Sothis.

A calm daily compass.

The sky, your numbers, and the rhythms of your day — held in one calm place.

For people who like astrology but don't want to be yelled at.

Become a Founder · Capped at 500

DIARYTest each readingKeep your own score

Now live on both stores. £29.99 lifetime tier, capped at 500.

THE IDEA

A cabinet of celestial instruments.

Sothis is a suite of small celestial tools — an antique astrolabe with a real Sun at its centre, a 2.5D orrery of the classical wanderers, a numerology hub with a celestial pinball reveal, hand-drawn constellation traces from 1822 star atlases, and four private rhythms that meet you where you are.

Each one made carefully. All quiet by default. Together, one daily reading you can choose to follow — or quietly disagree with.

A TOUR OF SOTHIS

A tour. Tap what calls you. Or don't.

01 · BEAUTY

The living sky

The Wheel. A photoreal antique astrolabe with the Sun at its centre. A gold beam marks the current season; a violet beam marks your sign.

The kind of birthday that lasts a month.

Sky Today. A tilted 2.5D orrery of the classical wanderers — Moon, Mercury, Venus, Mars, Jupiter, Saturn, Sun. Tap any planet to fly it forward and read what it's doing today.

This Season's Sky. The Summer Triangle, the Winter Hexagon, and the seasonal figures. Real asterisms overhead, drawn from the 1822 star atlases.

02 · IDENTITY

Your place among the stars

Born under a star. On the day you were born, the Sun stood before one of twelve constellations. Which of its bright stars was nearest? Sothis tells you honestly — and offers one small poetic thought.

Map the sky. Trace all twelve zodiac constellations and four landmark figures — sixteen in all — with your finger onto a wheel of the year. Complete the wheel and the road lights up: the Sun walks it once a year — yours included.

03 · PLAY

Numbers revealed

Your Core Numbers. Life Path, Soul Urge, Personality, Birthday — the four your birth name and birth date hold. Each with a full reading.

Your Destiny Number. Revealed through a celestial pinball table — launch a comet through the planets, and your Destiny Number blazes up.

Four to read. One to earn.

Destiny Number 5 revealed on the celestial pinball table

04 · PROOF

A day you can test

Today. A daily verdict — what kind of day, not what to do. Cycles, sky, and one small reading written for who you are.

Diary. Log yesterday's outcome. Watch your hit rate build. Over weeks, you'll know whether the readings match your real days.

Calendar. Your biorhythm curves, moon phases, and cycle days on a single grid. TOP days, sensitive days, and quiet days visible at a glance.

Sothis says. You test.
The Diary keeps score.

An anonymised Diary with a 79 percent hit rate

05 · INTIMACY

Your private rhythms

Cycles. Body, emotion, mind — and if you'd like, the oldest cycle too. Four quiet rhythms drawn from your birth date, plus the menstrual rhythm if you have one.

◌Encrypted at rest. Nothing to subpoena.

Couple Mode. Add your partner. See your two rhythms side by side — and the days where they meet.

An anonymised Couple Mode for Ivy Moon and Leo Moon

WHEN THE SKY READS QUIET

And when the sky reads quiet.

Breathe. A tuned, three-minute breathing screen. Unlike the rest of Sothis, this one isn't symbolic — slow breathing genuinely steadies your nervous system.

On the days astrology feels too abstract to help, this one actually does.

The sound is tuned, not random — a soft middle-C ping over a singing-bowl bed an octave lower. Every note is a C, all in octaves and fifths. Pure consonance, made to sit calm in the ear.

WHY SOTHIS IS DIFFERENT

For people who like astrology but don't want to be yelled at.

Calm by design.

No push notifications you didn't ask for. No "the universe is angry today" headlines. No streaks to keep up. The app is quiet until you open it.

Honest about the science.

Biorhythms aren't medicine. Astrology isn't fate. Numerology is older than your name. Sothis tells you this clearly, then offers a reading anyway — as a story to think about, not a verdict to obey.

Real astronomy underneath.

Real planet positions. Real moon phases. Real spectral star colours. Real 1822 constellation engravings. What Sothis says the sky is doing today is what the sky is actually doing.

Private by design.

Birth details, diary entries, partner info, cycle logs — kept on your device by default. Cycle data is encrypted at rest. There's nothing on our servers for anyone to subpoena.

Ad-free, always.

No ad pixels. Landing-page analytics via GA4, cookies with your consent. No trial that needs your credit card upfront. No wellness-data selling. Sothis makes money from Founders and subscribers, not from you.

HELD HONESTLY

Held honestly, through every season.

Most cycle apps break in the seasons of your life when your rhythms change most. Perimenopause. Postpartum. Post-hormonal-contraception. Sothis doesn't. Variable is normal. Bodies pass through seasons.

Your rhythms — honestly held. Through every season, including the ones other apps get wrong.

PRICING

Pricing.

Sothis is free to install and try. Fourteen days full access. After that, the essentials stay free — or unlock everything monthly, yearly, or forever.

FREE AFTER TRIALSUBSCRIPTIONONE PAYMENT · LIFETIME

FREE AFTER TRIAL

Free forever

£0after your 14-day trial

Your daily compass.

Today — a calm daily verdict and reading
Your three rhythms — physical, emotional, intellectual
The oldest cycle — private, encrypted, on your phone, off any time
Breathe — a tuned three-minute grounding practice
Calendar — the week around today
Diary — log your days and watch your own hit rate build

No time limit. No asterisk. No rug-pull.

Install Sothis

SUBSCRIPTION · 14-DAY TRIAL

Premium

£4.99/month£39.99/year

The observatory.

The Wheel — a photoreal antique astrolabe with a real Sun at its centre
Sky Today — the seven classical wanderers; tap any planet and fly it forward
Constellations — trace sixteen hand-drawn figures, map the sky, find the star the Sun stood before on the day you were born, and see this season's sky overhead
Your Numbers — four to read, one to earn
Couple Mode — two rhythms side by side, and the days where they meet
The traditions — four ancient lenses, rotating daily
Every deeper view — the 90-day calendar map, the sky-note journal, free-text diary entries, filters, the long lookahead

14-day free trial when you install. Cancel anytime — keep the free essentials, no rug-pull.

Start 14-day trial

ONE PAYMENT · LIFETIME

Founder's Edition

£29.99 oncePremium forever

Everything in Premium — forever
Couple Mode included
Founder badge in your profile
Early access to new features

A one-time purchase, not a subscription. Once the lifetime places are gone, the tier disappears — Founders keep their access regardless.

Capped at 500

Install to become a FounderCurrently available in-app only. Install the app and buy from the paywall.

Start tonight.

Live on both stores. Made in the UK, made with care.