Products
Web, mobile, and AI products we design, build, and operate ourselves.
Live & in operation
Align
A day counts only when three points align.
Align is a quiet, minimal habit app that counts a day as "complete" only when your thought, word, and action are in agreement. Choose one thing in the morning, take a small action at midday, and reflect gently at night. Instead of streaks, Align measures progress through an "alignment rate," with an introspective design that avoids loud gamification. No account required — all data stays on your device.
BJJ Techniques
BJJ Learning App
A BJJ techniques encyclopedia and learning app with 175+ techniques and 9 structured learning paths. From White Belt Survival to specialized courses like Guard Player and Leg Locks, progress through weekly programs with built-in tracking. Offline-first so you can study anytime, anywhere.
Clock Quiz
Learning App for Kids
A quiz app for children to learn how to read clocks in a fun way. Designed with a simple design and intuitive UI so children can intuitively understand how to read analog clocks.
KaizenLab
Hypothesis Canvas Management Tool
A web service that supports hypothesis-driven agile development. Structure your team's decision-making and validation processes through hypothesis canvas creation and management. Covers the full PMF validation workflow including project management, persona design, interview recording, and verification tracking.
Settle Map
Compare Japanese municipalities by disaster risk, land price, and climate
A web service that aggregates flood, tsunami, landslide, earthquake probability, land price, climate, and distance-to-city data for all 1,892 Japanese municipalities from primary sources such as the National Land Numerical Information, the Hazard Map Portal, J-SHIS, and the Japan Meteorological Agency, and lets you compare them on a single map. No composite score is computed. Only raw values with their units and sources are shown. From each municipality's detail view you can jump straight to its vacant-house bank and relocation pages.
KVS Bot
LLM × Value Investing Auto-Trading Bot
A Japanese stock swing trading bot combining Tatsuro Kiyohara's value investing methodology with Anthropic Claude qualitative analysis. Runs a fully automated pipeline from screening through LLM analysis, signal generation, and auto-trading. Live trading results are publicly shared on the public dashboard.
Focusnest
Your switch for entering focus mode
An iOS app that lets you mix white, brown, and pink noise with natural sounds like rain, streams, campfire, and waves to create the perfect sound environment for focus, relaxation, and sleep. Integrates mixing, presets, and a Pomodoro timer so you can enter your ideal focus state with a single tap. Features 1/f fluctuation for natural sound variation and works completely offline.
In development
Storyteller
AI Autobiography App
An app where AI acts as an "interviewer," collecting life experiences from the parent generation through voice interviews and automatically generating autobiographies, profiles, and stories that can be passed down to family. Just by talking, your life becomes a book.
Real Estate Investment Simulator
Cash Flow Analysis Tool for Property Investment
A web tool for easily simulating the profitability of aged apartment and detached house investments. Supports automatic calculation of gross and net yields, cash flow and ROI computation, customizable vacancy and expense rates, and loan condition inputs. Also features result saving and URL sharing.