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EsperOwl
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Flagship · iOS & Android

The astrology app that reads your own birth chart.

EsperOwl watches the sky against your chart: today's transits with their orbs, what is coming in the weeks ahead, the best days to act, and answers to your questions — calculated on the Swiss Ephemeris, even offline.

  • Chart library
  • Transit timeline
  • Best-day planner
  • Compatibility
  • Ask the Owl

Free to download. Your own chart is free for good.

EsperOwl's Today screen: the Moon's degree and sign, void-of-course status, the next lunation and today's transits to a birth chart

Inside the app

Everything your chart is doing, in one astrology app

Not a sun-sign horoscope. Every screen in EsperOwl is calculated from your own birth date, time and place, and shows the placement, the orb and the date it comes from.

  • Arcsecond

    Swiss Ephemeris precision

  • Offline

    Charts and transits computed on the device

  • 5 languages

    English, Español, Deutsch, Français, Português

  • iPhone · iPad · Android

    One account across all of them

EsperOwl Today screen with the live Moon, retrogrades and the transits to a birth chart

01Today

A daily horoscope built from your own transits

Today opens on the Moon's exact degree, whether it is void of course, the next lunation and every transit touching your chart right now — each with its orb and the minute it goes exact.

  • Live Moon, void-of-course and retrograde status
  • Your transits, applying or separating, with exact times
  • A daily reading written from those transits
EsperOwl natal chart wheel with houses, aspect lines and planetary glyphs

02Birth chart

A birth chart accurate to the arcsecond, even offline

Cast your natal chart and the charts of everyone you care about: the wheel, the Big Four, every placement with its house, the aspect grid and chart balance — computed on the phone with the Swiss Ephemeris.

  • Placidus, Whole Sign, Koch and other house systems
  • Aspects with exact orbs, dignities and minor aspects
  • An unknown birth time is marked, never guessed
EsperOwl transit timeline: a 30-day intensity chart and a dated list of exact transits

03Transit timeline

See which transits are coming, weeks and months ahead

A month of transits to your chart at a glance, with the peaks marked in gold and every exact hit listed by date — supportive or challenging — so you can plan rather than react.

  • Week, month, year and outer-planet views
  • The exact date and time of every hit
  • A reminder before a transit goes exact
Ask the Owl chat answering whether this is a good month to ask for a promotion, citing the transits

04Ask the Owl

Ask an AI astrologer about your own chart

Ask in your own words — about work, love or timing. Ask the Owl answers from your actual placements and the transits running now, and shows the aspects it read from, so you can check the working.

  • Answers cite the transits behind them
  • Five free questions every day
  • Your conversations saved to your account
EsperOwl best-day planner: a month calendar ranked strong, workable or avoid, with the reasons for the best day

05Best days

Find the best day to launch, sign, travel or rest

Pick what you are planning and the month is ranked against your chart — strong, workable or avoid — with the reasons the best day wins: the Moon's condition, the rulers and any hard contacts.

  • Electional astrology, made practical
  • A month ranked against your birth chart
  • Save the chosen moment as an event chart
EsperOwl synastry screen with attraction, ease and longevity scores and the cross-aspects between two charts

06Compatibility

Synastry and compatibility, with every aspect shown

Compare your chart with a partner, a friend or your family. See attraction, ease and longevity, every cross-aspect with its orb, and the house overlays — your Venus in their 7th, their Moon on your Ascendant.

  • Synastry, composite charts and a family circle
  • Cross-aspects ranked by strength
  • House overlays in both directions
EsperOwl astrocartography map with planetary MC and Ascendant lines across the world

07Astrocartography

An astrocartography map of where your planets rise

Your planetary lines on a world map — where Venus culminates, where Jupiter rises — with the cities on each line and what the line is traditionally read for. Then cast your chart relocated to any of them.

  • Benefic, career and love filters
  • Cities on each line, with the distance
  • Relocated charts for any city

iPad

Made for iPad, too

Two panes on the larger screen: your chart beside its readings, Today beside the hour-by-hour plan — in portrait or landscape, with the same account as your phone.

Free to start. No sun-sign filler.

Download EsperOwl free. Your own chart, the live sky and five Ask the Owl questions a day stay free. Premium adds timing — the exact minute a transit perfects, the best days in a month — plus chart comparisons and transit alerts.

EsperOwl on iPad: the Today screen in a two-column layout with a side menu

What Today shows you

Open the app and Today is a single scroll through the sky as it touches you. Each card below is built from your own chart and your own location, and a card with nothing to say simply is not there.

  1. 01

    Your day, hour by hour

    Your best planetary hour still ahead, a timeline of the day with the Moon's void-of-course stretches marked, and a one-tap mood check-in. A daily streak keeps it honest, and it works without an account.

  2. 02

    Daily draw

    One tarot card a day, face down until you turn it over. The reading is the card's own meaning, framed by where the Moon is today.

  3. 03

    Coming up

    A live countdown to the next notable transit to your chart, with a reminder 30 minutes before it goes exact.

  4. 04

    Your people today

    Of the people you have saved, the one today's sky presses on hardest, a plain suggestion for the day, and a way to send them today's sky.

  5. 05

    Look up

    The best thing to see in the real sky in the next 24 hours from where you are: the Moon beside a planet, a meteor shower, a thin crescent. Set an alarm for the best moment.

  6. 06

    Your week

    Seven days of intensity at a glance, with the high point and the hard day flagged.

  7. 07

    A 60-second lesson

    A short spoken lesson chosen by what is in today's sky, with a ring that tracks your progress through a 12-lesson beginner track. A transcript sits alongside, so it works on mute.

Questions about the EsperOwl app

Is EsperOwl a free astrology app?
Yes, to download and to use for your own chart. The live sky, your transits and five Ask the Owl questions a day are free. Premium adds timing tools, chart comparisons and transit alerts; nothing you were given free is taken away.
How accurate are the charts and transits?
Positions come from the Swiss Ephemeris, the data set professional astrology software uses, to arcsecond precision. The app computes them on your device and is tested against the same server that drives this site, so a transit time in the app matches the one here.
How is this different from a daily horoscope app?
A daily horoscope is written for one twelfth of the world at once. EsperOwl starts from your exact birth chart and reads today's transits against it, so two people born on the same day but at different times see different days.
Does the app work offline and without a birth time?
Charts and transits are calculated on the phone, so they work offline; written readings and Ask the Owl need a connection. Without a birth time the planets are still right, and the houses and Ascendant are marked as unreliable rather than guessed.
Which devices and languages does EsperOwl support?
iPhone, iPad and Android phones and tablets, in English, Spanish, German, French and Brazilian Portuguese. One sign-in works across all of them and on this site.

Your chart, watching the sky for you

Install EsperOwl on iPhone, iPad or Android. Sign in once and every chart you save follows you between them and this site.