About

HoroscopePrompt started from a simple idea: AI is great at wording and synthesis but poor at computing ephemerides; so this tool feeds it exact data and lets it do only what it's good at.

It supports personal and relationship charts, an annual chart (solar return), transits and a chart of a given moment. It runs entirely in your browser on a custom calculation core (NASA/JPL DE440), sends no data to a server, and the prompt is anonymous by default. You can install it as an app (PWA) and use it offline.

Ephemeris data source: NASA JPL DE440 (public domain).

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