Clavius uses a user's birth date, birth time, and location to create a natal chart. It then expands that chart into several astrology and divination features, including natal chart analysis, compatibility, daily horoscope, tarot guidance, chat analysis, and soulmate-style portrait output.
Main features
- Natal chart analysis: Clavius creates a chart from birth date, time, and location.
- Compatibility reading: users can add another person's details to explore astrological compatibility.
- Daily horoscope: the app provides daily messages based on the sky.
- Tarot guidance: tarot readings are included for future questions and decisions.
- Chat analysis: users can share conversations to explore relationship dynamics.
- Soulmate portrait: the app offers a soulmate-style visual output tied to the broader astrology framing.
Product Introduction
Clavius is built around a familiar astrology promise: birth details can be used to understand personality, potential, relationship patterns, and timing. Its natal chart module gives the app a stronger base than products that only generate a portrait from a few loose prompts.
The compatibility and chat-analysis features are the more interesting parts. Compatibility uses another person's chart details, while chat analysis tries to connect actual conversations with relationship dynamics. Tarot and daily horoscope keep the product useful for repeat visits, especially when users want a quick reading rather than a full chart session.

