FAQ
Questions, answered.
Is this just horoscopes?
No. A horoscope is written for everyone with your Sun sign at once, about a twelfth of everyone alive. Danu reads your whole chart (all thirteen bodies and points, by degree, in your houses) and today's sky against it.
Does ChatGPT just make up my horoscope?
No. Danu calculates your chart and today's transits in code with the Swiss Ephemeris; the AI never calculates a position. Fixed rules, not the AI, decide which transit matters most. Then an AI model (Anthropic's Claude) writes the reading from those facts, inside rules people wrote: no fate, no certain predictions, no medical, legal or financial advice, no invented famous charts. Danu shows you the placements behind the reading, so you can check her. See how Danu works.
Is Danu a person?
No. Danu is an AI astrologer. She'll tell you so if you ask, and she never pretends to be human. The person who answers for her is Kenton Tilford, Danu's founder. Meet the founder.
How precise are the calculations?
Exact to the minute of arc. Planetary positions come from the Swiss Ephemeris, which is derived from NASA JPL's planetary ephemerides, with the tropical zodiac and Whole Sign houses. The methodology page publishes a chart you can check against any ephemeris. See the methodology.
Is astrology accurate?
Astrology isn't a science, and Danu doesn't claim it predicts events. Two things are worth separating: the calculation, which is exact, and the interpretation, which is a reading of a symbolic tradition offered for reflection. Danu names the placements and transits behind a reading, so you can judge whether it fits.
Do you store my birth data?
The preview on the homepage computes your chart without saving it on our servers; your browser keeps what you typed for up to a week so you don't have to retype it at sign-up. If you make an account, your chart is saved to your account so Danu can keep reading it — and you can delete it anytime.
What if I don't know my birth time?
You'll still get a lot — your signs and most placements. Your houses and rising sign need a time; you can add it later when you find it.
Is it free?
Yes — five messages a day with Danu, your full chart, and daily transits, plus your natal introduction, a read of your whole chart, free. Premium ($9.99/mo or $79/yr) unlocks unlimited conversations and your whole Circle, plus three reports on topics you choose in advance each morning.
Can Danu replace a human astrologer?
Different tool. Danu is available at any hour, knows your chart cold, and tracks your transits daily. For deep, ongoing work, see a human. Danu will never pretend to be one.
How is Danu different from Co-Star and other astrology apps?
Danu reads your whole chart by degree, ranks today's transits by fixed rules, shows you the contacts behind a reading, and ends every reading with something to do. See the full Danu vs. Co-Star comparison.
Does Danu predict the future?
No. Danu tells you what the sky is doing to your chart, when, and what that tends to mean. She doesn't predict events or tell you your fate. Transits are pressure and possibility; what you do with them is yours.
What astrology system does Danu use?
Whole Sign houses, the tropical zodiac and the Swiss Ephemeris, with every orb published on the methodology page.
Still curious? Ask your own chart.
See what it’s saying — then keep Danu in your pocket.