About Us

From Boutique Studios to Fitness Clubs, SubGuru provides customizable solutions to fit every studio’s needs.

Our Mission:

Sub Guru provides clients with a reliable management solution, relieving them of the common burden of finding substitute instructors for classes. Whether you need to find a sub 2-weeks or 3 hours before a class, Sub Guru will match every class with the appropriate instructor.

Our Purpose:

Our tools empower studio owners threefold:

  1. Provide consistent high-quality customer service through thoughtful communication
  2. Develop well-informed internal systems from trackable data
  3. Grow community and enhance team collaboration

Our Values

1. Integrity

Your time is valuable. Through compassionate relationship, we will always do what we say and honor our promises with transparency. We will always be honest and lead without fear.

2. Inclusivity

We will continually challenge ourselves, others, and our business platform to grow and learn in an environment of mutual concern and respect for the freedom and equal opportunity of all individuals.

3. Courage

We commit to taking risks and asking the hard questions; pushing through the challenges that we all face together as business owners in effort to get to a place of consistency and success.

4. Listening

We learn best when we listen, to your experiences and needs. From your feedback, we grow, shift and build. 

5. Social Impact

Our company was built with the intention of lifting others up through social impact. Our number one priority will always be caring for others and providing opportunity for change. 

Sarah Rasby, M.A.


Sarah Rasby is no stranger to the fitness Instructor Substitution process! She has co-owned a Yoga studio based in Lincoln, Nebraska since 2013. As the Co-Owner and Regional Director of her studios, she believes quality instruction is the heartbeat of her studio. With the many responsibilities that come along with owning a studio, Sarah desired to build a strong, reliable and intellectual system to find and schedule Substitute Instructors for classes. From all the challenges, mishaps, successes, and mediation, SubGuru was created! Sarah is a passionate Entrepreneur and Yoga Instructor. Her vision is to build conscious awareness and integrity within the fitness industry and SubGuru is the management solution to do just that!

Andra Rasby, M.B.A.


Andra Rasby understands the sports and fitness industry from the inside out. She holds an MBA with a concentration in Sports Business, is a former Division 1 Athlete, and a certified Yoga Instructor. As both a Client and Instructor, Andra is well familiar with Group Fitness and the operations behind the Instructor Substitution process. She recognized a disconnect in finding the most appropriate substitutes for group classes. There were too many steps, lost emails, and last minute requests. With a desire to fix this problem, she teamed up with Sarah to design SubGuru and says, “I want Owners, Managers, and Instructors to spend less time worrying about finding the right Teacher and more on the quality of the class.”
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