9 Principles for Building a 200-Page SaaS Solo — The Jibun Kaisha Framework

9 Principles for Building a 200-Page SaaS Solo — The Jibun Kaisha Framework Why Decision Principles Matter at Scale Jibun Kabushiki Kaisha ("Your Own Corporation") is a Flutter Web SaaS that integrates features from 21 competitors — Notion, Evernote, MoneyForward, Slack, X, Amazon — into one app. With 200+ pages and one developer, I face the same decisions a CEO does, every day: "Should I add this feature?" "Is this automation doing too much for the user?" "Will this KPI pull us away from the re