Software Development Studio

Tools that don't exist yet,
built in software.

STUDIO YK1 is a software development studio that plans its own learning apps and games, and carries them through from design to implementation and testing.

Products

Upcoming products

All of these products are in development or being prepared for release. The content and screens shown here reflect the current state of development; specifications, names, and release timing may change.

Title screen of PLANETARIUM / SEA OF STARDUST: a spaceship and the Earth

01 — GAME

Planetarium / Sea of StardustFly through the real stars.

A spaceship simulator that turns the actual positions of real stars into a universe you can fly through freely. A one-of-a-kind ship is assembled from each player's name, and you can travel faster than light from the solar system to nearby star systems.

In developmentSteamGoogle PlayApp StoreSingle-player
Nekogaku welcome screen
Nekogaku true/false answer screen
Nekogaku mock exam result screen

02 — LEARNING APP

NekogakuNekogaku — Don't memorize. Tell right from wrong.

A learning app that splits Japanese qualification exam questions into single statements and presents each one as true or false. Statements you get wrong are recorded automatically and come up first; answer one correctly three times in a row and it graduates. Every question has read-aloud audio, so you can study by ear alone. No connection required. The app is in Japanese.

Planned for 2026AndroidiOS19 productsNo ads

Message

Software that brings
real value to the world.

We don't build “nice to have.”
Software that gives people their time back. Software that makes possible what wasn't possible before. We release only what we can say that about.

Studying for an exam with nothing but your ears on the commute. Flying the real night sky in a ship of your own.
The fields differ, but the reason we build is always the same: if it doesn't exist yet, we make it.

01

What doesn't exist yet.

We don't rehash what already exists. We think from scratch about tools that make people say, “This is what I wanted.”

02

Respect for the user's time.

Easy to use without hesitation, useful right away. We don't get in the user's way with ads or needless steps.

03

If we release it, it has to be solid.

We state only facts we have verified, and deliver only what has passed testing. We release at a quality that lasts.

About

About the studio

From planning to design, implementation, and testing.
We carry every product through, start to finish.

Trade name
STUDIO YK1
Established
September 2026
Location
5F FPG Links Jinnan, 1-11-4 Jinnan,
Shibuya-ku, Tokyo 150-0041, Japan
Business
Planning, development, and sales of software
(learning apps / games / tools for video and game production)
WEB
studioyk1.com

Contact

Contact

For inquiries about our products, press, or business, please contact us at the email address below.

info [at] studioyk1.com