Mobile App Development

Our focus is on developing apps
that help people improve themselves
and reach their full potential.

Portfolio
Developer
Dev Support

Portfolio

Driven by the belief
that smartphones should empower individuals
we create self-improvement apps
that help people reach their full potential.
(All apps are built using Flutter.)

GAMBO
（68 Seconds to Your Dreams）

Struggling to manifest your desires
with the Law of Attraction?
This app is for you!
Achieve your dreams with just a 68-second daily habit.

Explore “GAMBO” ▶

Meiso
（Mindfulness for Everyone）

Experience the simplest mindfulness meditation app,
featuring soothing bell sounds and calming nature noises.
Traditional yoga breathing techniques promote
inner peace and true happiness.

Explore “Meiso” ▶

Memory Rangers
（Retro Game for Brain Training）

No-nonsense brain training app
based on scientific cognitive development methods.
Enjoy a retro gaming experience
while boosting your brainpower!

Explore “Memory Rangers” ▶

Eiken® Vocab for Kids
（5-Minute Daily Training with Ruby, Examples, and Audio.）

Pass the EIKEN exam with this app!
Learn 1500 frequently-used words
with furigana, example sentences,
audio, and progress tracking.
No in-app purchases or ads!

Explore “Eiken® Vocab for Kids” ▶
（Japanese Only）

Goikoikoi
（Language Learning App for Those Struggling with Vocabulary Acquisition）

Learn 1400 essential Japanese words
at 0.65 seconds per word with our flashcard app!
A revolutionary vocabulary building app
that taps into your right brain.

Explore “Goikoikoi” ▶
（Japanese Only）

Developer

Hiroyuki Kitagawa（Keybow）

Born and raised in Osaka, Japan, Hiroyuki has a diverse professional background spanning over two decades in the financial and technology industries. With a strong foundation in Japanese stock trading, investment analysis, and business planning, Hiroyuki has held positions at leading life insurance and asset management companies.

In 2016, Hiroyuki founded Telulu LLC, a mobile app development company. Driven by a passion for leveraging technology to enhance mental well-being and cognitive development, Hiroyuki spearheaded the creation of four popular apps, including "GAMBO: Wish Fulfillment Support App," "Meiso: The Simplest Mindfulness Meditation App," etc.

Inspired by personal experiences as a working professional, programmer, and parent, Hiroyuki launched the programming education cources called "Minpro (Programming for Everyone)" in 2017. This initiative provides programming support and psychological counseling to help individuals overcome programming hurdles and achieve their goals. To date, the project has successfully assisted over 3,000 individuals.

For more information about Hiroyuki's profile, please visit: