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CommonSource
ENKO

Independent studio in Seoul · 22 products

Useful,
beautifully.

From mobile apps to desktop tools and games, we begin with a clear need and shape it into a product worth keeping.

Explore all products How we work
SizeTree folder size analysis
Lina Alarm screen
Fave LED screen

New game · Early Access

Iron & Asphalt

A transport tycoon set in South Korea

Connect towns and industries by road and rail, then carry passengers and freight by bus, truck and train. Keep an eye on your routes and finances as you grow a small transport business into a listed company. Korea’s changing seasons, ink paintings and a Korean fusion soundtrack accompany the journey.

Explore the game Watch the trailer Listen to the soundtrack
Iron & Asphalt key art: a bus and truck crossing a river bridge below a city tower, hanok gates, farms and a freight yard

Product families

We choose the screen and platform that best fit the problem and the moment.

The right form for the need.

iOS · Android

16

Mobile apps

Focused iOS and Android apps for learning, daily life and specialist work

Explore
Windows · macOS

5

Desktop

Windows and macOS tools that work on files and video right on your computer

Explore
PC · Web · Mobile

2

Games

A transport tycoon for PC and a survival simulation for mobile

Explore
Web

Web services

Being prepared for release.

Coming later

Our point of view

Not for everyone.
For someone who needs it.

Every CommonSource product begins with a concrete problem. We design the moment a person actually faces before counting features.

Law, learning, radio, vehicles, video editing and games may look unrelated. The rule is the same: deep, quiet and built to last.

Desktop products

No uploads.
Just your computer.

CrystalCut workspace with a 12-file queue, a perfume bottle in Compare view and current-file settings

CrystalCut

Image utility

Fast images. Private processing.

AI background removal, object selection, brush refinement and batch conversion in one workspace.

View productWindows · macOS
LinaZip workspace browsing folders alongside ZIP and 7z archives

LinaZip

Archive & file utility

Pack together. Split apart. Extract exactly what you need.

View productWindows · macOS
SizeTree analysis showing a 166 GB demo folder as a sunburst chart beside its subfolder list

SizeTree

Storage utility

See your storage. Review cleanup with evidence.

View productWindows · macOS
FileTree Pro radial space map of a C: drive using 688 GB, with Users as the largest segment

FileTree Pro

Disk space analyzer

Navigate the file system like a map.

View productWindows · macOS
Lina Edit workspace with a video preview, word-by-word sentence list and waveform editor

Lina Edit

Video & caption editor

Edit video by its transcript.

View productWindows · macOS

Selected apps

Six very different worlds.

01 / 16Game

Lina Chess

An offline chess lab that explains every move

View app
02 / 16Productivity

Lina Scanner

Sharp documents. Private by design.

View app
03 / 16Lifestyle

Lina Viewer

Every comic and book in one beautiful library

View app
04 / 16Education

Ttokttoki Lina

Build the habit of pausing before a suspicious screen

View app
05 / 16Productivity

LinaPad

Return to the recording through the notes you wrote

View app
06 / 16Productivity

Lina Notes

One place to write, listen and find what matters

View app
View all 16 apps

Music

Music to work to.

11 Korean fusion gugak playlists, 209 tracks from the Iron & Asphalt soundtrack, ready to play right on this site.

Listen

Student access

Access the app you need for learning without the cost barrier.

Students and exam candidates can request one of a limited number of app access codes each month.

See the program

16

Mobile apps

5

Desktop tools

2

Games

Discord communityMeet the studio