 vs 16.6). 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 17 one-off in-app purchases. KruBoss Rollers asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

BJJ Master App by Grapplearts holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: BJJ Master App by Grapplearts has 73 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 82% of BJJ Master App by Grapplearts's written reviews are positive against 0% of KruBoss Rollers's.

UpkeepUpdate frequency

BJJ Master App by Grapplearts ships an update every 3 weeks, KruBoss Rollers monthly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
BJJ Master App by Grapplearts versus KruBoss Rollers: the parameters behind the verdict, then further details
ParameterBJJ Master App by GrappleartsKruBoss Rollers
PriceFreeFree
Rating4.7 (73 ratings) — better3.5 (2 ratings)
Positive reviews81.7% of reviews — better0.0% of reviews
Number of ratings73 — better2
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.613.0 — better
Further details — not scored
Size53 MB48 MB
Age rating12+4+
DeveloperGrapplearts Enterprises Inc.Globules Interactive Limited

Customer experience

BJJ Master App by Grapplearts

All ratings73 ratings
Positive93.2%
Neutral0.0%
Negative6.8%
Written reviews60 reviews
Positive81.7%
Neutral1.7%
Negative16.7%

KruBoss Rollers

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

KruBoss Rollers

Not enough reviews yet to summarise bugs or requests.

In-app purchases

17 purchases

BJJ Master App by Grapplearts

One-time17
  • Grapplearts Submission Defense$3.99
  • Grapplearts BJJ Submissions$3.99
  • Grapplearts BJJ Guard Sweeps$3.99
Show 14 more
  • 7 Days to Better Guard Sweeps$6.99
  • Gripfighting & Kuzushi Bundle$29.99
  • Rolling Backtakes for Everyone$29.99
  • Self Defense Guard - Bundle$29.99
  • Open Guard System - Bundle$34.99
  • Non-Stop BJJ - Bundle$49.99
  • Closed Guard System - Bundle$49.99
  • BJJ Formula - Bundle$59.99
  • Pressure Passing (Bundle)$59.99
  • BJJ Games$69.99
  • Bigger, Stronger 1 - Bundle$69.99
  • BJJ Foundations Instructional$79.99
  • BJJ for Old F***s - Bundle$79.99
  • Modern Leglock Formula Bundle$89.99
None

KruBoss Rollers

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 KruBoss Rollers free?
KruBoss Rollers is free to download, with no in-app purchases.
Which has better reviews, BJJ Master App by Grapplearts or KruBoss Rollers?
BJJ Master App by Grapplearts is rated higher. BJJ Master App by Grapplearts averages 4.7 out of 5 from 73 ratings, while KruBoss Rollers averages 3.5 from 2 ratings.
Do BJJ Master App by Grapplearts or KruBoss Rollers have ads?
Neither BJJ Master App by Grapplearts nor KruBoss Rollers shows ads.
Which is updated more often, BJJ Master App by Grapplearts or KruBoss Rollers?
BJJ Master App by Grapplearts ships an update every 3 weeks, and KruBoss Rollers monthly. Most recently, BJJ Master App by Grapplearts was updated on October 23, 2026 and KruBoss Rollers on October 24, 2026.

Other comparisons