Daily cosmic weather
Three scores each morning — favorability, intensity, quality — plus a breakdown for work, love, and health.
Personalized astrology planner
Find the right day for anything that matters.
Sidera reads your birth chart against today's sky and marks your best days — to launch a business, sign, decide, or begin. Free, right in your browser.
Free to start · No credit card · Works in your browser
June 2026
Score
Peak
High
Average
Low
Start with your birthday
See your best days in 2026
The stars have always had an audience
“Virtually every major move and decision the Reagans made was cleared in advance with a woman who drew up horoscopes.”
“Millionaires don't use astrology, billionaires do.”
Queen Elizabeth I·J.P. Morgan·Ronald Reagan·Theodore Roosevelt
What you get the moment you're inside
Built by astrologers who believe your chart deserves more than a paragraph and a lucky number.
The cosmic calendar
A color-coded planner. Gold days for action, dim days for patience. Search 100+ activities to find your window.
AI astrologer
Ask anything. It reads your full chart and today's transits and answers like a private consultation.
See my best days
Free forever · Pro from $9.99/mo
Compatibility
See how your charts meet
Compare birth charts with someone close to you and see the bond as a score, support patterns, growth edges, and the timing that brings the connection into focus.
86% aligned
Growth edges
Shared timing
Check compatibility
Daily insights
Your day, written in stars
Favorability, intensity, and quality scores, personalized to your birth chart — with life-sphere breakdowns for work, love, and health. Every morning, the whole picture.
Work & Money
Love
Health
See today's reading
Birth chart
Your cosmic signature
Every planet, house, and aspect mapped and decoded with AI. Your Rising sign, Sun, Moon, and the full picture of who you are — drawn from your exact moment and place of birth.
See your chart
Cosmic calendar
See your month at a glance
A color-coded calendar that reveals peak days and challenging windows. Filter by favorability, intensity, or quality — then tap any day for the detail behind the score.
See your calendar
AI astrologer
Ask the stars anything
Voice or text, chart-aware answers, around the clock. The AI holds your entire chart in mind — ask about a contract, a first date, a restless week, and it answers like a private consultation.
“Is today a good day to ask for a raise?”
“When should I launch my business?”
Ask the stars
Find best date
The right day for anything
Search over 100 activities and let the sky show you when to move — a launch, a signing, a first date, an interview. Set your filters and Sidera finds the windows that fit your chart.
Find your best date
A practice as old as the written word
Five thousand years of observation — now measured against your chart each morning.
30%
of Americans
consult astrology at least once a year (Pew Research).
200+
planetary aspects
read against your chart every single day.
83%
of millennials
say they believe in astrology (Harris Poll).
Ancient observation. Modern precision.
Your chart is calculated from the exact positions of the planets at your birth. The AI reads it the way a skilled astrologer would.
Your natal chart
Precise planetary positions at your exact birth moment and location — the foundation of everything Sidera tells you.
Real-time transits
Over 200 aspects tracked daily. The sky is always moving — and so is your calendar.
AI interpretation
Complex aspects translated into clear, specific guidance — in a voice that respects your intelligence.
Common questions
Sidera is a precision astrology planner. It calculates your natal chart from your exact birth data, overlays real-time planetary transits, and shows you the best days for love, career, wellness, and big decisions — Western astrology paired with an AI that reads your chart the way a private astrologer would.
Yes. The free tier includes your daily cosmic weather, your natal chart, and core insights — no credit card required. Sidera Pro adds past and future day viewing, deeper AI readings, unlimited conversations, and the full Find Best Date feature for $9.99/month or $49.99/year.
No. Sidera runs right in your browser at app.sideraai.com — sign up free and your chart is ready in under a minute. Prefer an app? Sidera is also on Google Play for Android.
Western (tropical) astrology. Your chart is calculated using the precise positions of the planets at your exact moment and location of birth.
Sidera reads over 200 planetary aspects daily against your complete chart — all planets, houses, and aspects. Every insight is specific to your chart. This is not a generic sun-sign forecast.
Yes. Your birth data is encrypted and stored securely. Sidera does not share personal information with third parties. Your chart belongs to you.
The sky has something to say about your week.
Your chart is already written. Enter your birthday and Sidera reads it for you — starting with the days that matter most.
Today's cosmic weather
Your personalized daily reading, waiting each morning — not a generic sun-sign forecast. The whole chart, the real picture.
Read today's horoscopeYour daily reading, by email
A short note each morning on what the sky is doing and what it means for your week ahead. Free, from Sidera.
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