Astrology isn’t about 12 signs. It’s about you.
Cosmirella is an AI astrology assistant that does the math first. It reads your exact chart, the charts of the people in your life and what you’ve told it — so the reading is about your week, not one-twelfth of the planet’s.
Where everything is
Positions to the arcminute. Rx marks a planet in apparent retrograde.
This morning, about 680 million people got your horoscope.
A newspaper horoscope sorts eight billion people into twelve boxes by birthday. But the Moon moves about 13° a day and the rising sign changes roughly every two hours, so two people born on the same day can have charts that barely resemble each other.
Generic forecasts aren’t astrology done badly. They’re barely astrology at all. Cosmirella is for people who take the system seriously and are tired of the shortcuts — and of the people selling them.
The AI interprets. It never calculates.
Language models are good writers and unreliable mathematicians. A one-degree error can move a planet into a different house and turn the whole reading around. So the work is split.
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Calculate
Your birth date, time and place go through Kerykeion, an open-source chart engine built on the Swiss Ephemeris. Every position, house cusp and aspect is computed by code — not guessed by a model.
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Ground
Each calculated placement is matched against a curated library of astrological meanings, so the interpretation starts from a defined source instead of whatever a model half-remembers.
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Remember
What you share stays in context: the argument last Tuesday, the job you’re weighing, the deadline you dread. Readings connect the sky to the life you’re actually living.
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Interpret
Only then does the AI write — in plain language, with the placements behind each insight available for you to check.
Your mother is not your date.
Add up to ten people with their birth details and tag each relationship. The tag decides what a reading is allowed to talk about — so a chart comparison with your sister never drifts into romance.
- Partner
- Attraction, intimacy, how you fight and how you make up, and the long-term rhythm between you.
- Family
- The roles you learned early, the arguments that keep coming back, and how to hold a boundary without a rupture. No romantic or sexual framing, ever.
- Colleague
- Decision styles, where communication jams, and when to pitch an idea versus when to wait.
- Friend
- What each of you brings, and where expectations quietly differ before they turn into distance.
For anyone in your circle, look ahead a week or a month: where things are likely to flow, and where they’re likely to snag.
Short, specific, on your schedule.
- +Write the hard message before you say it out loud.
- +Finish the thing you started on Monday.
- –Don’t sign anything you only skimmed.
Based on your transits today and what you told us about the contract.
Example of the daily card. Yours is calculated from your own chart.
- Do’s and don’ts, every dayTwo or three concrete actions drawn from your transits — on your home screen widget, without opening the app.
- Notifications when you want themPick the hour. Night owls don’t get pinged at 8 a.m.
- Notes to your future selfSee a difficult stretch coming months out? Leave yourself a note; it arrives on the day.
- Unknown birth time is fineWe calculate for noon and tell you which parts of a reading depend on the exact time. Switch house systems, including Placidus and Whole Sign, whenever you like.
- iOS and Android, same day, same featuresNobody gets the second-class version.
Questions
Is this a horoscope app?
Not in the newspaper sense. There are no sign-of-the-week forecasts. Everything is calculated from your full chart and the charts of people you add, and interpreted in the context of what’s happening in your life.
Doesn’t AI make things up?
It can, which is why it never handles the math. Positions, houses and aspects come from a calculation engine; meanings come from a curated reference library; the AI’s job is to put them into plain language for your situation.
I don’t know my birth time.
You can still use Cosmirella. Without a time we calculate for 12:00 noon and flag the parts of a reading — mostly the rising sign and houses — that depend on knowing it.
What happens to my email?
We use it only to tell you about early access and the launch. It’s stored with our email provider, Brevo, and every email has a one-click unsubscribe link. Details are in the privacy policy.
When does it launch?
We’re opening early access in waves, starting with people on this list. Joining now is the only way to be in the first wave.
Your chart, done properly.
Join the waitlist and get early access before the public launch.