Next nap and next feed predictions, with the working shown
“When's the next nap?” — answered on Home as a time window, from day one. It starts from what's typical for the age and tunes itself to your baby as you log.
Cocoon's Next up card shows the next nap and next feed as a time window. From day one it uses the typical range for your baby's age (“Typical for age · tuning to…”), then tunes to your baby's own pattern once there are enough logs — eight comparable gaps across three days for feeds, five days for sleep. It's plain maths from the last 14 days, never AI, and under 8 weeks corrected age it shows cues instead of a time.
What it does
The Next up card sits at the top of Home with two lines: the usual nap window and the usual feed window. It moves when a nap ends and re-anchors while a nap is running, and Home, Insights, the widget and reminders all give the same answer.
It works from the first day: until there's enough of your baby's own history, it shows the typical range for their age and says so. As you log, it tunes to your baby — and you can tell it whether the timing was too early, about right or too late; once your answers show a consistent lean, it moves the window by up to 30 minutes.
Today's rhythm goes further: the rest of today's naps and bedtime projected from the first logged wake, each nap's usual length, a check on whether today's sleep adds up for the age, and two schedules to choose from during the 4→3, 3→2 and 2→1 nap transitions.
How it works
- Log sleeps and feeds as usual — nothing to set up.
- Read Next up on Home: the usual nap and feed windows, labelled “Typical for age” or “Tuned to” your baby.
- Tell it how the timing went: too early, about right or too late.
- Open Today's rhythm for the rest of the day, through to bedtime.
The details
- Works from day one with an age-typical range, clearly labelled
- Tuned to your baby: 14-day lookback, recent days weighted more, outliers removed
- A range, never a single “due” time — babies vary day to day
- Under 8 weeks corrected age: time awake, typical ranges and cues, never a predicted time
- Optional reminder before the usual window
- Days of illness, travel or disruption can be left out
Common questions
How does Cocoon predict the next nap?
It looks at the last 14 days of comparable sleeps, weights recent days more, removes clear outliers and shows the middle 80% as a window — the weighted 10th to 90th percentile. Until there's enough history it shows the typical range for the age, labelled as such. See the full method.
Does AI choose my baby's nap time?
No. The forecast is deterministic maths that shows its working. Cocoon never asks AI to choose a time, a confidence level or a notification.
Why doesn't Cocoon predict times for a newborn?
Newborn sleep is too variable to time. Before 8 weeks corrected age Cocoon shows time awake, the typical range for the age and the cues to watch for — never a predicted time.
How is this different from other nap predictors?
It answers the same question — when is the next nap likely to go well? — but it's free, works from day one, shows a range rather than a single time, and publishes its method in full.
Read more in the guides
Wake windows: how long awake between sleeps
A wake window is simply the awake time between sleeps, and it grows slowly as your baby does.
Naps and nap transitions
Your baby's daytime sleep shifts naturally as they grow, and a few gentle signs help you read when a nap is on its way out.
Newborn sleep: what to expect (0–12 weeks)
In the early weeks your baby's sleep is meant to be short, scattered and feed-driven — here's what's normal and how to ride it out.
Building a flexible daily rhythm
A gentle, cue-led rhythm gives your day shape without locking you into a clock-watching schedule.
The 4-month sleep change
Around four months your baby's sleep grows up — more wakings now are usually a sign of healthy brain development, not a step backwards.
Free tools
Read exactly how the forecast is calculated →
Next nap & feed predictions
Every feature is free right now — no ads, no subscription. Log feeds, sleep and nappies in seconds — and keep the memories too.
Goes well with
Sleep tracker, plan & report
Nap and night timers that carry across midnight, the settling details that matter, and a clear picture of the last seven nights.
How it worksSleep program
Choose an approach that fits your family, and Cocoon walks you through it night by night — measuring progress from the logs you already keep.
How it worksVoice, widgets, Lock Screen & Siri
For when both hands are full: speak it, tap it from the Lock Screen, or ask Siri. Timers and the next window are always one glance away.
How it works