11 times world champion

Aparecido "BILL"

2x world champion





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Mobile Black Belt

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Learn some of the essential Jiu-Jitsu movements including: Pulling Guard, Sweeps, Chokes, and other Submissions. Professor Bill has used his over 35 years of competing and teaching to select 76 techniques that have proven to be some of the most effective in Jiu-Jitsu. Professor Bill also featured both the Spider and Butterfly guards two of the more versatile techniques. Each technique is filmed from a variety of angles, slow motion, and real time to provide you with the perspective you need to understand the key points and details.


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Caio Terra

Caio Terra is a four-time Rio de Janeiro state champion, a five-time Brazilian National Champion, and thirteen-time World Medalist, the ONLY eight time International Brazilian Jiu-Jitsu Federation (IBJJF) Black Belt World No-Gi Champion. 

Aparecido "BILL" Ferreira

Aparecido “Bill” Faria, known to friend and students as “Professor Bill”, is a 2X Brazilian Jiu-Jitsu World Champion and 5X Brazilian Jiu-Jitsu National Champion. 

Fabio Prado

He trained there under Royler Gracie‘s black belt, Marcelo Clemente earning his brown and black belt by the Gracie instructor. In 2007 “Pateta” decided to try his luck in the United States, travelling through California and Hawaii coaching and fighting, before settling in Sacramento after he received an invitation to coach MMA’s rising star Urijah Faber.

Gracie Barra

The new Gracie Barra Fundamentals consists of 16 weeks of training that are divided into 4 mobile apps.Each app contains 4 weeks of lessons. Carlos Gracie Jr. and his team developed the new curriculum with feedback and input from hundreds of Gracie Barra Black Belt’s. 

I studied under a fantastic teacher from Brazil that received his BB from one of the Gracie’s schools in Brazil. I paid him $100 for privates, plus of course the monthly group fees. Though he would allow me to tape my privates for study, they often would miss a LOT, due to a stationary camera position, set at lesson Start. I say this so that you understand where I’m coming from.


I used the entries and set-ups for the spider and butterfly guards the very next day in class. I was able to sweep numerous people with the butterfly guard and most were so confused at how quickly it happened that I was able to tap them out shortly thereafter. That was worth the cost alone.

Paul Dirac

Definately a fantastic app. I had the opportunity to actually work with Professor Bill while in CA. And I can honestly say that the classes convey exactly what is on video. Clear and consise no nonsense. Worth every penny, I cant wait till they actually further and expand the series.




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Mobile Black Belt is a developer and publisher of premium digital content.  Our content partners are experts in their respective fields, offering “black belt” level expertise to the public through our mobile platform. 

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