Welcome to your baby's first year

A calm, warm place to track feeds, sleep, milestones and memories — built for one-handed logging at 3am. Everything stays on your device.

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Log in seconds
One tap to record a feed, sleep, or diaper. No fiddly forms.
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See the patterns
Sleep trends, feeding intervals, growth curves — quietly observed, never alarming.
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Keep every moment
Milestones, photos, journal entries — your first year, gently held.

We found your Baby Prep OS data

Want to bring it over? Nothing will be deleted from Baby Prep OS — this is a copy.

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Tell us about your baby

Takes about 30 seconds. You can change everything later in Settings.

Used for growth percentile lookup until ~2 years.
Newborn OSa CalmNCalculated OS
Active caregiver
💾 Tap to save a backup — keeps your data safe if you switch browsers or devices.
CalmNCalculated
Beautifully organized dashboards for life's big moments
Newborn OS · a CalmNCalculated OS · v1.0 · your data stays on this device