01 / 13Game
Lina Chess
An offline chess lab that explains every move
Independent app studio in Seoul · 13 apps
Useful,
beautifully.
We begin with a particular need—one alarm, one precedent, one chess move—then understand it deeply and shape it into an app worth keeping.
Lina Chess ✦Lina Scanner ✦Lina Viewer ✦Lina Alarm ✦DS1UOV's AI CW Radio ✦DS1UOV's Morse Trainer ✦Lina OBD ✦SpeakEasy ✦CaseBites ✦The Blackout ✦Lawyer's Calculator ✦Fave LED ✦Police Exam Bites ✦Lina Chess ✦Lina Scanner ✦Lina Viewer ✦Lina Alarm ✦DS1UOV's AI CW Radio ✦DS1UOV's Morse Trainer ✦Lina OBD ✦SpeakEasy ✦CaseBites ✦The Blackout ✦Lawyer's Calculator ✦Fave LED ✦Police Exam Bites ✦
Our point of view
Not for everyone. For someone who needs it.
Every CommonSource app begins with a concrete problem. We design the moment a person actually faces before counting features.
Law, learning, radio, vehicles, reading and games may look unrelated. The rule is the same: deep, quiet and built to last.
Selected apps
Six very different worlds.
02 / 13Productivity
Lina Scanner
Sharp documents. Private by design.
03 / 13Lifestyle
Lina Viewer
Every comic and book in one beautiful library
04 / 13Lifestyle
Lina Alarm
An alarm that turns waking up into action
05 / 13Simulation
DS1UOV's AI CW Radio
A radio world in your hand, alive with AI operators
06 / 13Education
DS1UOV's Morse Trainer
Koch training where accuracy unlocks the next character
13
Released apps
2
Platforms
10+
Specialties