Compared

Baby Atlas vs Napper

Last updated 13 August 2026

Written by the person who makes Baby Atlas, so weigh it accordingly. The two apps are answering different questions, which makes this an easier choice than it looks.

Napper is a sleep app. Baby Atlas is a log.

Napper puts sleep at the centre: naps, routines and the content around them are the whole product. If sleep is the thing keeping your household awake and you want an app that thinks about nothing else, that focus is the reason to pick it.

Baby Atlas treats sleep as one of three things you record all day, alongside feeds and diapers, and puts its effort into how fast that recording is and what the whole day looks like afterwards. Sleep estimates are part of it, not the point of it.

Where Baby Atlas is different

• Entry from outside the app. An Apple Watch app, an interactive home-screen widget that starts and stops a session from the widget itself, a Live Activity while it runs, and lock-screen widgets.
• A daily check-in for the parent. Energy, body, mood, sleep and support, with trends and guided breathing, private to whoever wrote it. A co-parent sharing the same child cannot read it.
• Growth and milestones in the same app. Weight and length on the official WHO curves by the LMS method, with the percentile in a plain sentence, plus milestones by age band and a PDF for the pediatrician.
• No third-party analytics, ad identifier or ATT prompt. Care data is never used for telemetry.

The short version

• Sleep is the problem and you want an app devoted to it: Napper.
• You log all day and want it to take one tap, from your wrist if needed: Baby Atlas.
• You want growth curves, milestones and a check-in for yourself in the same place: Baby Atlas.
• You are on Android today: Napper, because Baby Atlas is not there yet.

Details of other apps change often, so check Napper's own pages for what they currently offer rather than trusting a table on a competitor's site.

Baby Atlas is on the App Store for iPhone and Apple Watch. See also Baby Atlas vs Huckleberry, the full comparison page, or the FAQ.