Compared
Baby Atlas vs Napper
Last updated 21 August 2026
Written by the person who makes Baby Atlas, so the bias is declared rather than hidden. Everything below about Napper comes from their own site or their App Store listing, checked in August 2026. Napper is a genuinely good app, and on one point I usually claim as an advantage they beat us outright. That is in here too.
The one-line answer
Napper is a sleep product with a tracker attached. Baby Atlas is a whole-day tracker with growth curves in it. If the nights are the problem and you want a schedule and sounds to play, take Napper. If you want one app that also answers the pediatrician's questions, take this one.
Where Napper is the better app
Sleep is the entire product, and it shows. A personalized nap schedule built from wake windows and the child's own sleep, push notifications before an upcoming nap, trends for sleep duration and night wakings, and a science-based article series on sleep biology and soothing. Baby Atlas estimates the next nap and bedtime, and then stops. There is no schedule to follow and nothing to read.
It has more than thirty sounds built in. White noise, pink noise, lullabies, heartbeat, nature. If a sound machine is part of your bedtime, Napper replaces it. Baby Atlas has breathing exercises for the parent and nothing at all to play for the baby, and that is not on the roadmap.
It speaks fifteen languages, including Ukrainian. This is the one I have to concede. Against most trackers, Ukrainian and Spanish are a reason to pick Baby Atlas. Napper's App Store listing lists English, Ukrainian, Spanish, Polish, French, German, Italian, Japanese, Russian, Portuguese, Swedish, Danish, Dutch, Finnish and Norwegian. We have three. On language, they win.
It is on more devices, and far more phones. iPhone, Apple Watch, Apple Vision Pro and Android, with over a million downloads. Baby Atlas is now on iPhone, Android and Apple Watch too, so the platform gap has closed, but the install base has not.
It has a track record. Editors' Choice on the App Store, 4.9 stars from about 4,300 ratings, over a million Android downloads, made by Napper AB. Baby Atlas has been public for weeks rather than years, and none of that is earned yet.
Where Baby Atlas is the better app
Napper does not track growth or milestones at all. No weight, no height, no growth curves, no percentiles, no milestone list. Neither their site's feature list nor their App Store description mentions any of it. Baby Atlas puts weight and height on the official WHO curves by the LMS method, writes the percentile out as a sentence, keeps milestones by age band, and exports a PDF or CSV for a visit. The whole percentile calculation is published in what a growth percentile actually means. If you want one app to bring to the checkup, Napper cannot be it and this one can. That report also carries temperature and medicine, the pair a doctor asks about first on a sick visit, and the vaccinations recorded inside its range.
Nap estimates cost nothing here. Napper does not publish its prices on its own website, which is itself worth knowing before you install. The App Store listing in August 2026 shows Napper Sleep at $14.99 a month and $89.99 a year, a Complete tier at $129.99 a year, and several other bundles between $9.99 and $119.99. Reviewers consistently describe the personalized nap schedule as the paid feature, behind a seven-day trial. In Baby Atlas the next-nap and bedtime estimates are in the free app, as is the Apple Watch app, the interactive widget and the Live Activity.
Their privacy label is heavier than ours, and you can check it in the store. Napper's declares Identifiers under "Data Used to Track You", lists Device ID under "Developer's Advertising or Marketing", and includes Coarse Location among the analytics data linked to your identity. Baby Atlas declares nothing under tracking: no third-party analytics SDK, no advertising identifier, no App Tracking Transparency prompt, and it never asks for or reads location. What we record about usage is the app version, language and timezone on an account.
The history goes wider than sleep. Both apps draw the day as a circle, and Napper's 24-hour clock got there first. The difference is behind it: Baby Atlas has a day, week and month history with a summary card underneath, carrying the night span and total, naps, awake time and the mean awake window, night wakings with time awake, feed count with the average interval, and bottle volume split day against night. Napper's trends are good and they are trends about sleep.
The parent page is the one place we actually compete. Napper has a You-tab with mood tracking and journaling, and as far as I can tell they got there before anyone else, which I will happily credit. Ours is shaped differently: a check-in across five named dimensions, energy, body, mood, sleep and sense of support, with trends over time, three guided breathing patterns with haptics, and a hard privacy rule enforced in the database, so a co-parent who shares the same child cannot read a word of it. If this matters to you, compare the two directly rather than taking either of our word for it.
The watch works on older watches. Napper's Apple Watch app requires watchOS 26 or later, per its App Store listing. The Baby Atlas watch app targets watchOS 10, so it runs on hardware several years older.
