About

Qdan Inc. is an app studio in Kichijoji, Tokyo. We plan, build, and operate games for people gathered in one place — and tools that make everyday life a little more playful.

What we do

We plan, build, and operate smartphone apps in-house, mostly party games. From planning and development to design, operations, and support, we team up with engineers and designers inside and outside the company, producing every stage of our apps and games ourselves.

At our core we are a team of two. Staying small keeps decisions fast and lets the same eyes follow every detail from planning to operations — we use that to engage honestly with what makes things fun, and to deliver services from many different angles.

released
13+ apps
Dokopa users
400k monthly
Keikenchi users
180k monthly

Monthly active users, our own analytics, as of May 2026.

Adapting analog games and web services

We care about UI/UX that keeps the original games fun, and about making each app easy to use on a smartphone.

  • Word Wolf — original game by Kawasaki Factory
  • Keikenchi — originated from Todofuken-Shikuchoson (uub.jp)
  • Four "Yuru-ge" titles — business partnership with Drosselmeyer Shokai, who create and supervise the originals
  • Inside Dokopa — "Quiz Iisen Ikima SHOW!" (Arclight), Goita (supervised by the Noto Goita Preservation Society), "Minna de DanDan Tier!" (designed by TANSAN)

Media coverage

Our apps have been featured in many media outlets.

  • TV: "Ousama no Brunch", "School Kakumei!", and more
  • Magazines: nicola, Seventeen
  • Newspapers: Hokkoku Shimbun and others
  • YouTube: many gameplay and review videos

Inquiries

We welcome inquiries about adapting board and card games into apps, planning games built on existing IP, collaborations with TV, radio, and events, and smartphone app development in general. Feel free to reach out by email.

Contact us →

Company profile

Company
Qdan Inc. (株式会社Qdan)
Founded
April 5, 2022
Office
Kichijoji PARCO 8F, SkiiMa Kichijoji, 1-5-1 Kichijoji Honcho, Musashino-shi, Tokyo 180-0004, Japan
Representatives
Keisuke Saito and Kazuki Sato (co-representatives)
Capital
3,000,000 JPY
Business
Planning, development, and operation of smartphone apps (party games and tools)
Banks
Sumitomo Mitsui Banking Corporation, Tama Shinkin Bank, GMO Aozora Net Bank
Contact
contact@qdan.co.jp