lunabia
DE Coming soon
cycle . life . family

The cycle and parenting app that respects your privacy .

Your body. Your child. Your data. With a real Childfree mode, magical design and no tracking at all.

Without an account, everything stays on your device No account needed · No tracking, no ads, nothing passed on · We ask before we store

Notify me Coming soon to theApp Store Coming soon onGoogle Play
The app home screen: the cycle as a branch with a bloom, today day 14, fertile phase The switch in the app set to Childfree: cycle, calendar and history, nothing about pregnancy or babies Growth in the app: weight on the WHO curve with percentile, below it the choice between girl and boy The Child page in the app: age, milestones and buttons for feeding, nappies and reminders
Two modes, one app

You decide what the app shows

Not every woman wants a child, and not every woman who wants one has one yet. So Lunabia only shows what belongs to your life. Nothing is lost when you switch.

Childfree

For your cycle, without wanting a child.

  • Cycle, calendar and history on one page, with an estimated period and the cycle radar for energy, mood, skin and cravings.
  • How you feel, once a day with a single tap.
  • Inner Seasons: your cycle as four inner seasons, with an energy calendar, self-care roulette and partner sync.
  • Your Cosmos: Sun, Moon and Rising sign from your birth moment, with impulses from the path of the Moon.
  • Balance: Log symptoms of the hormonal transition, see patterns, take a report to your gynaecologist and breathe calmly with quick cooling at the very top during a hot flash.
  • Cycle & Life Master: a quiz, a comeback trainer, the journey of your body and a new question every day.
  • Not a single baby topic: no pregnancy, no baby months, no children in your profile.
Tabs in the app
HomeBodyKabinettCosmosProfile
My Baby

For trying to conceive, pregnancy and the first two years.

  • Your cycle with fertile days and an estimated ovulation, for trying to conceive, and because it comes back after the birth.
  • Pregnancy week by week, with kick counter, contraction timer, weight and hCG calculator.
  • The log for nursing, sleep, nappies and feeding, with one thumb. Home greets you at the very top with the day, the date and your name. In Child your child sits at the top, below it the feeding, nappies and reminder cards, then the sleep rhythm with its button and the daily log; the tabs sit right at the bottom.
  • Development, growth and moments from birth to the second birthday.
  • Let them know: In the estimated fertile phase you message your partner with one tap, and when your waters break your trusted people know after holding for two seconds. Via WhatsApp or SMS.
Tabs in the app
HomeBodyKabinettCosmosProfile

You pick the mode when you first start. The five tabs are the same in both, the mode decides what is inside them. You can change it any time under Profile, Epoche, at the far right of the bar.

Childfree

Your cycle, nothing else

For women who want to understand their body without the app talking about babies unasked. Cycle, calendar, history, your mood and games for your mind and everyday life.

Cycle

A day is more than a cross in the calendar

Every day holds what actually happened. Twelve things, all optional, all logged in two taps.

Bleeding Cervical mucus Basal temperature LH test Mood Skin Cramps Libido Energy Symptoms Sex Notes
  • Cycle, calendar and history on one page: at the very top a greeting with the day, the date and your name, then the days of the month to swipe, your cycle as a fine blossoming branch in the middle that follows whichever day you pick, and below it mood, day and period, one tap each. The month opens when you need it; every day in it shows whether your period was there or is expected, and a long press deletes a day, or several at once. Every period is kept in your history.
  • The prediction uses your cycles. From the second cycle on, your own average replaces the 28 days, and implausible gaps are left out.
  • The cycle radar splits your cycle into menstruation, follicular phase, high-energy phase and luteal phase, and shows what each can bring for energy, mood, skin and cravings. Once you have logged enough, from your own days, before that the typical pattern, and it tells you which of the two you are looking at.
  • What fits now: for every phase, ideas for career and projects, sport and movement, social life and me-time, and self-care. Tap another phase to see what next week holds.
  • Eight symptoms to choose from: headache, nausea, bloating, back pain, breast tenderness, cravings, poor sleep, dizziness.
  • Your board, here too. On Home, below the greeting, the cooling and the scratch card, lies the same board as in My Baby, with the same catalogue: cycle ring, next period, the hot flushes. The pencil at the top says what lies on it and in what order.
  • Nothing is required. An empty day is a valid day.
  • An estimate, not a contraceptive. Lunabia calculates your period and phases from your entries. They say nothing about which days you are protected, and the app makes no diagnosis.
Your cycle radar

