The astrology planner
built from your birth chart.
Sidera reads over 200 planetary aspects against your birth chart every day, then shows you the days worth waiting for and the ones that ask for patience.
The stars have always had an audience
From Wall Street to the White House, consequential decisions have long kept one eye on the sky.
"Virtually every major move and decision the Reagans made was cleared in advance with a woman in San Francisco who drew up horoscopes."
Donald Regan
White House Chief of Staff, on Ronald Reagan's presidency
"Millionaires don't use astrology, billionaires do."
J.P. Morgan
Financier who consulted astrologer Evangeline Adams
Three ways to read your sky
Built by astrologers who believe the chart deserves better than a paragraph and a lucky number.
Daily Cosmic Weather
Three scores each morning: favorability, intensity, quality. Plus life-sphere breakdowns for the day ahead.
The Cosmic Calendar
A color-coded planner. Green days for action, amber for caution. Search 100+ activities to find the right window.
AI Astrologer
Ask anything. The AI reads your chart, knows today's transits, and answers with the specificity of a private consultation.
Your day, written in stars
Favorability, intensity, and quality scores, personalized to your birth chart. Life-sphere breakdowns for work, love, health, and social life. Every morning. The whole picture.
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 location of birth.
See your month at a glance
A color-coded calendar that reveals peak days and challenging windows. Filter by favorability, intensity, or quality. Select any day to see detailed insights for that moment in your chart.
Ask the stars anything
Voice or text, chart-aware answers, available around the clock. The AI holds your entire chart in mind. Ask about a contract, a first date, a restless week. It answers with the specificity of a private consultation.
The right day for anything
Search over 100 activities and let the cosmos show you when to move. First date, job interview, product launch. Set your filters and Sidera finds the windows that work best for your chart.
A practice as old as the written word
Five thousand years of observation. Now, measured against your chart each morning.
of Americans
consult astrology at least once a year, according to Pew Research.
Planetary Aspects
analyzed against your chart every day to produce your personalized calendar.
of Millennials
believe in astrology, according to a Harris Poll study.
Ancient observation. Modern precision.
Your chart is calculated from the exact positions of the planets at your moment of 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. Written 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 major decisions. Western astrology, paired with an AI that reads your chart the way a private astrologer would.
The free tier includes your daily cosmic weather, natal chart, and core insights. Sidera Pro opens past and future day viewing, deeper AI readings, unlimited conversations with the astrologer, and the full Find Best Date feature. Pro is $9.99 per month or $49.99 per year.
Western (Tropical) astrology. Your chart is calculated using the precise positions of the planets at your exact moment and location of birth.
Sidera calculates over 200 planetary aspects daily against your complete chart: all planets, houses, and aspects. Every insight is specific to your celestial fingerprint. This is not a generic sun-sign forecast.
A color-coded planner that marks favorable and challenging days based on your chart and current transits. You can search over 100 activities to find the right window for a job interview, a first date, or starting a new project.
Yes. Your birth data is encrypted and stored securely. Sidera does not share personal information with third parties. Your chart belongs to you.
Sidera is available on Google Play and as a web app at app.sideraai.com. The iOS app is coming soon. Your chart, daily readings, and the AI astrologer are accessible from any device with a browser.
The sky has something to say about your week.
Your chart is already written. Sidera helps you read it.
Your daily reading, by email
A short note each morning about what the sky is doing and what it means for the week ahead. Free, from Sidera.
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