About CommonSource
An independent app studio building premium tools and experiences that people actually want to keep using.
At CommonSource, we build apps for real people with specialized needs. Our portfolio spans English language learning, legal calculation tools, elegant chess analysis, Morse code training, and hardcore terminal-based games — all unified by a strict commitment to thoughtful design and genuine usefulness.
We are a focused team that believes great software comes from deeply understanding our users, then crafting frictionless, beautiful experiences that exceed expectations. Every app we ship is a tool we rely on ourselves.
8
Curated Apps
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Platforms
∞
Updates Shipped
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Guiding Vision
Our Philosophy
Craft Over Quantity
We believe fewer, better apps beat a sea of mediocre ones. Every line of code is written with premium intention.
Depth of Experience
Our apps are designed for people who use them daily. Deep functionality gracefully presented through clean interfaces.
Iterative Perfection
We ship fast, listen intently to our users, and refine constantly. Exceptional software is an ongoing pursuit.
Global Reach
From Korean law school students to amateur radio operators worldwide, our specialized tools cross boundaries.
Our App Portfolio
A meticulously crafted collection of tools spanning education, legal productivity, game engines, and authentic simulations:
- 🗣️SpeakEasyAI-powered English learning through real conversations
- 🖥️The Blackout: UnsupervisedHardcore terminal-based AI raising simulation
- ⚖️CaseBitesLegal precedent learning for law professionals
- 📻AI CW RadioSimulate shortwave QSOs with LLM-powered operators
- 📅Lawyer's CalculatorProfessional tool for precise legal period calculation
- ···−Morse TrainerScientific Morse training via the Koch method
- 💡Fave LEDVibrant digital LED banners for any occasion
- ♟️Lina ChessProfessional chess analysis powered by Stockfish