Astrology That Knows
What It's Talking About
AI-powered astrology grounded in 2,000 years of Hellenistic tradition. Deep natal analysis, ancient timing techniques, and electional astrology — all in conversation.
Built Different
Most astrology apps give you a paragraph from a database. Chaldea gives you a real astrologer's analysis — powered by AI, grounded in tradition.
14-Layer Synthesis
Not a keyword lookup. A true multi-layer analysis engine that weighs sect, dignities, Time Lords, Lots, and hundreds of traditional factors — then synthesizes them into coherent insight.
Time Lord Techniques
Annual Profections, Zodiacal Releasing, Decennials — the ancient timing techniques that reveal the chapters of your life. Know what period you're in and what's coming.
Electional Astrology
Find the best time for anything. Purpose-built rulesets scan upcoming windows and grade them — avoiding pitfalls like void-of-course Moon and malefic aspects.
Grounded Knowledge
Every answer is backed by the most comprehensive traditional astrology corpus ever assembled. Thousands of hours of expert scholarship, properly cited.
Multi-Chart Sessions
Load up to 4 charts, compare, overlay transits, and let the AI reference everything in context. Your astrology research desk.
Hellenistic Precision
Built on the techniques of Vettius Valens, Dorotheus, and the ancient tradition — not pop astrology. Real technique, properly applied.
How It Works
Enter Your Birth Data
Provide your date, time, and place of birth. Chaldea calculates your complete natal chart using precise astronomical ephemeris data.
AI Analyzes Your Chart
Our 14-layer synthesis engine examines every meaningful configuration — sect, dignities, Time Lords, Lots, and hundreds of traditional factors.
Ask Anything
Have a conversation with an AI that actually understands Hellenistic astrology. Every answer is grounded in traditional technique and sourced scholarship.
What People Are Saying
From students to professional astrologers — Chaldea is changing how people interact with their charts.
"Finally, an astrology app that actually knows what Zodiacal Releasing is."— Traditional Astrology Student
"The synthesis engine caught configurations in my chart that I'd missed for years."— Professional Astrologer
"I asked about my annual profection and it knew to check the lord of the year. Impressed."— Hellenistic Astrology Enthusiast
Ready to Go Deeper?
Stop settling for surface-level horoscopes. Chaldea brings the depth of Hellenistic astrology to your fingertips.
Start Your Reading