Stellaris-13 : Seeker [desktop/free]

See where the planets actually were when you were born.

Most astrology software still draws the sky with a simplified 12-sign tropical wheel. Stellaris-13 uses real IAU constellation boundaries — including Ophiuchus as the 13th — so the chart matches astronomy, not a convenience map.

Seeker is the free forever desktop edition. No trial clock. No daily cap. Your birth data stays on your machine.

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WHAT YOU GET

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• Natal charts — planets, points, free asteroids, angles

Tropical · Standard 13-sign · IAU astronomical (side by side)

Cosmic Wheel houses (Stellaris’s 13-house system), with classic 12/13 options for (im)purists

• Transits — what’s active against your natal chart, with adjustable orbs and multiple days

• Synastry — Romantic compatibility between two natal charts

• Intersynaction — Relational narrative between any two profiles (parent/child, employer/employee, two strangers, etc), with real-time transit awareness

• Resonance Prescriptions — stellium-seeded musical/vibrational mapping

• Cosmic Weather Scanner — real-time severe weather alerting from planetary configurations

• Chart chat & interpretations (BYOK) — 3 free preview turns of multi-turn AI conversation grounded in your chart (unlimited in Astrologer edition)

Bring your own keys (e.g. Gemini, Mistral, Groq, OpenRouter, Claude-compatible endpoints, Ollama for fully local). No Stellaris API bill.

• Full offline local use (after initial setup)— compute as much as you want

Built on the Swiss Ephemeris (the same class of engine professionals rely on), running on your computer. We don’t host your chart. We don’t sell your data (we dont even store it).

This is real astronomy applied to astrology. No subscriptions.

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PREFER PHONE OR NO INSTALL?

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Free browser edition (lighter; great on mobile):

https://stellaris-13.pages.dev/app/

Use the web client to try the sky. Use Seeker when you want the full desktop instrument offline, Swiss-grade math, and local AI (Ollama).

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WANT THE FULL PRACTICE TOOLKIT?

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Astrologer edition unlocks unlimited AI Chart Chat (no 3-turn cap), crypto/market timing tools (BTC, ETH natal charts + transits + synastry), and the rest of the paid toolkit

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PLATFORM

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Desktop app for Windows, macOS, and Linux.

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

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FIRST LAUNCH

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Windows: unzip → double-click Stellaris-13-Seeker.exe → browser opens.

Linux: unzip → chmod +x Stellaris-13-Seeker → double-click (or run from terminal) → browser opens.

Mac: unzip → right-click app → Open → confirm once in Gatekeeper → browser opens.

If the browser doesn’t open, check the terminal/log window for the local URL (usually http://127.0.0.1:…).

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HONEST SCOPE

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Seeker is free and powerful — including Resonance Prescriptions and Cosmic Weather. The Astrologer upgrade unlocks unlimited AI Chart Chat (vs 3 free preview turns) and the crypto/market timing toolkit.