Blog
#Side Project
12 post(s)
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Let AI Draft the Monthly Report, Keep the Final Call for Yourself — Why Michinari Never Auto-Submits
Facing a monthly report or biannual review, you can't recall what you actually did this period. Michinari, my side-project app, generates monthly and biannual report drafts from your daily work logs, but never trusts its own self-assessment blindly and always leaves submission to you by hand.
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Ending the Kind of Reading You Forget Instantly — How Michinari Turns Logs Into an Asset Without Quotas
You read a book but forget the content, with no sense that the time you spent is adding up to anything. Michinari's reading feature logs entries with no page-count requirement and no quota, has AI surface connections across past entries, and generates a summary-and-insight report when you finish.
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Falling Behind Doesn't Break the Plan — Why Michinari's Exam Schedule Never Piles Up
A certification exam study plan usually breaks the moment you fall behind, because the missed workload piles onto tomorrow. Michinari, a side-project app, instead rebalances daily quotas across the remaining time, tracks rest days, logs progress separately from understanding, and has AI analyze the outcome afterward.
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From Plans That Never Survive Contact With Reality to an App You Just Follow — Why I Built Michinari
After years of study plans, reading habits, and work logs falling apart, I built Michinari — an app where AI re-plans your schedule daily and reflects on your logs with you. This covers where the name comes from and the design idea behind letting a system carry the planning so you can focus on execution.
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AI That Implements Without Hesitation — How to Write a 20-Section, 3,500-Line Design Doc
Publishing the structure of the design doc that reduced 16 person-days to 2 hours in AI-driven development. The roles and priorities of 20 sections, and the 'must-write' points for each.
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16 Person-Days of Development Done in 2 Hours — Design Doc Completeness Determines Speed
In a personal project, AI-driven development completed 16 person-days of work in 2 hours. The biggest factor wasn't AI speed — it was the completeness of the design document that eliminated all decision-making.
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Get to Know Teppei Suyama in 5 Minutes — A Guide to This Site
A navigation map for first-time visitors to quickly understand who Teppei Suyama is — career, dreams, philosophy, side projects, and the shortest routes to each section of this homepage.
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"The Testing Phase Disappeared" — AI-Driven vs Traditional Development Compared
A developer with zero Flutter experience used Claude Code to ship a production app in 3 weeks. This article compares every phase — from planning to testing — with real data showing 6-9x faster delivery and 6x higher test density.
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YumeHashi v2.1.0 — 4 Things I Did to Stretch Firestore's Free Tier
Running my Flutter Web app YumeHashi at zero monthly cost, I implemented 4 cost optimization measures in v2.1.0 — gzip compression, extended debounce, compact JSON, and size monitoring — to delay exceeding Firestore's free tier.
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From "YumeLog" to "YumeHashi" — Building a Bridge Between Dreams and Reality
The story behind renaming my personal app from YumeLog to YumeHashi, the 3-step design philosophy (write, break down, keep going) for turning dreams into action, and why I keep building despite zero revenue.
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YumeHashi's Tech Stack and 5 Implementation Challenges Solved by v2.1.0
A deep dive into the serverless architecture (Flutter Web + Drift + Riverpod + Firebase) behind YumeHashi, a side project running at zero monthly cost, and 5 real implementation challenges solved with code.
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I Launched My Homepage — Consolidating Scattered Information into One Place
I built a personal homepage with Astro v6, GitHub Pages, and AI-driven development. Here's why I consolidated my career, skills, products, and blog into a single site, and what I hope to achieve.