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Pet Astrology · No Birthday Needed

Your pet has a
birth chart

Aetris maps your dog or cat's Sun, Moon and Rising, and when the birthday is unknown, estimates them from behavior. Start with their birth date.

No birthday? Ten behavior questions in the app estimate the whole chart.

★★★★★ 5.0 from our first reviewers · now on iPhone and Android
A Siamese cat and a golden retriever sitting in front of a golden zodiac wheel
☉ Sun · Leo☽ Moon · 🔒 in the app↑ Rising · 🔒 in the app
Bonus · their Star Beast
See why in the app →
Harmony
77
Attuned
Today's Oracle
The Venus Embrace oracle card
The Venus Embrace
0
Star Beasts
12 signs × 4 moon phases
0
Oracle cards
in the daily deck
0
Behavior questions
when there's no birthday
0
Daily Harmony points
rebuilt every morning
The Three Lights

Sun, Moon, and Rising — the sacred trinity

Who they are, what they feel, and how they meet the world. Read from ten questions about how they behave, so no birthday is needed, and written for your pet alone — never a widget that rotates fortune-cookie text.

Aetris Pet Soul screen: Soul Reading, marked no birth date needed, above Ask Vela, the Ritual of Alignment, Sanctuary, Moon Atlas and Synastry
Aetris pet profile for Harry, a husky: Scorpio Sun, Taurus Moon and Leo Rising around his photo, with his lineage, the Lunar Weaver
No birthday neededTen behavior questions
☉ Sun · ☽ Moon · ↑ Rising
No Birthday Needed · Soul Reading

No birthday?
No problem

Most rescue pets arrive without a birthday. Aetris asks ten questions about how your pet behaves and works out their Sun, Moon and Rising from the answers. It's a reading of how they live, not a recovered birthday.

01

Answer

Ten questions in three short acts: four for the Sun, three for the Moon, three for the Rising.

02

Light

Each answer points to an element or a mode, and together they light each sign. AI writes the words, not the signs.

03

Read

Sun, Moon and Rising, with a profile written for your pet and a star passport to keep.

04

Refine

Tell the app how their days really go. The nightly ritual and the Bond score learn from it.

0
Questions instead of a birthday
Know the birthday? Add it too. Don't? The ten answers are enough on their own.
The Daily Harmony

The chemistry between you, rendered

One number for today, built from three things: your sign read against theirs, where the Moon sits tonight, and what you logged about the day they actually had. It moves every morning — and until you have logged anything, it says so rather than inventing a bond it never measured.

Aetris home screen for Lilly, a grey British Shorthair: Daily Harmony Attuned, 77 out of 100 and up 11 since yesterday, split into Zodiac, Lunar and Bond, above How was Lilly today?
Aetris evening ritual for Harry: the stars said Calm, you saw Curious, and both go into his Moon Atlas, with why the stars chose Calm
Moves every morning
Three partsSigns · Moon · your log
The Daily Oracle

One card, drawn from their chart

Every sunrise, a new card — channeling Mars, Moon, or Venus. Added to your Grimoire forever. Collect Cosmic Dust through daily rituals. Legendary cards arrive only with the sky: a full moon, an eclipse, Mercury turning retrograde.

Aetris oracle card — The Silver Feline, Moon archetype
Aetris oracle card — The Fiery Phoenix, Mars archetype
Aetris oracle card — The Venus Embrace, a legendary Venus card
The Star Beast

One of twelve signs. One of forty-eight beasts.

Twelve families, four beasts in each — and the moon phase on the day they were born names which of the four is theirs. Every Scorpio is a Scorpion, a Panther, a Snake or a Raven; the sky already chose. Birth date alone is enough, no birth time. Yours is named too, and the two are read as a pair.

Aetris Grimoire bestiary: twelve Star Beast families, with the Wolf, Cheetah, Honeybee, Swan, Panther, Stag, Mountain Goat and Owl already caught
Aetris Star Beast pair: the owner’s Swan beside Harry’s Panther, read as Close Orbit, with where the two flow and where they clash
Scorpio familyFour beasts, one is theirs
1 of 48 Star Beasts
Today
"Luna seeks closeness today. A day for shared rituals and gentle presence — her Cancer Sun is energized by the waxing moon."
Free · No signup

Your pet's Sun sign in 30 seconds

Try the Pet Zodiac Calculator — a taste of what Aetris reveals in full.

Try the Calculator →
Gold art-nouveau zodiac wheel emblem with a cat and dog curled inside a paw print
A typical scene
A dog found on the street, with no papers and no birthday. Ten questions about how he greets strangers, rides out a storm and plays — and the app drafts his Sun, Moon and Rising, and says plainly that it is an estimate.
★★★★★
5.0 on Google Play
See it in action

Every screen, celestially crafted

Tap a screen to see it full sizeClick a screen to see it full size

Aetris app — No Birthday Needed: a Jack Russell terrier on a cushion beside Mila's profile, a Leo Sun with a Pisces Moon and Gemini Rising
Aetris app — 10 Questions, No Birthday: a grey British Shorthair reaching a paw toward the first Soul Reading question, What lights Mila up the most?
Aetris app — How In Tune Are You Today: a woman and two ginger cats on a sofa beside the home screen, with Daily Harmony at Steady, 69 out of 100
Aetris app — The Stars Guess, You Answer: a terrier next to a jar of glowing lights, beside the evening ritual asking How was Mila today?
Aetris app — Ask Why They Do That: a grey cat resting on a blanket beside Ask Vela answering Why is Mila so clingy this week?
Aetris app — You and Your Pet, One Sky: a golden retriever under a wolf constellation beside a Star Beast pair, the Wolf and the Cheetah, read as Eclipse
Aetris app — Collect the Cards of Their Sky: a black cat beside a gold sun-and-moon card and the Grimoire open on The Silent Moon, card 1 of 21
Aetris app — Do They Really Get Along: a golden retriever and a grey British Shorthair beside Synastry for Mila and Luna, Eclipse at 89 out of 100
Lantern Membership

Begin free. Ascend when ready.

