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Interactive Study Guides
for University-Level Learning

Explore Our Apps
Built by Aras Zirgulis, PhD|15+ Years Teaching Economics|ISM University
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LEARNING TOOLS

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FREE STUDY GUIDES

Clear, concise explanations of key economics concepts — from supply & demand to game theory. Written by a PhD economist.

Browse All 12 Guides →
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THE STORY

After 15+ years of teaching economics, I noticed a troubling pattern: students weren't reading their textbooks. Static pages filled with dense text simply weren't engaging the digital generation.

I created these interactive learning tools to meet students where they are — on their phones, with dynamic content that responds to their touch.

The goal? Make learning economics and logic as engaging as the apps they use every day.

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Kastalia comes from The Glass Bead Game, referencing someone who once devoted his life to academia, but left to engage the real world.

15+
Years Teaching
1000s
Students Helped
30+
Interactive Models

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ACADEMIC CREDENTIALS
Aras Zirgulis, PhD↗
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MISSION

To transform education by creating interactive, engaging learning experiences that students actually want to use. Every student deserves access to high-quality educational tools that make complex concepts accessible and enjoyable to learn.