Nursing, bottle and rhythm
Baby memory
Baby memory
Baby memory
Baby memory
Baby memory
Baby memory

Watch over your baby, together.

Feeds, bottles, sleep, growth — follow your baby's everyday life together, each with their own account, in one home.

Try for free Discover the app
  • Free tracking
  • No credit card
  • No ads
Features

The whole day, in one place.

Simple gestures, made for parents with full hands and little time.

In your pocket

Beautiful. Clear. Calming.

A frosted-glass interface, soft gradients and legible numbers — even at 3 a.m.

Together

One home, your own accounts.

Each parent their own account, the same home. What one logs, the others see — and everyone knows who did what. No more « did you feed her? » — you're always on the same page.

Synced automatically across all your devices.
Nannies and grandparents can join too.
Maman & Papa
Aujourd'hui
Tétée sein droit · en cours
Sommeil Sieste · 41 min Réveils fréquents
Couche Pipi
Couche Mixte · ● Verte
Tétée sein droit · 2 min
And so much more

Made for the whole first year.

Far beyond feeds — ark.baby keeps the big moments and follows your baby's development.

01 · Sleep

Sleep, anticipated.

  • Naps & nights timed Start the timer, spot the cycles.
  • Predictive wake windows New The app learns the rhythm and anticipates the next wake-up.
  • Quality & wake-ups Fragmented nights spotted at a glance.
02 · Day by day

Their days, followed.

  • Moods New Calm, fussy, happy — across the day.
  • Weather & heat Cues to dress your baby for the weather.
  • Night dressing (TOG) The right number of layers for the room.
03 · Health

Health, all in one place.

  • Health record Vaccines from the Swiss schedule (FOPH) and appointments.
  • Little ailments + cues Colic, fever, hiccups — cues suited to age.
  • Medication & temperature New Doses logged, fever curve tracked.
  • Export for the pediatrician New A clean summary to show at the visit.
04 · Development & play

Development, step by step.

  • Milestones (CDC/WHO) Holds head, follows with eyes, grasps.
  • Activity ideas New Games suited to their age.
  • Firsts First smile, first laugh, first tooth.
  • WHO growth curves Weight and height on the official percentiles.
05 · Feeds & solids

From feeds to solids.

  • A rhythm that learns Intervals tuned to your baby, not an age table.
  • Starting solids Vegetables first, allergens one by one.
  • Breast pump New Pumping sessions and volumes tracked per side.
06 · Family & memories

Family & memories.

  • Memory gallery One photo a month, from birth.
  • Keepsake card to share New Announce a milestone with a share-ready visual.
  • Family tree Linked to another household, if you like.
  • Star sign Sun, moon and rising sign, just for fun.
AI & analysis

Sovereign analysis, hosted in Switzerland.

Trends put into words, not diagnoses. Open-source models, run in Switzerland by Infomaniak — your baby's data stays in the country.

Mistral Insights · Infomaniak 🇨🇭
Kimi K2 Assistant · Infomaniak 🇨🇭
Conversational assistant Full plan

It knows your household's context, answers in English and stays non-diagnostic.

Hosted in Switzerland · Infomaniak — Data processed exclusively by Infomaniak, Geneva, under Swiss law.

Tracking & AI

Tracking, free. AI, optional.

All baby tracking is free forever, no credit card. AI is optional — 30-day free trial, then 4.90–9.90 CHF/month.

Tracking Free · forever
  • Feeds, bottles, sleep, diapers
  • WHO growth curves
  • Milestones & health record
  • Family tree
  • Multi-account household
CHF 0 No credit card
Optional AI
30-day free trial
Light CHF 4.90/month
  • AI insights (feed trends, rhythm, growth curves)
  • Mistral model — Infomaniak 🇨🇭
VAT included (8.1%)
Full CHF 9.90/month
  • Everything in Light
  • Conversational AI assistant
  • Kimi K2 model — Infomaniak 🇨🇭
Monthly quota — auto-paused when exceeded. VAT included (8.1%)

Full trial (Light + Full), no credit card needed. The subscription only starts after the trial period.

Start for free Free tracking · AI: 30-day trial, no card
🇨🇭Privacy first

Your data stays yours.

Encrypted connection, no ads and no resale. Your baby's information belongs to you alone — full stop.

Private to your household Only members of your household can see your data. Any request from outside is refused.
European hosting Primary production in the European Union, with a hot standby site and independent backups in Switzerland.
No ads, no resale No data sold, no advertising profile. Ever.
Web app

No store. Install it in one tap.

ark.baby is a web app (PWA): add it to your home screen and use it like a real app — no store required.

Add to home screen « Add to home screen » and it's installed, icon included.
Reminders and alerts Reminders and your co-parent's notes land straight on your screen.
Always up to date Updates arrive on their own, nothing to install.
Open the app
The company

An app by ark.swiss.

ark.baby is designed and built by ark.swiss Sàrl, a Swiss company founded in 2019 with two departments: web development and audiovisual integration. One standard: carefully built products designed to last.

2019
Since 2019 A Swiss company based in the canton of Vaud.
The ark ecosystem ark.baby joins a suite of apps built with the same care.
🇨🇭
Direct contact The same team designs, builds and maintains the app.
Discover ark.swiss
Questions

Parents' questions.

No. ark.baby helps structure the day and spot trends, but never replaces advice from a pediatrician or midwife.

Each member creates their own account, then joins the home with an invite code (valid 24h). Baby's data is shared, everyone keeps their own login, and you can see who logged what.

Our application infrastructure, business continuity and backups are hosted exclusively in Europe. Production is operated in the European Union, with a hot standby site and independent backups in Switzerland. AI analysis remains operated in Switzerland by Infomaniak.

All tracking is free forever: feeds, bottles, sleep, diapers, growth curves, milestones, health record, family tree, multi-account home — no credit card needed. The AI layer is optional (Light CHF 4.90/month or Full CHF 9.90/month), with a 30-day free trial, no commitment.

For the first two years, Swiss pediatrics keeps the WHO reference — exactly the one ark.baby uses. The new 2026 Swiss curves only diverge after age 2.

Add each child to your home and switch between them with one tap. Each keeps their own tracking, curves and memories.

Yes. ark.baby's AI uses only open-source models hosted by Infomaniak (Switzerland): Mistral (French) for insights (Light) and Kimi K2 (Chinese) for the conversational assistant (Full). These are open models run on Swiss servers — your baby's data never reaches their makers or any provider outside Switzerland.

Yes. All tracking — feeds, sleep, diapers, growth curves, milestones, health record, family tree — is free for life. AI is optional: try it free for 30 days, then choose whether to subscribe. No tracking feature is ever locked.

Ready to find your rhythm?

Create your home for free. AI is optional — 30-day trial, no commitment.

Start for free Review the features
  • Free tracking
  • No credit card
  • No ads