Most of Aetris is free, for good. Lantern adds the reasoning, the planning and every pet in the house.

Cosmic
Free
Forever · one pet
  • Sun, Moon and Rising from ten behavior questions — no birthday needed
  • Daily Harmony and the Ritual of Alignment
  • Star Beast for you and your pet, and the Bestiary
  • A daily oracle card and the Grimoire
  • Moon Atlas and the Lunar Calendar
  • Ask Vela — two questions a day
  • Your own horoscope and birth chart — the Human Oracle
Lantern Weekly
$2.99/ week
Renews every week · cancel anytime
  • Everything in Cosmic
  • Every pet in the house — and Synastry for every pair
  • The Primordial Lineage — your pet's line, in full
  • Best Days — plan the good nights
  • Weekly Alchemy — your week, read back
  • Why the stars chose it — every night
  • Ask Vela — fifteen questions a day
Eternal Connection
$34.99once
One payment · never renews
  • Everything in Cosmic
  • Every pet in the house — and Synastry for every pair
  • The Primordial Lineage — your pet's line, in full
  • Best Days — plan the good nights
  • Weekly Alchemy — your week, read back
  • Why the stars chose it — every night
  • Ask Vela — fifteen questions a day
  • Yours for good — no renewals to manage

Every Lantern plan unlocks the same features · prices in US dollars; the App Store and Google Play show the price in your currency before you pay · purchases restore on a new device

Questions

Everything you need to know

My pet has no birth certificate. Can Aetris still work? +
Yes — and this is precisely why Soul Reading exists. Most rescue animals, strays, and shelter pets have no known birth date. Aetris asks ten questions about how your pet behaves, in three short acts for the Sun, the Moon and the Rising, and works out the three signs from the answers. AI writes the words, not the signs. It is a reading of how your pet lives, not a recovered birth date. No birth date required.
Is this actually personalized, or just generic horoscope content? +
Every profile is written for your pet's own Sun, Moon and Rising combination, and the daily score reads their sign against yours. The Daily Harmony score is rebuilt every day from the Moon's phase and what you logged about your pet's day.
What does Lantern add to the free app? +
Lantern adds six things. Every pet in the house: a Soul Reading and a passport for each companion, and Synastry for every pair, where the free app reads one pet. The Primordial Lineage: your pet's full line, with a chronicle written from your answers. Best Days: pick the night for the vet, a trip or training, with a reminder the evening before. Weekly Alchemy: the full reading each time the vial in the Moon Atlas fills. Why the stars chose it: the reasoning behind every sealed guess in the Ritual. Ask Vela: fifteen questions a day to the app's pet astrologer instead of two. Members also find the rare oracle cards in every day's draw and get a one-time Legendary welcome card. The Monthly plan starts with seven free nights the first time you subscribe, and the app reminds you on night five, before the first payment.
What is the Grimoire and how do I earn Cosmic Dust? +
The Grimoire is your pet's atlas of twenty-one oracle cards, next to the Bestiary of Star Beast families. Legendary cards arrive only with the sky, during a full moon, an eclipse or a Mercury retrograde, on every plan. Cosmic Dust is earned, never bought: daily rituals and streaks add to it, and longer streaks pay more. Spend it to light your pet's Sanctuary, or to recover a broken streak.
How does the Daily Harmony Score work? +
It is one number from 0 to 100 for each pet, built from three parts: up to 30 points for how your sign sits with theirs, up to 40 for where the Moon is in its cycle that day, with a small signature of its own so two pets in one home never score the same, and up to 30 for the bond, taken from what you told the app about their days. Until you log anything, the bond part is marked as not measured. Daily Harmony is free.
Which animals does Aetris support? +
Dogs and cats first, plus rabbits and birds, and an Other option for every other companion. When the birthday is unknown, Soul Reading works out the chart from ten behavior questions.
Is my pet's data private and secure? +
Your data sits in a database where each account can read only its own records. To write the readings, your pet's details (name, species, signs and behavior answers) are sent to Google's Gemini AI. The app also collects anonymous usage statistics and crash reports through Firebase. You can delete your account from inside the app, and that removes your pets, profiles, journal, cards and the account itself. The full list is in our privacy policy.
Cosmic Wisdom

From the stars

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From the fiery independence of Aries to the dreamy depth of Pisces — how your cat's Sun sign shapes their quirks and way of showing love.

March 5, 2026 · 6 min readRead more →
Soul Reading

Pet Astrology for Rescue Animals: No Birth Date? No Problem

How ten behavior questions estimate a pet's chart when there's no birthday to go on.

Feb 28, 2026 · 5 min readRead more →
Moon Signs

The Moon Sign Guide for Dog Owners

Your dog isn't being unpredictable — they're responding to the moon. A practical guide to reading lunar phases and their effect on mood and energy.

Feb 20, 2026 · 7 min readRead more →
✦ ✧ ✦

Meet them,
under the stars

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