See bedtime coming
The sleep and feeding forecast is built from your own baby's entries over the last two weeks. The day plan lays it out by the hour: when it is time to put the baby down and when the next feed is due.
34
interface languages
74
countries in the vaccination calendar
4
stores plus a direct APK
0
third-party analytics and ad SDKs
Trackers get abandoned because they overload you
Parents of a newborn keep a feeding and sleep diary in the very months when they have the least strength. Existing trackers greet them with dozens of fields and a list of everything left blank, and two weeks later the app gets deleted — not because it is bad, but because it demands attention nobody has.
We built the app the other way round. At night the screen shows two big buttons: fed and asleep. Every section is open from the start, and parents set up the home screen themselves: move blocks, resize them or pick a ready-made layout, from Minimal with just feeds and sleep to Everything in view.
The five screens this was all built for
Not a feature list — real scenes from the first year of parenting.
Your country's vaccinations, not vaccinations "in general"
A calendar for 74 countries based on WHO data; for Russia, following the Ministry of Health order. No "overdue" labels: a medical exemption or your own schedule is normal, and the app suggests rather than pushes.
Fussy days that make sense
The app knows the weeks of developmental leaps and shows what is happening with the baby right now and when it will pass. Less anxiety on the hardest days.
Height and weight on WHO curves
Every measurement lands on the WHO percentile curves. You can see the child growing at their own pace — not "below normal" from some random table online. Developmental milestones follow the revised CDC 2022 list.
A report for the pediatrician in one tap
Daily averages, weight gain and the WHO chart — printed or as a PDF before the appointment. The doctor sees the picture instead of leafing through a diary. CSV export for any period.
What it can do
Briefly, section by section. Everything listed is already out in the stores.
Feeding
- Breastfeeding on one screen: a timer per side, or minutes set by turning a dial
- Bottle: the amount in one swipe along the scale
- Pumping and the milk stash in the fridge and freezer
- First foods: the first taste of each food, watching for a reaction for three days, portions in spoons
Sleep
- Forecast: the tiles show when to expect the next sleep and feed, learning from your entries
- Day plan: sleep and feeds by the hour, with today's forecast until evening
- Wake window and the sleep total for the day
- An early bedtime counts as night sleep, so the daily total no longer jumps
Health and development
- Vaccinations on the schedule of 74 countries; for Russia, following the Ministry of Health order
- Weight, length and head circumference on WHO percentile curves
- Milestones from the revised CDC 2022 list, plus developmental leaps
- For premature babies, milestones, sleep norms and percentiles count from the due date
- Temperature, medicines with the interval between doses, symptoms
For the doctor
- A pediatrician summary: what changed this week, daily averages, the WHO chart
- Print or save as PDF before the appointment
- CSV export for any period
- Diary calendar: every entry, day by day
Family
- Two parents, each with their own sign-in, and you can see who logged what
- Twins and triplets: up to three children and "log for both"
- Cheat sheets: pictures, links and notes about the baby for the whole family
- A card of the day to send to grandma
Convenience
- Your own home screen: blocks move and change size
- A menu with every section on one screen
- Logging after the fact: a past sleep, the time of a bottle or a bath
- Night mode for night feeds
- Email sign-in in case the phone gets lost
When your hands are full of baby
A feed, a sleep or a diaper can be logged without reaching for the phone.
- Watch: separate apps for Apple Watch and Wear OS
- Voice: tell Nana "fed 120" and the entry appears
- Smart speaker: the My Baby Apex skill for Yandex Alice, in Russian
- Lock screen: widgets and a sleep Live Activity
What it costs
The diary is free and has no ads. Two things are paid: the Nana assistant and, on iPhone, the shared diary for two.
Nana+
$4.99 a month or $39.99 a year
Ask Nana about your baby by voice or text: formula, weight gain, daily rhythm, clothing sizes. She knows your entries and writes to the diary when you ask. The shared diary for two is included. The first week is free; after that the subscription renews automatically and can be cancelled at any time.