Example: day 13 of 28, high-energy phase. Energy high, mood upbeat, skin calm, cravings rare.

Every day, in both modes

How are you today?

One question, five levels, one tap. It is not about the child, it is about you. After a few weeks there is a week to look at, and sometimes that is when you first see how you were doing.

  • On the Cycle page. The Mood card below the ring opens the question, in both modes.
  • Once a day is enough. If you have already answered, you are not asked again.
How are you today?

Your week from Monday to today: so-so, bad, good, so-so, phenomenal, good. Today is set to good.

Seasons

Inner Seasons

Your cycle as four inner seasons. You see at a glance when energy comes and when rest does you good, and plan around it.

  • Four seasons: inner winter for recovery and rest, spring for fresh starts and curiosity, summer for energy and company, autumn for focus and protected me-time.
  • Energy calendar: every day carries the colour of its season, and below it you see when the next one begins and what that means for your plans.
  • Self-care roulette: one tap, the wheel spins and stops at an idea that suits your season: a tea, a breathing exercise, a journaling prompt, music or movement.
  • Partner sync: a short note for your person on how much energy you have and what does you good today. Nothing about your body, the season only if you want. It is sent from your phone, Lunabia sends nothing itself.
  • An image, not a diagnosis. The seasons are estimates from your own entries. Every cycle is different.
Energy calendar

Example cycle: five days of inner winter, five of spring, seven of summer, eleven of autumn. Today is day 14, in summer. Below, the note for the partner: energy high, full of drive for something together.

Your Cosmos

Sun, Moon and Rising sign

From the moment you were born: who you are at your core, what moves you inside and how others see you. Plus three impulses every day from the path of the Moon. Try it here; in the app it has its own Cosmos tab.

  • Calculated precisely: Sun, Moon and eight planets with an astronomical ephemeris, local time with the daylight saving rules of your birth year.
  • Birth time unknown? Then you get Sun and Moon, and the Rising sign stays open instead of being guessed. If the Moon changed sign on your birthday, both are shown.
  • Impulses for today: Love, Career & Abundance, Vitality & Intuition, depending on how today’s Moon relates to your chart.
  • No third parties: The place search runs on our own server, and birth data is only calculated, never stored.
Your birth moment
Worldwide, villages too. Place, postcode or both, such as 90210 Beverly Hills.
Places: GeoNames, CC BY 4.0 Search for your place of birth and tap it in the list, then you can calculate.
Date, time and place go to our server only for the calculation and are not stored there. The result stays on your device. Astrology is interpretation, not science and not a forecast. Take the impulses as food for thought, not as advice.
Balance

Hormonal transition

Perimenopause and menopause, without guessing alone about your symptoms. Logging takes seconds, and you bring numbers to your gynaecologist instead of memories.

  • Log today: Hot flashes counted and by strength, sleep, mood, joints, brain fog and stress, each with one tap.
  • Patterns in your entries: whether a symptom is more frequent in the second half of the cycle, after stressful days or after bad nights, always with numbers. From fourteen logged days on.
  • Report for your doctor: the last 90 days as a PDF, with frequencies, hot flashes per week, cycle lengths and what stands out.
  • Quick cooling at the very top: a card of its own with a large button, separate from logging. One tap, and 4-7-8 breathing runs with a cool circle that breathes with you. Plus what helps to cool down.
  • In short: what happens to progesterone and estrogen, why sleep changes, when to see a doctor, and what is known about phytoestrogens, magnesium, vitamin D and omega-3, without promises.
  • Observation, not a finding. Lunabia counts along. Whether the transition has begun and what helps, your doctor works out with you. The entries stay on your phone.
Hot flashes, last four weeks

Example: four to five hot flashes on the days after high stress, otherwise none or one. Below it the pattern: after very stressful days on 9 of 9 days, otherwise on 6 of 17.

