The baby tracker that's fastest at 3am

Log feeds, sleep, and diapers in a tap or two. Sway keeps the rhythm so you don't have to — calm, no-pressure, never a report card.

Get the native app for iPhone & iPad.Download on theApp Store

Nora

12 weeks old

Synced
Feeding
6 today
1h 20m ago
Nursed · left · 15m
Sleep
2 naps · 2h 05m today
awake · 40m
up since 12:50

Sway's guess: next nap 1:30 – 2:00 — from Nora's wake stretches this week. Just a guess.

Diapers
5 today
35m ago
last change · wet
Bottle logged — tap to undo
🍼 Bottle
Amount
120 ml+
When
−30m−15mNow

Two taps at 3am

Log a feed before you're fully awake

The things you reach for at night — feed, sleep, diaper, and which side — are one tap from the home screen, then a confirm. No menus, no forms, no hunting.

  • The four core logs, one tap each
  • Backdate in seconds — "she fell asleep 40 min ago"
  • Every log is undoable from the toast
  • Big targets, one-handed, bottom of the screen

Never lose a timer

Timers that survive a handoff

Start a nursing or sleep timer and it lives on the server, not your phone. Hand the baby to your partner and the timer is still ticking on their screen. The last-feed chip always remembers which side.

  • Breast timer with a left / right toggle
  • Last side remembered — the other side pre-selected
  • A crashed phone or a handoff can't lose it
  • A gentle nudge if a timer runs impossibly long
🤱 Nursingrunning
Right side is up next timeDone
Rhythm — last 14 days
SleepFeedDiaper

The pediatrician screenshot

See the whole day at a glance

History is a clean timeline by day, plus a rhythm grid: two weeks of sleep, feeds, and diapers as colored bands. It's the view parents screenshot for the doctor — export it as an image or PDF.

  • Reverse-chron timeline with per-day totals
  • 24-hour × 14-day rhythm grid
  • Who logged what — "Logged by Sam"
  • Export for the pediatrician in one tap

Guidance, not just logging

Your baby's own rhythm, learned

Sway reads the patterns in your own log — typical time between feeds, how wake windows are stretching, the longest night stretch — and guesses the next nap window. Always a guess from your baby's week, never a norm to measure up to.

  • Next nap-window guess from recent wake stretches
  • Feed-interval and sleep trends over time
  • Longest-stretch and cluster-feed detection
  • Descriptive and warm — never a percentile grade
This week
6h 10m
longest night stretch
2h 45m
typical between feeds
Nightly sleep
Weight
Nora's curve
Recent firsts
First smilewk 6
Rolled overwk 11
First gigglewk 12

The long view

Growth curves and every first

Plot weight, length, and head on the WHO curves — your baby's own line, corrected for prematurity when you set a due date. Capture the firsts — smile, roll, tooth, step — with a photo, never framed as a race.

  • WHO 0–24 month percentile curves
  • Corrected age for preemies, automatically
  • Firsts library + custom milestones with photos
  • Printable pediatrician visit summary

The 3am companion

Ask about your baby, from your baby's data

Sway's AI companion knows your log — today's feeds, last night's sleep, the growth curve — and answers in plain language. It explains patterns; it never diagnoses.

  • Answers from your own baby's data
  • Log by chat or voice, hands-free
  • A warm weekly rhythm digest
  • Always names its limits and points to your pediatrician
How long did she sleep last night?
⚕️ Sway explains patterns, not diagnoses. For anything worrying, call your pediatrician.
Ask about Nora, or log by voice…
🎙️ VoiceListening — just talk.
Bottle, 120, an hour ago
Got it — 120 ml bottle, logged for 1 hour ago 👍
PauseEnd

Hands-free

Just say it — Sway logs it

Hands full with a baby? Tap the mic and talk. "Bottle, 120 milliliters, an hour ago." Sway parses it, shows you what it heard, and logs it — no typing at 3am.

Both parents, one log

Invite a partner — they see it instantly

Share the baby with your partner, a grandparent, or a nanny. Everyone logs into the same record, and it syncs the moment anyone taps. No more "did you feed her?" texts — you can just look.

NoraInvite
CaregiversYSA
Bottle · 120 mlAlex · 7:40 pm
Diaper · wetYou · 6:15 pm
Sleep · 45mSam · 4:30 pm
Just now
Alex put Nora down at 7:40
3:14 AM
🌙 Nora · asleep 40m

Kind at 4am

A night mode that ends the interaction

Between your set hours, Sway goes near-black and warm-dim, with the biggest targets and haptic confirmation. Log, confirm, screen dims — nothing to scroll. The point is to protect your sleep, not keep you on the phone.

  • Auto near-black theme between your hours
  • Huge targets, one-handed, haptic confirm
  • Log → confirm → dim — nothing to scroll
  • Built to give you back the 3am half-hour

Small touches, big difference

The little things that make tracking at 3am survivable.

Last-side memory
🤱

The most-praised small feature in the category — you never have to remember which side.

Ends well, not with nagging
🎉

Looks like diaper season is winding down 🎉

When a log goes quiet for weeks, Sway offers to tuck it away instead of reminding you. Growth and milestones stay as the keepsake.

Choose your theme
Generate a theme
Feed · left · 15m1h ago
Sleep · 45m3h ago

Your vibe

Themes for day and for 3am

From the soft-green calm of the default to a near-black night, pick the look that's easiest on tired eyes — or describe a vibe and let Sway design a custom palette for you. Every theme is tuned for readability and quiet.

Kind at 4am,
fast at 3am

Take Sway anywhere

Get the native app for iPhone & iPad.

Download on theApp Store