About Us

People aspire to live healthy and active lives but often feel like life itself gets in the way. Many find it difficult to be healthy due to a lack of motivation and guidance combined with scheduling, cost & accessibility constraints. With the proliferation of mobile devices, people now have access to health and fitness support in a whole new way.

Here to power the mobile fitness movement, Skimble offers fun, dynamic and social applications for everyone. Available now are Skimble's Workout Trainer, Coco's Workout World, Fitness Flow, and GPS Sports Tracker apps that help motivate people to get and stay active. Have a question? Contact us at support@skimble.com.

Excited about what we do and want to join our team? Check out our current job openings.



Maria Ly Co-founder

Whether practicing yoga at K2 base camp, climbing 5.13a or doing a backflip from her days as a Canadian power cheer gymnast, Maria is a natural-born Skimbler. She also loves technology with experience at Google, Flurry and Cypress. Maria holds a BASci in Computer Engineering with Management Sciences & International Studies minors from the University of Waterloo.


Gabriel Vanrenen Co-founder

Gabriel is a mobile technology guru who is passionate about creating products that enable people to live healthier lives. Prior to starting Skimble, Gabe co-founded Flurry, a leading mobile analytics company and was an engineer at Wily Technology before its acquisition by CA. Gabe graduated Summa Cum Laude from Dartmouth College with a B.A. in Computer Science.


Tim DeGraw Software Development

Tim is an internet industry veteran. He began his career at NASA, and moved quickly to positions at top internet startups, such as Napster and Imeem. Tim holds a B.S. in Aerospace Engineering from the University of Michigan. Tim's fitness foundation was developed during his years training as an NCAA collegiate gymnast. Nowadays, he enjoys impromptu 'triathlons-in-a-day' made up of any three of his favorite sports.


Kayla Porter Content & Program Development

Kayla brings health and wellness to everyone with a scientific approach. When not hard at work, Kayla is an avid Bikram yogi, can be found catching waves, or swim/bike/running her way to the finish line! Kayla’s background is in health research with special interests in physical rehab and osteoporosis. Kayla holds an MA Sc. in Kinesiology from the University of Waterloo with a focus in physiology.


Stephanie Wong Creative Director

Steph is a lover of all things design, food, and fitness! She is also a co-founder of WakeTheWolves.com, a recklessly fun, healthy lifestyle company. She holds a BA in Visual Design from the University of San Francisco, teaches weekend TRX bootcamp classes for the heck of it, and is all about making "healthy living" a beautiful, bad-ass experience.


Micah Greer Sr. Global Trainer

Micah won't stop until you achieve your fitness goals, and has it down to a sophisticated science. He is constantly devising new exercise programming and is certified by NASM, ACE & NSCA. Micah holds a M.A.Ed. in Exercise Physiology and BA in Exercise Science from the University of Alabama, Birmingham.


Courtney Miyamoto Community Gladiator

Courtney is psyched to support the Skimble community in their health journeys! She has the muscle and people skills to work through any community need, question or idea. Previous to Skimble, Courtney worked in consumer and customer-centric positions at Mixed Media Labs, imeem and Virgin America. She holds a BA in Art History from University of California, Davis.


Tiffany Sippel Sr. Global Trainer

Tif delivers a mean workout with a smile. Tif is certified through the NASM and also carries Pre/Post-Natal, Performance Enhancement and Sports Nutrition, Z-health, R-phase, I-Phase, and TRX certifications. In her spare time, she enjoys dance, acrobatics, and parkour. How does she do it all? With style! Tif holds a BS in Product Development from the Fashion Institute of Technology.


Special thanks goes out to Mark, Jason, David and Joel for multimedia production, Sophia and Thaddeus for illustrations, Pronob for sound effects, and translations by: Dario, Gabrielle, Tanguy, Kei, Jonathan, Elisa, Nu and Dae Young. We couldn't have done it without your help.



Skimble is located in sunny San Francisco.

One Ferry Building, Suite 255
San Francisco, CA 94111