Stellaris-13 Seeker Edition (Free)

The world's first dual-method 13-sign astronomical chart calculator.

Stellaris-13 uses real IAU constellation boundaries — not the simplified 12-sign tropical zodiac — to show you where the Sun, Moon, and planets actually were when you were born. For the first time, Ophiuchus takes its rightful place as the 13th sign.

THE SEEKER EDITION INCLUDES:

◆ Natal Chart Calculator — Full birth chart with all planets, asteroids, and angles using both Standard 13-Sign and IAU Astronomical methods. See your real sky.

◆ Transit Engine — Current planetary transits mapped against your natal chart. Know what's active right now and what's coming.

◆ Synastry Calculator — Compare two charts side-by-side. Aspect tables, compatibility scores, and the connections between any two birth moments.

◆ Past Life Reading — South Node analysis, karmic signatures, and evolutionary intent based on your natal placements.

◆ Unlimited Use — No daily limits. No expiring trials. This is yours.

◆ Bring Your Own API Keys - get interpretations of your placements. Supports <istral, Claude, Fireworks, 01, Groq, and Ollama.

Built with the Swiss Ephemeris (the same engine used by professional astrologers worldwide), running entirely on your machine. Your birth data never leaves your computer.

This is real astronomy applied to astrology. No subscriptions. No data harvesting. Just the sky, computed correctly.

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Stellaris-13 is a desktop application for Mac, Windows, and Linux.

Requires Python 3.10+ and an internet connection for initial setup only.