About Renkara

Building intelligent software for human potential.
Founded 2008 in Chicago. Now in Keller, Texas.

Our Story

From Apps to Adaptive Learning

Renkara Media Group was founded in 2008 in Chicago, Illinois. What started as a technology company building educational apps for the iPhone evolved over nearly two decades into an AI and machine learning engineering company focused on a single problem: making expertise accessible to everyone.

That evolution led to AVIAN — our proprietary adaptive learning engine. It observes how each learner interacts with content, identifies what they know and what they don't, and continuously adapts to deliver the most efficient path to mastery. No two learners see the same experience.

We filed our first provisional patent in October 2025 and followed with 26 additional patent applications covering everything from domain knowledge synthesis to federated multi-node deployments. The portfolio now encompasses 27 filings and 593 claims across the full adaptive learning stack.

Our flagship product, AccelaStudy AI, puts AVIAN in the hands of anyone preparing for a certification exam, standardized test, or professional credential. It learns about you, then adapts to you. Skip what you know. Focus on what you don't.

Mission

What We Believe

Build intelligent software that makes expertise accessible to everyone.

Values

How We Work

AI First

We don't just use AI — we build around it. Every workflow, every pipeline, every decision point is designed to extract maximum leverage from the best models available. Human judgment steers. AI executes. The result is a small team that ships like a large one.

Precision

No hallucinations here. 27 patent filings. 593 claims. We don't ship until the science is right. Every adaptive algorithm is validated, every claim is substantiated, every subsystem has a proven foundation.

Adaptivity

Our systems learn about you, then adapt to you. No one-size-fits-all. The engine tracks what you know and what you don't, adjusting in real time to create a learning experience that is genuinely personalized.

Respect for Time

Skip what you know. Focus on what you don't. Every minute counts. Our adaptive engine measures what you've mastered and routes you to what you haven't, so nothing is wasted.

Team

Who We Are

Charles Sieg, Founder and CEO

Charles Sieg

Founder & CEO

Charles started building software in 1997 and shipped the App Store's first language flashcards app - AccelaStudy - on opening day in 2008. Over the next decade, he grew Renkara Media Group from a side project into a company with 30 million downloads, 300+ published apps, and dozens of enterprise consulting clients. He has held senior architecture roles at Pearson Education and served as a consulting engineer for brands ranging from Victoria's Secret to the Oprah Winfrey Show. Charles is the sole inventor on all 27 AVIAN patent applications and the architect of the adaptive learning engine that powers AccelaStudy® AI. He lives in Keller, Texas.

Renkara Media Group is a privately held company based in Keller, Texas.