Celestial mechanics

Astrology as a measuring instrument

Psychomantic crosses planetary positions, transits, lunar cycles, and synchronicities to map your temporal climate. Exact astronomical calculations using the NASA JPL DE440 ephemeris.

Free plan • Developer API • GDPR-compliant data

< 10 arcmin
Planetary precision
~2.8 ms
Latency per calculation
DE440
NASA JPL ephemeris
100%
Proprietary engine
Multi-system

A modern esoteric aggregator

Astrology, lunar cycles, synchronicities: cross-reference the signals in one place.

Detailed Natal Chart

Planetary positions, houses, aspects, and dominants calculated with NASA JPL DE440 ephemerides.

Real-time Transits

Track current planetary movements and their interactions with your natal chart.

Astrocartography

Visualize your planetary lines on a world map and discover where your configurations resonate strongest.

Asteroids

Chiron, Vesta, Juno, Pallas and more, interpolated at 1-day steps for high precision.

Developer API

REST API documented in OpenAPI, API key authentication, quotas and integrated Stripe billing.

Data Sovereignty

100% proprietary engine, no dependency on Swiss Ephemeris. Complete account deletion compliant with GDPR.

How does it work?

Three steps, zero jargon.

1

Your information

Enter your date, time, and place of birth. The engine calculates your exact celestial fingerprint.

2

Your chart

Planetary positions calculated to less than 10 arcminutes on the NASA JPL DE440 ephemeris.

3

Your reading

A structured analysis of your configurations translated into clear language.

Free at launch

Psychomantic will be free for everyone

Natal charts, transits, synastry, solar return, astrocartography, asteroids: all modules will be accessible without a credit card.

Unlimited charts
All modules
Cloud saves

Frequently Asked Questions

What you should know about Psychomantic.

What is Psychomantic?
Psychomantic is a high-precision astrology engine that calculates planetary positions, transits, astrocartography, and asteroid influences from NASA JPL DE440 astronomical ephemerides.
How accurate are the calculations?
Planetary positions are calculated with sub-arcminute precision using NASA JPL DE440 ephemerides. Asteroids are interpolated at 1-day steps to minimize error.
Will Psychomantic be free?
Yes. Psychomantic will be free at launch. All astrological calculation modules will be accessible without a credit card.
How is my data protected?
Your data is stored securely. You can request account deletion at any time, in compliance with GDPR. Psychomantic does not use Swiss Ephemeris: the engine is 100% proprietary.
What makes Psychomantic different from other astrology tools?
Unlike many tools that depend on third-party libraries like Swiss Ephemeris, Psychomantic uses a custom astronomical engine based on NASA JPL DE440 data. This guarantees precision, technological sovereignty, and flexibility for future development.

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