Family+
One-time purchase on the App Store: $19.99
The shared diary for two, without the assistant. $4.99 in Belarus and Ukraine, free in Russia. Free on Android and in the browser.
A child's data is not a commodity
Our own server, no third-party analytics or ad SDKs. Entries go to a language model only when you ask Nana yourself and have agreed to it. The account is deleted right in the settings.
My Baby is an observation diary, not a medical app. Vaccination timing, exemptions and any health questions are decided by a doctor.
The app in the stores
One build for every storefront. Outside the stores the APK is served from mybaby.apexs.tech/apk.
How it is built
First commit on 2 August, first store on 15 August, and eight releases between 18 September and 7 October. A few decisions from the inside.
10
weeks since the first commit
4,000+
commits
540+
merged pull requests
8
releases in 20 days
Works offline
The diary lives on the device, and an account is optional. Entries survive a frozen or dead phone, and a copy comes back if the system clears the app's storage. Moving the diary to the cloud is a single step.
Nana listens on the phone
Simple phrases like "fed 120" are understood by the phone itself, with no internet. A harder question goes to a language model only if you have agreed to it.
A forecast for your baby
When to expect the next sleep and feed is worked out from your own child's entries over the last two weeks, not from averages in a table.
A script builds the store pages
Texts and release notes for four stores come from one dictionary in 36 locales. Screenshots are taken from the live app on a demo diary, a script adds the frame and the headline, and uploads go through the stores' APIs.
The subscription lives in the account
Nana+ bought on the website also works in the iPhone app after signing in to the same account. The website accepts Russian bank cards too.
Every release explains itself
No release goes to the stores without What's New in 34 languages. In the app it shows what is new on real interface elements, in the user's theme and language, not on a picture.
Stack
Client
React 19, Vite 8, Tailwind 4, PWA
Mobile
Capacitor 8 — iOS and Android from one codebase
Watches
watchOS (Swift) and Wear OS (Kotlin) — native clients
Server
Hono, PostgreSQL, Drizzle ORM
Offline
PGlite in the browser, sync once the connection is back
Release
Docker, Traefik, store publishing through their APIs
Development history
Sixteen dates from August to October 2026: how the app grew new platforms, reached the stores and got updated every few days.
2 August
First commit
The project skeleton, the database schema and migrations with tests — in one day.
4 August
Localisation and our own analytics
The screens are translated, metrics are counted by our own table — no third-party SDKs. The APK starts being served straight from the server.
5 August
Widgets on both platforms
Lock screen and a sleep Live Activity on iOS, the home screen on Android.
6 August
Automated builds and store listings
iOS signing, profiles, build tasks; texts and screenshots go to App Store Connect by script instead of by hand.
7 August
Store listings in 33 languages
Titles, descriptions and keywords are generated from a single dictionary. Nobody writes them by hand.
10 August
Apple Watch
Feeding, sleep and diapers from your wrist, plus a complication on the watch face.
11 August
Wear OS
Action tiles and a separate watch track in Google Play.
12 August
Voice commands
Alice and Alexa on a shared handler: log a feed while your hands are busy with the baby.
15 August
First release: RuStore
The app is available to real users for the first time.
23 August
Apple's review notes
Working through the reviewers' list, two rebuilds and fixes in a single day.
27 August
Release on the App Store
Version 1.0 together with the Family+ purchase.
28 August
All four stores
App Store, Google Play, RuStore and AppGallery. One build for every Android storefront.
18 September
Nana and widgets
The assistant logs what you say and answers from the diary. Widgets: wake window, breastfeeding and the day's total.
23 September
Backup copy
A diary without an account comes back even if the phone cleared its storage.
6 October
Forecast and your own home screen
Tiles show when to expect sleep and feeds. A day plan by the hour; home screen blocks move and change size.
7 October
For premature babies
Milestones, sleep norms and growth percentiles count from the due date.