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Interactive economics learning,
on the web and on mobile.

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

Econ Academy - free adaptive online microeconomics course with interactive graphs

ECON
ACADEMY

Free adaptive microeconomics course. Interactive graphs, spaced repetition, and mastery tracking — built by a PhD economist for AP Micro and Econ 101

MicroeconomicsFree & Adaptive
Visit Econ Academy →
Econ Tutor - mobile companion app for Econ Academy with 30+ interactive economics graphs

ECON
TUTOR

The mobile companion to Econ Academy. 30+ interactive graphs, simulations, and a 24/7 AI tutor for economics on the go — iOS and Android

Mobile CompanioniOS & Android
Logical Argumentation - critical thinking and LSAT prep app

LOGICAL
ARGUMENTATION

Develop critical thinking skills through interactive exercises in formal logic, debate, and argument analysis

PhilosophyCritical Thinking
Dualis - AI-powered homework solver for math and economics

DUALIS
HW SOLVER

Snap a photo of any math or economics problem and get instant AI-powered step-by-step solutions

AI Homework HelpMath & Economics
TEX

EXAM
TEX

Create practice exams from your notes and course materials. Generate custom quizzes, study guides, and print-ready PDFs to ace your next test

Practice ExamsStudy Tool
Visit ExamTeX →
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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 17 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.

“

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
17
Free Study Guides
30+
Interactive Models

LET'S CONNECT

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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.