Play

Cycle & Life Master

Knowledge about your body, quick comebacks for everyday life and a new question every day. In the Cosmos tab under Play, only in Childfree; the scratch card sits on Home in both modes.

  • Body Quiz: twelve questions on hormones, period myths, endometriosis and your cycle. After every answer, a short insight explains why.
  • Comeback trainer: comments like “Who will look after you when you are old?” with answers to choose from, funny, confident or elegant. Plus why the long justification rarely helps.
  • The journey of your body: five chapters from birth to after menopause, with estrogen, progesterone, FSH, LH, hCG and oxytocin explained simply. Three questions every day as knowledge of the day, and your tree of life grows with every card you answer.
  • Question of the day: a new one every day, with a streak. Keep it going and you earn a bonus.
  • Scratch card of the day: beneath the question, a silver layer to scratch off. Underneath shines a single large symbol, a different one every day: lotus, crescent moon, sparkle star, heart chakra, crystal or sun. Plus a small impulse for you and points, between 20 and 100 each day.
  • Luna's Garden: an oasis of obsidian veined with gold, holding four flowers of glass: sleep, body, feeling and mind. Every morning they are thirsty and carry a few withered leaves. You rest your finger on a flower and water it with liquid golden light, you stroke the withered bits off its leaves, and it opens. Then it gives you a small tool: a breathing wave for falling asleep, a loosening for shoulders and neck, a moment to name your feeling, and the impulse of your cycle phase. In both modes, everything stays on your device. Butterflies of diamond light sail above the flowers: when your hand comes near, they startle and shed gold dust; when it rests, they settle on the open buds. Meanwhile the flowers pulse like a heart in the rhythm of your phase.
  • The oracle of the obsidian casket: a ritual beside the garden, under Cosmos, Rituals. A moon lock of gold sits on a casket of obsidian. You place your thumb on it, and for three seconds gold grows around the lock, in the rhythm of a calm heartbeat, until the lid slides open. Inside floats a glass sphere full of stardust; you draw it into the moon basin below. A wave of light dust bursts open, two butterflies of diamond light follow your finger and send ripples, and from the depths rises your amulet for today, with an engraved symbol and a sentence. It moves into the cabinet of amulets: there every day becomes a star, every lunar cycle a constellation.
  • The stone of letting go: Write what weighs on you today, and it burns as a golden engraving into a stone of obsidian. You pull it into dark water with your thumb and let go: it sinks, your word dissolves into rising gold dust and fades, three butterflies of diamond light arrive and send ripples as they circle, and a golden pendant with a sentence for today rises from the depths. Your word is never saved.
  • Points and rewards: stickers to collect and self-care cards, such as the warmth ritual or the saying-no card.
  • General knowledge, not a diagnosis. The explanations draw on the WHO, medical societies and studies. An expert review is still pending.
Question of the day

Example: When women live together, their periods sync up. The right answer is False, followed by the insight and ten points.

Scratch card of the day

A scratch card to try out. Under the silver layer shines the symbol of the day, below it the impulse: stretch for two minutes, arms up, then slowly to the side.

Try it: swipe over the silver with your finger or mouse.

My Baby

From trying to conceive to the second birthday

If you want a child, are expecting one or already have one, you get everything: the cycle, the pregnancy week by week and, for the first two years, a log that works with one hand. The pregnancy opens from its card on Home.

Pregnancy

Forty weeks, each with its own text

What happens this week, how big the baby is and what to keep in mind right now. Written for the evening, not for a lecture hall.

