Cubby — Baby Tracker Built for 3am

A look inside

Ten screens, one thumb

Every screen is built to be read in the dark and driven with the hand that is not holding a baby.

Cubby's Today screen: a 24-hour dial for a five-week-old named Mila with sleep as violet arcs, feeds as amber spokes and changes as green pips, reading last fed 1h 14m ago, above a nap-window bar and one-tap Feed, Sleep and Diaper buttons. — **Today**The whole day as a dial, with the next nap and next feed predicted underneath.

Cubby's Patterns screen: 2h 41m average between feeds, a 3h 29m longest night stretch, 46 sleeps logged, a measured wake window of 43 minutes to 1 hour 45 minutes, and a bar chart of feeds per day. — **Patterns**A seven-day read on feeds, sleep and the wake window measured from their own naps.

Cubby's Growth screen plotting weight at 10.05 pounds on the 64th centile and length at 54.5 centimetres on the 55th, each against shaded WHO centile bands from the 3rd to the 97th. — **Growth**Weight, length and head against the real WHO Child Growth Standards.

Cubby's Milestones screen listing CDC milestone checklists by age, with three of four two-month milestones ticked and the four- and six-month lists waiting below. — **Milestones**CDC checklists by age, ticked off as they happen.

Cubby's Shots screen listing the routine immunisation schedule from birth onward, with HepB first and second doses ticked off and later DTaP, polio, PCV and influenza doses still open. — **Immunisations**The routine shot schedule, dose by dose.

Cubby's feed sheet on the Nursing tab, with separate Left and Right timers — the left one running at twelve seconds and highlighted amber — a When field reading Just now, and a Save Feed button. — **Nursing timers**One timer per side, plus bottles, solids and pumping.

Cubby's History screen with filter chips for feeds, sleep, diaper and pump, today's dial, and a log listing a growth measurement, wet and dirty changes, a nursing session and two naps with their times. — **History**Every entry grouped by day, filterable, with a dial per day.

Cubby's Today screen with a nap in progress, reading asleep for 47 minutes since 11:11 AM, the dial's violet arc still growing, and the middle button switched to Wake. — **Sleep timer**One tap when they go down, one tap when they wake.

An iPhone Lock Screen showing Cubby's Live Activity: Mila asleep for 2 minutes, with a violet Wake button beside it. — **Lock Screen**The running nap sits on your Lock Screen with a Wake button.

Cubby's Settings screen showing Mila as the active baby with an option to add another, unit toggles for ounces, pounds and Fahrenheit, a Night/Day/Auto appearance switch set to Night, and reminder rows. — **Settings**Twins each get their own log. Your units, your reminders, your export.

What it does

The whole day, in one dial

Cubby draws your baby's day as a 24-hour clock. Sleep shows as arcs, feeds as spokes, changes as pips around the rim. One look tells you what kind of night that was — something a list of rows has never managed.

Knows when the nap is coming

Cubby measures your baby's own wake windows and predicts the next nap, with an honest window rather than false precision.

And when the feed is due

Predicted from the median gap between recent feeds, not a generic table.

Real WHO growth centiles

Weight, length and head plotted against the actual WHO Child Growth Standards, 3rd to 97th centile.

Milestones and shots

CDC milestone checklists by age and the routine immunisation schedule. Most trackers skip both.

Everything else

Bottles, nursing timers per side, solids, pumping, temperature and medicines. Twins each get their own log.

Reminders, on device

Optional nudges when a feed is likely due or the nap window opens. No push server involved.

How it compares

What you get in Cubby

	Cubby	Huckleberry	Baby Daybook	Glow Baby	Baby Connect
Dark mode	Yes	No	No	No	No
Nap prediction	Yes	Yes	Yes	No	No
Growth centiles	Yes	No	No	Yes	Yes
Milestones	Yes	No	No	No	No
Immunisations	Yes	No	No	No	No
Export your data	Yes	No	No	No	Yes

Comparison based on publicly published feature listings as of August 2026. Competitors change; check their listings for the current picture.

The fine print that matters

Your baby's day is nobody else's business

Cubby has no account and no sign-up. Every feed, nap and measurement is stored in a database on your iPhone and is never uploaded anywhere — there is no server of ours holding your baby's data, so there is nothing to sell and no advertising to sell it for. The only things Cubby sends are an anonymous crash report if it crashes and a count of how the unlock screen is used; the privacy policy spells both out.

Not medical advice. Cubby describes what you logged and estimates from your own data. Growth centiles come from the WHO Child Growth Standards and are context, not diagnosis. Always talk to your pediatrician about anything that worries you.

Get support

Feeds, naps and
diapers — at 3am,
one-handed.