WW inc. / Tokyo, Japan / since 2021
Less boring inefficiency.
More fun inefficiency.
WW inc. is a company from Japan that uses data science and AI to make slightly unusual products and media, and tries them out in the real world.
- Experiments running now
- 16
- Subscribers on Stabiz YouTube
- 65.4K
- Newsletter readers
- 4,429
- Articles on Stabiz, Umaburo and Bodoge Buddy
- 1,102
As of 2026.11.09
Projects
Experiments
Every product and media site we run is an experiment. Each one tests whether we can cut some boring inefficiency and add more of the fun kind in its place.
EducationApp · iOS / Android / Web
Onigiri Anki
LessMaking flashcards by hand
MoreThe joy of speaking Japanese
A flashcard app for people learning Japanese. AI writes the example sentences and translates them into 40 languages.
- Learners
- 15,700+
DevelopmentWeb service · iOS
Onbo Hub
LessTrying out popular apps one by one to study them
MoreFinding ideas you want to copy
A collection of onboarding flows and paywalls from popular apps, with notes on their UX and pricing.
EducationSchoolJapanese only
Staaka
LessGetting lost while studying alone
MoreThe fun of thinking with data
A data science school with video lessons and mentoring from working data scientists.
- Courses
- 34
EducationWeb mediaJapanese only
Stabiz Web
LessHours of wrestling with dense textbooks
MoreTime spent trying out AI
A media site that makes data science and AI easier to get into.
- Articles
- 503
EducationYouTubeJapanese only
Stabiz YouTube
LessFreezing up in front of a formula
MoreThe moment it finally clicks
A YouTube channel for learning data science and AI in a fun way.
- Subscribers
- 65.4K
- Videos
- 399
EducationWeb serviceJapanese only
DataDojo
LessReading textbooks alone for hours
MoreThe thrill of competing
A platform where you take courses and enter data analysis competitions.
DevelopmentMac appJapanese only
Karuku
LessCompressing screenshots one at a time
MoreTime for making things
A menu bar app that automatically shrinks the images that land on your Desktop and in Downloads.
DevelopmentNewsletterJapanese only
Newsletter
LessHunting for success stories from outside Japan
MoreIdeas for what to build next
A weekly newsletter that takes one successful product from outside Japan in the generative AI era and looks at it in depth.
- Readers
- 4,429
- Paid readers
- 268
EntertainmentWeb serviceJapanese only
yomeru
LessWondering which book to read
MoreTime spent reading
A book ranking that collects book recommendation articles from around the web and scores each book with its own formula.
EntertainmentWeb serviceJapanese only
Filmatch
LessWondering what to watch
MoreTime lost in a film
yomeru for films. It collects film recommendation articles and ranks the films.
EntertainmentWeb serviceJapanese only
Sakebuddy
LessWondering which sake to pick
MoreTime spent enjoying sake
yomeru for sake. It collects sake recommendation articles and ranks the bottles.
EntertainmentWeb serviceJapanese only
Winebuddy
LessStanding stuck in front of the labels
MoreTime around a bottle of wine
yomeru for wine. It collects wine recommendation articles and ranks the bottles.
EntertainmentWeb serviceJapanese only
Cosmebuddy
LessCosmetics you regret buying
MoreTime spent enjoying makeup
yomeru for cosmetics. It collects cosmetics recommendation articles and ranks the products.
EntertainmentWeb serviceJapanese only
Campbuddy
LessWondering which gear to buy
MoreTime watching the campfire
yomeru for the outdoors. It collects camping gear articles and ranks the gear.
EntertainmentWeb mediaJapanese only
Umaburo
LessOutdoor gear you regret buying
MoreTime spent outside
A blog where a former outdoor shop clerk reviews outdoor gear and trips in earnest.
- Articles
- 485
EntertainmentWeb mediaJapanese only
Bodoge Buddy
LessWrestling with the rulebook
MoreTime playing together
A media site that reviews board games so you can tell how fun they are before you play.
- Articles
- 114
Director
Who's behind it
Yuma Ueno(Umatan) · lives in Georgia, the country
- Founder & CEO, WW inc.
- Director, Startup Büro (Georgia)
- Angel investor
- Udemy instructor
- Author
Data scientist. After Shiseido, Unilever and an AI startup, he founded WW inc. in 2021. He now lives in Georgia, where he is a director of Startup Büro, a company that supports local startups, and invests in startups as an angel. He speaks at tech events outside Japan, including Global Tech Weekend Tbilisi and DataFest Tbilisi. On his own, he writes books on AI and data science and teaches on Udemy.
- Students on Udemy
- 134,271
- Reviews on Udemy
- 26,914
- Talks outside Japan
- 3
- Books
- 5
Company
Company
- Name
- WW inc. (株式会社ダブダブ)
- Founded
- June 28, 2021
- Location
- Itabashi, Tokyo, Japan
- CEO
- Yuma Ueno
- Capital
- JPY 1,000,000
- Corporate number (Japan)
- 8011401023498
- Business
- Data science education; app and web service development; entertainment web services and web media