Saju × Astrology Report Service 'Byeoljari Saju'

A one-person web service that calculates saju (Korean Four Pillars) and astrology from a birth date, then delivers personalized reports drafted by AI and reviewed by hand.

2025 – presentPlanning · Design · Development · Operations (solo)
Saju · zodiac at onceFree calculator
AI draft → review → deliveryReport production

What I built

Service name: 'Byeoljari Saju'. A free calculator that instantly works out the Four Pillars, the balance of the five elements and the Sun · Moon · Rising signs from birth date, birth time and city, plus a paid in-depth report based on those results.

  • Free saju × astrology calculator, free compatibility check, content pages for the 10 day masters
  • Calculation results passed to AI for a report draft, reviewed and edited in the admin, then delivered to the customer's account
  • Point top-up payments, push notifications to the admin for new orders
  • Code-generated post images and scheduled posting for Pinterest · Instagram

The demo site is a portfolio version with payments, sign-up and personal data storage turned off.

How I built it

  • Vibe-coded with Claude (Claude Code), deployed with Astro · Cloudflare
  • Features described in small pieces, then fixed while checking the results on screen
  • Calculation accuracy secured first with Korean calendar and astronomy libraries; interpretation text written by AI and reviewed by a person
  • Serverless on Cloudflare Pages · Functions · KV to keep running costs minimal

Results

[Results to add — e.g. total orders, time saved per report]