Sidereal
The sky remembers you.
Your birth chart, cast from the real positions of the planets. A Seer who knows it by heart, reads today's sky against it, and explains every word it uses.
New to astrology? Learn the sky first — it's free to wander.
Your chart
Cast from the sky, not from a table.
Give the Seer the moment and place you were born and it computes the whole wheel with the Swiss Ephemeris — the same planetary maths professional astrologers use. Every body at its true degree, every house, every aspect drawn at its actual angle.
Then it hands you the wheel itself. Tap any planet and the chart turns to it; tap a term you don't know and its lesson opens over the page.
The Seer
Somebody to ask, at three in the morning.
Ask a question in your own words and get a reading in plain ones. The Seer knows your chart, the sky as it stands today, and what you've told it before — so you never start from scratch, and it never answers as though it has just met you.
It glosses as it goes. When a reading says Saturn square Venus, both terms are doorways: one tap and you learn what they mean on your own wheel, not somebody else's.
Today's sky
The transits, read for you each morning.
The sky keeps moving after you're born, and where it lands on your chart is what astrologers call a transit. Sidereal casts a reading for today, one for the week, and one for the month — each about your chart in particular, not a horoscope written for a twelfth of the world.
Your circle
The people you're trying to understand.
Add the people who matter — a partner, a mother, the friend you keep circling the same argument with. Sidereal casts their chart beside yours and reads the synastry: where you meet easily, where you grind, and what each of you is actually asking for.
Learn
Free to wander, chart or no chart.
The signs, the houses, the planets, and the aspects — each one drawn rather than described, at its true angle. You don't need an account to read any of it, and if you do have one, every lesson lights up with your own placements.
Where we stand on AI
Sidereal uses AI to answer your questions, and we'd rather say so plainly than have you find out. We're not using it to do the thinking for us — we use it as a teacher, one that knows real planetary mathematics and can explain them patiently.
Once you've asked, it's up to you whether to heed the answer. Intuition takes precedence here; trust your gut and your own gifts. Not everyone can afford a professional reading — this is a way to learn what you need to know without one.
What it costs
Start free. Pay when you want to ask.
Free
$0
- Your natal chart, cast in full
- Readings for today, this week, and this month
- 3 follow-up questions in each reading
- Everything in Learn
Individual
$8.99a month
or $89.99 a year
- Everything in Free
- Seekings — bring the Seer a question of your own
- Follow up as long as the conversation wants
- Your circle, and the synastry between you
Your first 7 days are free, and cancelling takes one tap. Bought on the web, Stripe handles the card and we never see it; bought in the app, Apple bills it and you manage it in your Apple subscription settings.
Questions people actually ask
I don't know my birth time.
You can still cast a chart — the planets' signs will be right. The houses and your rising sign depend on the time, so those stay uncertain until you find it. A birth certificate usually has it; so, often, does whoever was in the room.
Is this the same as the horoscope in a newspaper?
No. A newspaper horoscope is written for everyone born under one sign — a twelfth of the world at once. Everything here is computed from your own moment and place, which is why two Leos get entirely different readings.
Do I have to believe in astrology?
No. Plenty of people use it the way they'd use a good question: something to think against. The maths is real whatever you make of the meaning.
Who can see what I tell the Seer?
You. Readings are encrypted at rest and reachable only from your own account, we don't train models on them, and we don't sell anything. The privacy policy says exactly what goes where.
Can I get my data out, or delete it?
Both, from your account settings, without asking anybody. Export gives you everything; deletion means deletion.