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In developmentConsumer SaaS

Zodiq

Premium astrology platform for Western and Vedic systems — subscription SaaS with a calculation core whose accuracy is verified against external references.

The problem

Astrology applications are strikingly often inaccurate, and nobody checks. Offering Western and Vedic systems side by side means getting ayanamsa, house systems and timezone conversion right — otherwise not a single result holds up, and it never even shows.

Our approach

ZODIQ separates calculation from presentation: a dedicated FastAPI service is the only place that touches the Swiss Ephemeris, and the web app calls it and renders. Positions are verified against independent references — IAU equinoxes and solstices for 2025 within 0.02°, and a full natal chart against Skyfield/JPL DE421 with under 0.3 arcseconds of deviation on the inner bodies. Row-level security on every user-scoped table, billing through Stripe.

Live preview

A lean reproduction of the actual interface — interactive, no login.

This is the replica. We'll show you the real thing in 30 minutes — request a demo.

Highlights

  • 01

    Astronomical core in a dedicated calculation service — the web app never computes on its own

  • 02

    Accuracy verified externally: IAU equinoxes 2025 (0.02°) and a natal chart against Skyfield/JPL DE421 (< 0.3″)

  • 03

    Western and Vedic with correct ayanamsa, house systems and timezone conversion

  • 04

    Row-level security on every user-scoped table plus a cross-tenant test; subscriptions via Stripe

Stack

Next.js 15FastAPINeon PostgresSwiss Ephemeris

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