  • Nine months, forty weeks. Both, because doctors count in weeks and families in months.
  • All forty weeks to swipe through. A strip shows where you are and what lies in between; a tap jumps to any week.
  • The due date can be set six ways: last period, conception, a day 3 or day 5 transfer, an ultrasound, a measured length or the date you already know. You can change it later at any time, and nothing you entered is lost.
  • Weight comes along, as a curve with the range recommended for each week.
  • Kick counter and contraction timer. Count until ten movements add up, with your last runs as bars beside them. Time contractions with one thumb, from start to start as they do on the ward, with the pause running and a look at how close the last hour is to the rule of thumb. Anything tapped by mistake can be deleted. Both also sit whole on your board, so you do not have to open a page while a contraction is running.
  • All calculators in one card. Due date, IVF transfer, ultrasound with crown-rump length and hCG sit under Measure in one card with four tabs, each exactly once. If a pregnancy is running, one tap adopts the newly calculated due date.
  • The hCG calculator places a lab value in the range for its week and calculates the doubling time from two values. It says "within the range", never "normal", and stores nothing.
  • One bump photo per month. Nine pictures make a series you will only ever get once.
  • Knowledge grows with you. In Learn, your tree of life stands in a golden frame and blooms a little more each week. It sways gently, its blossoms glow, and butterflies in rose, moonlight blue and champagne fly around it, more the further it blooms. The milestones sit as buds on its ring; a tap jumps to their week. Below stand three glass pillars, Your baby, Your body and Mind & Soul; you pick one and swipe through the forty weeks. Which week is open is shown up top in a calm glass bar.
  • Your week sits large at the top, as “week 14+2” with the days until your due date, below it the baby in a glass bubble inside the golden frame, turnable in any direction with your finger. It floats and moves as it would on an ultrasound, depending on the week: from week 6 the heart beats, later your baby breathes, yawns and kicks. Below that, three fine lines for the three trimesters. The same bubble floats on the card you open the pregnancy with.
Week 24 of 40

Your baby is now about the size of an ear of corn and weighs around 600 grams. It hears your voice and already knows it.

2nd trimester 16 weeks to go
Week calculator

Which week, which due date?

Right after the positive test: the due date, your week and the key milestones, with your own cycle length. Try it here; in the app it’s part of adding your pregnancy.

  • Six ways: last period with your cycle length, conception, transfer, a known due date, and two ways via ultrasound: the weeks from the report or the measured crown-rump length in millimetres.
  • A comparison every week: the size of a raspberry, a mango, in the end a pumpkin. Roughly, because every baby grows at their own pace.
  • Milestones with dates: first heartbeat on ultrasound, second trimester, first baby movements, maternity protection and the due date.
Pregnancy week and due date calculator
Your cycle length
With a longer cycle, ovulation comes later and so does the due date; with a shorter one, earlier.
Estimated due date Today
1st trimester
2nd trimester
3rd trimester
Your baby is now about the size of Roughly, because every baby grows at their own pace.
Milestones
  1. First heartbeat on ultrasoundusually in weeks 6 to 7
  2. Second trimesterfrom week 13 + 0, the end of early pregnancy
  3. First baby movementsoften between weeks 18 and 22, often later with a first baby
  4. Start of maternity protectionin Germany six weeks before the due date
  5. Due dateonly a few babies arrive on exactly this day

A calculation, not an examination: your gynaecologist confirms or corrects the due date by ultrasound.

Quick notify

One tap, and your person knows

For two moments when nobody wants to type for long: when your waters break, and when the fertile days begin. The message opens ready-made in WhatsApp or your SMS app, for up to three trusted people.

