Link the Dots.
Connecting the dots to create new experiences.
RYNK is a one-person development studio based in Sapporo. We combine mobile apps, web, and AI to bring your "it would be nice if this existed" ideas to life.
What a small team makes possible
End to end, from planning to operation
From requirements and design through development and post-launch maintenance, one person handles it all — fewer handoffs, faster progress.
Mobile x Web x AI
App development with Flutter, web development with Next.js, and integration with AI APIs. We combine these three areas to match the shape of your idea.
Fast and flexible
Ship first, learn from real user feedback rather than chasing perfection upfront. Being small means we can adapt quickly to new requests and changes in scope.
What we're building
Products we develop and operate in-house.
Tekipa
Campus Marketplace大学生活をもっと便利に。時間割・授業レビュー・教科書売買をひとつに。
ShiftMaster
Shift Management小規模飲食店・小売店のための、シンプルで賢いシフト管理。
Coming Soon
Next Project次のプロダクトを準備中です。
What we do
End-to-end support, from initial planning through release and ongoing operation.
Mobile app development
We specialize in Flutter, shipping iOS and Android apps quickly from a single codebase.
Web app development
We build fast, SEO-friendly web applications and internal systems centered around Next.js.
AI integration
We integrate LLMs like ChatGPT and Claude, along with image-generation APIs, to create new experiences and streamline operations.
How we work
- 01
Discovery
Tell us what you want to build or the challenge you're facing — an online call works great.
- 02
Proposal & estimate
We organize the required features and propose a technology and approach that fits your goals and budget.
- 03
Design
We define the screen structure and UI/UX before development begins, so we're aligned on the full picture.
- 04
Development
We work in short cycles, so you can try out working software along the way.
- 05
Release & operation
We handle store submissions or web deployment, and keep improving after launch.
Technology we use
Frontend
Mobile
Backend
AI・API
Infra
Tell us about your idea
It's fine if you're still at the "could this even be built?" stage. Feel free to reach out.
Contact us