About

One person builds this.

Baby Atlas is a baby tracker for a child's first years. Feeds, sleep and diapers go in with one tap, weight and height land on the official WHO growth curves, and the app reads your own baby's sleep to say when the next sleep window opens. It is made and supported by Kostiantyn Khozhai, a developer and a dad, not by a company with a support department.

Why it exists

Every tracker can tell you what already happened. The question a tired parent actually has is what happens next, and most apps answer it with an age table that knows nothing about the child in the room. Baby Atlas counts wake windows from the sleep you logged, so the estimate belongs to your baby. The rest of the app grew out of the same idea: record the day in one tap, then let the app do the counting.

How it is paid for

It is free while it is in early access. A subscription is planned for later. There are no ads, no in-app purchases today, and no third-party analytics SDK anywhere in the app. There is no advertising identifier and no App Tracking Transparency prompt, because there is nothing to track you with. Care records are never used for telemetry. What the app does record about an install, and why, is written out in the privacy policy.

How it is built

The app is React Native on iOS and Android, with an Apple Watch app, a home-screen widget and a lock-screen timer on iOS. Data lives in Postgres at Supabase, with row-level security so a record is reachable only by the family it belongs to. Growth percentiles use the official WHO LMS method rather than an approximation, and the arithmetic is written out in what a growth percentile actually means. Milestone content is traced to a primary publication, and the one line without a source says so instead of pretending.

Where to go next

• The questions people actually ask, including what happens to your data
• How it compares with other trackers, with their strengths first
• Support, or contact for anything else
• Delete your account, in the app or by email

Baby Atlas is a tracker, not a medical device. It does not diagnose anything and it does not replace your pediatrician. It can print the last 7, 14 or 30 days as a PDF, which is usually what the appointment is asking for.