  • Right on Home: As soon as a pregnancy is entered, “Waters broke” sits as a blue capsule at the very top of Home, right below the greeting. One tap opens everything for the moment: let people know, call, time contractions.
  • No false alarms: “Waters broke” only goes off after holding for two seconds. With a screen reader, the app asks explicitly.
  • Who hears what: The midwife hears about the birth, your partner about the fertile days too. The numbers stay on your phone.
  • Lunabia sends nothing itself: You send it from your messenger and can still edit the text first. No server, no location.
Waters broke For the moment it starts: your trusted people hear from you straight away.
Hold for two seconds until the capsule fills with light, so nothing goes off by accident.
Lunabia only lets people know and decides nothing. What to do now is for your midwife or the hospital to say.
Ovulation phase According to the estimate, your fertile phase is starting. Let someone know if you like.

The fertile phase is starting. Time for our moment together 🌙✨

WhatsApp · SMS
Stored only on this device, not on our server and not synced.
Log

With one thumb, even at four in the morning

Your child at the top, then three cards side by side: feeding, nappies and reminders. Below them the sleep rhythm with its button and the daily log; the tabs sit right at the bottom. Every button is a glossy picture in a light: warm for everything to do with feeding, violet for sleep.

  • Your board. On Home, below the scratch card, lie cards you pick yourself: milestones, pictures, your cycle, the counters of pregnancy. Everything the app can do is on offer, in both phases of life, and you set the order with the pencil at the top.
  • The day at a glance. Every entry appears in the daily log below the sleep rhythm with its time, nursing and sleep with their duration too. That day’s pictures and the milestones reached sit in there with them.
  • A feeding reminder you set yourself, in hours and minutes. Starting a feed clears it on its own.
  • Night warmth. From 10 pm to 6 am, a warm filter settles over the app: white and blue, which glare most in a dark room, turn warm, and black stays black. You can switch it off under Profile, Privacy.
  • The First Light. On first launch, a short tour guides you through the four pillars of the app: a golden ring settles around the scratch card, the tree of life, the emergency capsule and the cosmos with the Moon Circle, with two sentences next to each on what it is for. You can skip it at any time and watch it again under Profile with “Relive the app magic”.
  • The Moon Circle. A protected space in the Kabinett for your closest people: partner, sister, mother, friends. You invite them with a code, you write to each other live under your chosen names and answer with heart, moon, tear, warmth or flower. None of it is saved, neither on the server nor on the phone: whoever leaves the circle finds it empty next time.
  • The Silent Bridge. In the Moon Circle you can show your people an energy weather each day, such as “a time of retreat: needs gentle support and quiet today”. Nothing more goes out: no cycle day, no notes, nothing about your body. The weather is encrypted on your phone, you send the key yourself, and our server only sees unreadable text. It is part of Luna Sanctuary, the subscription for everything that runs through our server.
  • The Golden Ledger. Beneath the starry sky of your amulets you can bind a year or a pregnancy into a book to print: for each lunar cycle the constellation with your amulets and their sentences, plus milestones and your notes, in A5 with a dark cover and gold. It is made on your device, without photos.

How the buttons work

Sleep
Falls asleep Wakes up
  1. Moon and sun. The moon starts sleep, the sun ends it. The time runs underneath, to the second.
  2. When it's time again. From your entries, the card works out how long your child usually stays awake after waking up and shows roughly when it's time again. From five sleeps with a start and an end.
  3. The week. Seven bars for the last seven days, plus sleep per day, number of sleeps and the longest stretch.
Feeding
Nursing Bottle Solids
  1. Pick a side or the bottle. Left, right, bottle or solids: the chosen button lights up, and below it is what fits.
  2. Duration or amount, if you like. Minutes when nursing, 60 to 180 ml to tap for the bottle or any other amount. Save logs the feed, and it shows up in the daily log right away.
  3. Or with the timer. Without minutes, Save starts the timer. The Feeding card counts along, and in the window you end it or switch sides.
Nappies
Wet Dirty Both
  1. Wet, dirty or both. One tap and the nappy is in the day's history with its time. The button glows briefly to confirm.
  2. It keeps count. The top of the card shows how many nappies there were today, and below that how many were wet and how many dirty.
  3. Tapped the wrong one? A line in the day's history only disappears with a long press and a confirmation.
The first two years

Twenty-five months, month by month

From birth to the second birthday, every month says what is going on right now. Without comparing your child to others.