What Napper charges for
Prices as listed on the US App Store in August 2026. They are not published on napper.app, they vary by region, and they change with promotions, so treat this as a snapshot.
| Item | Price |
|---|---|
| Napper Sleep, monthly | $14.99 |
| Napper Sleep, yearly | $89.99 |
| Napper Complete, yearly | $129.99 |
| Other listed bundles | Between $9.99 and $119.99 |
| Free trial | Seven days, advertised as "try 7 days for $0" |
| Baby Atlas | Free during early access, no ads, no in-app purchases. A subscription is planned and will be announced in the app before it takes effect. |
Feature by feature
| Baby Atlas | Napper | |
|---|---|---|
| Sleep, naps, night wakings | Yes | Yes, the centre of the app |
| Feeds, with breast side | Yes, side and the order used | Yes, nursing timer with breast selection |
| Diapers | Yes | Yes |
| Medicine | Name, dose and time. No dose arithmetic at all | Yes |
| Temperature | Yes, with where it was taken, in °C or °F | Not in its published tracking list |
| Weight, height, growth curves | Yes, WHO curves by the LMS method, maths published | Not tracked |
| Developmental milestones | Yes, by age band, plus a sourced age timeline | Not tracked |
| Nap and bedtime estimates | Free. Inactive under 8 weeks | Yes, the paid feature. Adjusts to the child's own sleep |
| A schedule to follow | No, estimates only, never advisory | Yes, a personalized nap schedule |
| Sleep sounds and white noise | None | 30+ sounds, lullabies, nature, heartbeat |
| Reading material on sleep | None | A science-based article series, and Infant Sleep School |
| Day, week and month history with summaries | Yes, with night span, awake windows, feed intervals, bottle day/night split | Trends and statistics, sleep-focused |
| Something for the parent | Check-in across five dimensions, trends, guided breathing, private to its author | Yes, a You-tab with mood tracking and journaling |
| Apple Watch | Free, watchOS 10 and later | Yes, watchOS 26 and later |
| Lock-screen and home-screen widgets | Yes, free. Interactive widget starts and stops a session | Yes, a lock-screen widget with asleep and awake time, plus nap notifications |
| Two parents on one child | Yes, real-time, free | Yes, multi-caregiver sharing |
| Export | PDF report and CSV, free, temperature and medicine included | Not advertised |
| Data used to track you (Apple's privacy label) |
Nothing. No analytics SDK, no ad identifier, no ATT prompt, no location | Identifiers, plus Device ID for advertising or marketing and coarse location in analytics |
| Platforms | iPhone, Android, Apple Watch | iPhone, Apple Watch, Vision Pro, Android |
| Languages | Three: English, Ukrainian, Spanish | Fifteen, including Ukrainian and Spanish |
| Price | Free during early access. Subscription planned | Free tier, then $14.99 a month or $89.99 a year |
Where they genuinely tie
Both predict naps from the child's own recent sleep rather than a fixed age table, and both adjust as that sleep changes. Both time a breastfeed and record which side. Both log bottles and diapers. Both put two caregivers on one child at no cost. Both have an Apple Watch app. Both count night wakings. Both draw the day as a circle. Both have a place for the parent rather than only the child, which almost nothing else in this category does. Both are, in fairness, carefully made apps by small teams that clearly use them.
The decision is not about tracking quality. It is about whether you need a schedule and sounds, or growth curves and a parent page.
The short version
- The nights are the problem and you want a schedule plus sounds to play: Napper.
- You want growth curves, percentiles and milestones for the checkup: Baby Atlas. Napper does not track them at all.
- You want nap estimates without a subscription: Baby Atlas.
- You need medicine logged: either one. Napper records it, and so does Baby Atlas now, without calculating anything from it.
- You want a temperature in the same log: Baby Atlas. It is not in Napper's tracking list.
- You want the app in Ukrainian or Spanish: either one. Napper has both, and thirteen more.
- You want a place to log how you are: both have one, so try both and keep the one whose shape you like.
- You want both a schedule and growth curves: run both, they do not conflict.
Both apps ship often, so treat every figure here as dated August 2026 rather than permanent, and check their pages before paying for anything. If something on this page is wrong or has gone stale, write to hello@baby-atlas.com and I will correct it, including if the correction makes them look better.
Baby Atlas is on the App Store and Google Play. See also Baby Atlas vs Huckleberry, the alternatives page, or the FAQ.