Product development startup

Rethinking value — enriching people's lives

byus&co. designs thoughtful everyday products that solve real problems. We're a remote-first team guided by speed, sincerity, and close customer collaboration in everything we build.

Growth & Satisfaction

We foster ways of working that let each person's skills shine, improving both team productivity and individual fulfillment.

Speed & Iteration

When an idea appears, we act quickly — we welcome feedback and continuously iterate to improve our products.

Sincere Communication

We communicate openly and respectfully with everyone, rediscovering the perspectives society needs.

Customer Dialogue

We listen to customers to uncover real problems and build solutions driven by their needs — not assumptions.

Our story

Founded in Tokyo in 2013, byus&co. began as a venture-backed startup. Our founder leads product design and development, shaping ideas into services that address everyday needs and has launched multiple products.

We operate as a small, remote-first team. Freed from constraints of place and time, each member brings their ideas to life while staying closely connected to grow both the team and our products.

Beyond the biases of titles—company and customer, employer and employee—we develop products through close communication so individuals can pursue the growth and satisfaction they seek.

Services

Casican — Smartphone-based lending management

Manage reservations, lending, returns, and messaging for shared items (office libraries, community resources). Free plan available.

Tuneup — AI that adapts to your needs

An AI service that uses your data to create original articles. By creating content and adding your data, you generate unique articles derived from information you own.

Use cases

デジタル時代の地方から問う「学び」と「居場所」― Innovation Commons 修徳館（カシカンインタビュー#3）
地域の絆が深まる図書室。小学校併設の「なだのはま市民図書室」の取組み。（カシカンインタビュー#4）
ICTを活用して絵本と子供がもっと身近に - おとのもり保育園が取り組む豊かな保育（カシカンインタビュー#1）

Company profile

byus&co. Co., Ltd.
Address: 2F−C, Shibuya Dogenzaka Tokyu Building
1-10-8 Dogenzaka, Shibuya-ku, Tokyo
Established: June 2013
Representative: Yoshiaki Tsutsumi