  • Your child's month first. From the birthday, the app works out which month of life your child is in and opens right there, body and mind in one card. At the top of every card, a round, glowing tree of life grows along with your child, a little further each month: from a slender trunk through branches that nestle into the circle to full bloom with leaves, blossoms and stardust on the second birthday. It sways gently, and butterflies fly around it, more the further it blooms. Below stand three pillars: Body, Mind and What helps.
  • Milestones and leaps for every month, as a window instead of a deadline. Children do not keep to calendars.
  • Growth by the WHO standards. Length, weight and head circumference against the official curves, value by value from the WHO tables.
  • Moments with photo and video. Four filters of our own from Celestial Glow to B&W Fine Art, sliders for brightness, contrast, saturation and vignette, cropping to 1:1, 4:5 or 9:16, stickers such as a crescent moon, lotus and baby feet, badges with the week or the age, free drawing with neon, gold glitter or a soft marker, text and blurring. Every step can be undone, the original stays untouched, and saving as a picture keeps full resolution. Faces can be made unrecognisable before a picture leaves the device.

The round tree of life from trunk to bloom

Growth, length 62 cm 4 months Birth 24 months
Mia Middle range
Peace of mind

This is about children's data

So nothing here is open that does not have to be, and nothing is asked for that is not needed.

Our promise in detail
No password

You sign in with a six-digit code sent to your email address or with your Google account. There is no password, and what does not exist cannot be stolen.

Passcode lock

Digits or a word when you open the app, with fingerprint or face if you like. The code stays as the fallback.

Works offline

Everything lives on the device first. Without an account the whole app works, just on this one device.

Shared is what you release

No picture leaves the device unless you make it. With family sharing, grandparents and friends only see the moments you release one by one, and only after you have confirmed them. Nobody ever sees cycle, pregnancy or measurements.

Ask first, then store

Cycle and pregnancy are health data. On first launch the app asks for your consent in a step of its own, before sign-in and before anything is stored. You can take it back at any time, with one tap.

No tracking

The app contains no Meta pixel, no advertising SDK and no third-party analytics. No ad network sees what you enter, because none is built in.

In seven languages, completely

Every language carries every text. Nothing falls back to another language, and the language you chose is there again the next time you open the app.

Deutsch English Español Français Nederlands Português Türkçe
Who is behind it

Why we built Lunabia

For self-determined, private women’s health.

The idea

A cycle app knows more about a person than almost any other app: when a period is due, whether there is a wish for a child, how the body is doing. This is exactly the kind of data that is especially valuable for advertising.

We wanted an app where that cannot happen. One that works fully without an account, has no ad network inside and is there for the cycle just as much as for pregnancy and the first two years with a child. Lunabia is our attempt to build exactly that app.

Lunabia is developed and operated by Fluxera LLC. Legal notice

Health knowledge must be medically sound, understandable and free from commercial influence.

The principle we measure every text in the app against.
Expert review

To be honest: No midwife, gynaecologist or paediatrician has reviewed the app’s texts yet. We wrote them ourselves; the growth curves come value by value from the official WHO tables.

That is why we are looking for professionals to review the weeks of pregnancy, the baby months and the developmental steps. Everything is ready as one folder, no code needed. Anyone who reviews will be named here, if they wish.

MidwivesGynaecologistsPaediatricians
Help review

What can be backed up

  • Growth per WHOValue by value from the official tables
  • No trackingNo pixel, no ad SDK, no third-party analytics
  • Ask first, then storeConsent comes before everything else
  • Not a medical deviceEstimates from your entries, no diagnoses

Coming soon

Lunabia is in development. Leave your address and we will let you know when it launches. One email, nothing more.

By signing up you agree to the Terms of use . We only store the address and only write to you at launch. The controller is Fluxera LLC in the USA. What happens with it.