Frequently asked questions

Is it free?

Yes. Computing the chart and building the prompt runs for free right in your browser. The interpretation itself is then written by your chosen AI in your own account — subject to its terms and limits.

Which AI should I use?

Any. For Claude and Perplexity the prompt pre-fills directly; the others (ChatGPT, Grok, Le Chat, Gemini, Meta AI, Copilot, DeepSeek) copy the prompt and open their page — just paste it.

Do I have to enter a name?

No, the name is optional. The prompt is also anonymous by default — the name is included only if you turn off anonymization.

Do I have to enter the birth time?

No, but the reading is much better with it. Without the time there are no houses or ASC/MC axes and the Moon's position is only approximate — so the interpretation is more general and less accurate (it misses house-related themes in particular). If you know the time, definitely enter it.

What can it do besides the natal chart?

A relationship chart (synastry), an annual chart (solar return) for a chosen year, transits to the natal chart at any moment, and a chart of a specific moment.

How accurate is it?

Positions match professional NASA/JPL ephemerides (agreement with Swiss Ephemeris ~1″).

Is my data safe?

Yes. Everything is computed in your browser; nothing goes to a server. The date, time and place are never included in the prompt; the name only if you turn off anonymization yourself.

Can I install it as an app?

Yes, it's a PWA — choose “Install” in your browser. After the first load it also works offline.

Which years are supported?

1950–2030 by default; for dates outside, a wider 1900–2100 set is loaded automatically.