Novastrum

Astrology, precisely calculated.

Novastrum combines its own calculation engine with a workspace for astrologers, personal horoscope reports and an API for your own applications.

Order a horoscope Open Novastrum Expert

Products

One sky, several ways in: for daily work with clients, as a personal gift or as a building block in your own application.

  • Novastrum Expert

    The workspace for astrologers: client files, natal charts, transits, synastry, appointments and reports.

    app.novastrum.io · in the browser

  • Novastrum Editions

    Personal horoscope reports as PDF and the monthly forecast by subscription.

    editions.novastrum.io · shop

  • Novastrum API

    Calculations, chart graphics and interpretations for your own website or app.

    docs.novastrum.io · documentation

  • Novastrum Cosmos

    Daily horoscope and moon phases for iPhone and Android.

    In development

  • Novastrum SkyWatch

    What is in the sky right now: planets, the Moon and coming events.

    In development

  • Novastrum VR

    Your own chart as a sky you can walk through.

    In development

What you can rely on

  • Precisely calculated

    Positions, houses and aspects come from our own calculation engine. Where only an approximation is possible, it says so.

  • In your language

    Novastrum Expert is available in German, English and every other European language.

  • Fair

    Subscriptions can be cancelled online at any time, without a phone call or detours.

For developers

The Novastrum API calculates charts, draws them as SVG and returns interpretations, over HTTPS and JSON. Ready-made building blocks exist for WordPress, Shopify and any website. Access on request.

Read the API documentation 
curl -X POST https://api.novastrum.io/api/v1/calculate/moon-phase \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"datetime": "2026-10-04T12:00:00Z"}'

{ "phase_name": "Last Quarter", "illumination": 39.37,
  "moon_sign": "Cancer", ... }