From your first chart to deeper questions
Get to know your birth chart, explore your daily reading, or understand a relationship. Start with the card that interests you.
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A map of the sky when you were born. Find your Sun, Moon and rising sign, and learn what each one means in astrology.
You’ll need your birth date, place and time if you know it. You can mark the time as unknown.
Today’s sky, compared with your own birth chart. Explore daily themes for luck, love and focus.
See my daily readingReading two birth charts together is called synastry. Explore attraction, emotional needs and communication, without reducing a relationship to a single score.
Explore relationship compatibilityWhat is a Moon sign? What do houses and aspects mean? Learn the basics at your own pace, with plain-language guides.
What is astrology?Explore transits, your birthday chart and question-based astrology. These guides explain each method and its limits.
Explore on the web. Take it with you on Android. Free download; Astro-Plus is optional.
For the endlessly curious / 35
From your birth chart to your relationships. From the Moon's phases to life's bigger cycles. Start with what you know. Follow what you don't.
35 guides · showing 6
How the four layers of a chart — planets, signs, houses, aspects — combine into one reading. Also covers what the birth time actually controls, and how a timezone error can move an Ascendant by a whole sign.
Explore the guideLearn the different questions answered by your Sun, Moon and rising signs. See what birth time changes, then find all three in your free chart.
Explore the guideA practical map of all twelve houses, from identity and resources to partnership and public life. Learn why birth time and house system matter, then calculate your own cusps free.
Explore the guideSee how today's sky meets your birth chart. Calculate your chart for free, then read your own luck, love and focus guidance.
Explore the guideThe Moon changes sign every two and a half days, so two people born on the same date share a Sun sign and often not a Moon sign. When the birth time matters, and why this keeps getting confused with the phase.
Explore the guideWhat appears when two natal charts are laid over each other: whose planet lands in whose house, which aspects create pull and which create friction. The guide also shows why compatibility refuses to collapse into a single score.
Explore the guideSaturn returns to its natal position on an approximately 29.4-year cycle. Learn why retrograde motion can produce repeat contacts and where to find your natal degree, without a promised personal date.
Explore the guideThe rising sign and houses depend on birth time and place. Rising times vary by latitude, so compare charts for the possible times rather than applying a fixed rule.
Explore the guideYour birth chart is fixed; transits compare it with today's sky. Learn what an orb means, why planets move at different rates and the general timing of cycles such as a Saturn return.
Explore the guideUnderstand Mars as a traditional symbol of action and assertion, then find its sign, house and aspects in your free birth chart.
Explore the guideCalculate natal Jupiter free. If your birth hour is unknown, see both signs on a boundary day and keep interpretation separate from prediction.
Explore the guideCalculate natal Saturn free. If your birth hour is unknown, see both signs on an ingress day without confusing a placement with a return date.
Explore the guideFind your North and opposite South Node signs free. Understand the mean-node method, sign boundaries and missing birth-time limits.
Explore the guideCalculate your geometric MC sign and degree with a recorded hour and city. Learn why it can differ from the tenth-house cusp.
Explore the guideWhich planets were apparently retrograde when you were born? Check eight planets free with honest station-day uncertainty.
Explore the guideSeparate natal Mercury from a retrograde transit, then read its sign, house and aspects together in your free birth chart.
Explore the guideLearn how the Descendant begins the seventh house, why an empty house is ordinary and why it cannot promise a marriage. Calculate your own house cusp for free.
Explore the guideLearn how the tenth house relates to public role and direction, when its cusp differs from the Midheaven, and why an empty house is ordinary. Find your cusp in a free chart.
Explore the guideLearn the real angles behind conjunction, sextile, square, trine and opposition. See how orb works and how Baby Astro shows calculated aspects in your chart.
Explore the guideCalculate your Venus sign here for free. No birth time? See if Venus changed signs that day, then learn what the result means.
Explore the guideMercury does not go backwards; we only see it that way. How the station is computed, what a retrograde planet means natally, and the things retrograde does not do.
Explore the guideCompatibility tables read one placement: the Sun. What carries a relationship is the Moon, Venus, Mars and Ascendant — and a real reading compares two charts rather than two signs.
Explore the guideThe stretch where the Moon makes no further aspect before changing sign. Why the length is a question about an hour rather than a day, how the times are computed by crossing rather than tolerance, and why the app declines a horary reading during one.
Explore the guideA phase is really an angle: the distance between the Sun and the Moon. The eight phases, illumination, the 29.5-day cycle, and how the phase differs from the Moon's sign.
Explore the guideCalculate the Moon phase at your birth from date, time and city. No time? See both possibilities on a phase-boundary day, and how phase differs from Moon sign.
Explore the guideIn the classical tradition you cast a chart for the moment a question is asked, and read the answer from that chart. Step by step: how to phrase the question, which house rules what, and when a chart counts as unreadable.
Explore the guideA composite chart is a third chart derived from the midpoints of two natal charts — the chart of the relationship itself. Synastry asks what runs between you; the composite asks what the two of you are as a unit. This guide keeps the two apart.
Explore the guideElectional astrology is the technique of choosing a favorable moment to begin something. Whether the Moon is void, what the rising sign is doing, which planet stands strong — you learn what makes a date good or bad for a given start.
Explore the guideOnce a year the Sun returns to its exact natal degree, and the chart of that moment describes the year ahead. How a solar return is cast, what a loaded house signals, and how to read the whole thing against your natal chart.
Explore the guideYour natal chart drawn onto the world map: every planet casts lines on the map where it dominates. The guide covers how to read what a city brings out in you from those lines, and how the technique is used for moves and travel.
Explore the guideThe money houses — 2nd, 8th and 10th — mark the axis of earning, debt and career in a chart. You learn which placements describe spending, saving and appetite for risk. Not investment advice; an introduction to how a chart talks about money.
Explore the guideVenus describes what you find beautiful; the Ascendant, how you come across. This guide covers how color, texture and style leanings are read from those two placements — and why they are leanings, never rules.
Explore the guideThe classical tradition pairs each sign with a region of the body and each planet with a function. We cover the role of the 6th house and the Moon in that reading, and state the tradition's limit plainly: none of it is medical advice.
Explore the guideNew Moon for intentions, Full Moon for closure: the eight phases of the lunar cycle and what each traditionally means. The ritual calendar in the app runs on the same phase math — its dates and prompts come from here.
Explore the guideCalculate your baby's Sun, Moon and rising signs for free, and see what stays uncertain if the birth time is unknown. We treat astrology as a reflective language, not a verdict on a child's health or development.
Explore the guideThe astrology journal
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Your birth date, place and time, if you know it.