NapBay

For parents of babies aged 3 to 18 months

Your nap flopped. Here's your new bedtime.

NapBay re-plans your baby's sleep day in under a minute. Wake windows, nap windows, bedtime and one clear verdict from the Rescue Rules.

Plan today for freeSee how the verdict works
  • Free to start
  • Any method: CIO, Ferber, gentle
  • Not medical advice. Just the maths.

Three inputs on a normal day. One verdict. Zero opinions on how you get your baby to sleep.

NapBay Today screen: Rescue rule 1, hold the plan, this morning's wake-up 06:45, three naps
The Today screen of the app, example day at 7 months. Not medical advice.

How it works

Three steps, under a minute

  1. Today screen: this morning's wake-up 06:45, naps today 3, nap 1 logged
    1

    Enter this morning's wake-up

    Age once, then today's wake-up time and how many naps you're aiming for. NapBay lays out the nap windows and the bedtime window for the day.

  2. Nap editor: fell asleep, woke up, and whether the baby slept, fought it or refused
    2

    Log the nap that actually happened

    Fell asleep, woke up, how it went. 13:00 to 13:35 is a short nap, so the next wake window is already 30 minutes shorter and bedtime moves earlier. Everything re-plans from the real end of the nap, not from the clock.

  3. Today screen in dark mode with the verdict card at the top
    3

    Read one verdict

    HOLD THE PLAN, BRIDGE NAP or EARLY BEDTIME, CAP + EARLY BEDTIME: one sentence on what to do next, with the rule it comes from. No dashboard to decode.

The 32-minute nap

The nap lasted 32 minutes. Not 90.

And the whole day just fell over. You stand in the hallway doing wake-window maths in your head. Guess a bedtime. Guess wrong. By Thursday the whole day has drifted 90 minutes.

Every schedule you've ever downloaded has the same bug: it's anchored to the clock. “Nap 2 at 13:00.” Lovely. Except nap 1 ended at 12:10, and now the plan is fiction.

Then the paediatrician asks how often she was up last night. “Three times? Maybe four.”

You don't need a sixth method. You already picked one. What's missing is the arithmetic and the record-keeping that no method book ships with.

In parents' own words

  • “I don't understand how to keep same times if nap times vary so much!”
  • “her naps are so hit or miss, how can I keep a consistent bed time?”
  • “whenever she's awake, I'm just watching the clock”
  • “very short crib naps… how do you meet wake windows??”
  • “I'm trying to keep accurate records for her sleep consultant, but I'm struggling with the logistics”
  • “ready for longer wake windows, but not enough to drop to 3 naps?”

The Rescue Rules

Five rules. One verdict a day.

This is the whole system on one page. Today's verdict names one of these rules, so you always know why.

  1. Rule 1
    HOLD THE PLAN

    Day sleep is inside the age target.

    Do nothing clever. Offer the next nap inside the window the app shows. A day inside range does not need rescuing, even if it felt awful.

  2. Rule 2
    BRIDGE NAP or EARLY BEDTIME

    Day sleep is more than 30 minutes short of target.

    Next planned sleep more than 90 minutes away? Bridge nap: 15 to 25 minutes, capped, in the pram or car with you awake and watching. Never longer, never in the cot. Less than 90? Skip the bridge and use the earliest bedtime in the window. And no extra long nap after 16:30; it buys you a 21:00 bedtime.

  3. Rule 3
    CAP + EARLY BEDTIME

    Two or more naps came in under 45 minutes.

    Use the earliest time in the bedtime window and start the routine 30 minutes before it. Tomorrow, cap nap 1 at the typical length: a monster nap 1 is the most common reason nap 2 fails. Don't stretch wake windows to tire them out; overtired babies nap worse, not better.

  4. Rule 4
    CAP DAY SLEEP TOMORROW

    Day sleep is more than 30 minutes over target.

    Cap the last nap of the day first, by 15 minutes at a time, then nap 1 to the typical length. Over-target day sleep usually shows up as a 04:50 wake or a 1-hour party at 02:00, not as a hard bedtime.

  5. Rule 5
    THE SIGNAL THE APP CANNOT SEE

    Three fought or refused naps in a row, or a nap that has become a 20-minute battle for two weeks.

    That is a transition, not a bad week. Stop adjusting minutes and open the matching flowchart: four question trees, tick what is true, get one answer.

  6. The three sentences to remember at 05:00

    • Anchor from the last real sleep, not from the clock.
    • Short nap, shorter next window, earlier bedtime. The app already did it.
    • Change one thing, hold it five days.

For you, or not for you

NapBay is for you if

  • Your baby is 3 to 18 months and you already run the day by wake windows.
  • You're mid nap-transition (4 to 3, 3 to 2, 2 to 1) and can't tell if it's the transition or a bad week.
  • One 32-minute nap turns the rest of your day into guesswork.
  • Daycare naps by the clock and your home plan collide every daycare day.
  • You're tracking night wakes for a paediatrician or a paid sleep consultant.
  • You have twins and you're already running two schedules in a chat window.

Not for you if

  • Your baby is under 3 months. Ask your clinician first. For babies born early, use corrected age.
  • You want an opinion on CIO vs. gentle. NapBay takes no side, on purpose.
  • You want a 40-feature tracker with community and push notifications.
  • You're looking for a promise that your baby will sleep through. Nobody honest can make it.
  • There's a medical concern: feeding, breathing, sudden changes. Read the safety page and call a professional today.
Safety: read first

What Rescue unlocks

Log it, print it, fix the bad days

  • Log: naps, bedtime and night wakes, 30 days back.

    Log: naps, bedtime and night wakes, 30 days back.

  • Summary: averages on one page. Print it or save it as a PDF for the appointment.

    Summary: averages on one page. Print it or save it as a PDF for the appointment.

  • Daycare day: fixed naps in, tonight's bedtime check out.

    Daycare day: fixed naps in, tonight's bedtime check out.

  • Transition flowcharts: four question trees, one answer.

    Transition flowcharts: four question trees, one answer.

  • Night screen: log a wake with one hand, always dark.

    Night screen: log a wake with one hand, always dark.

Pricing

$29 once. No subscription. Yours until the one-nap day.

Today stays free for as long as you need it. Rescue and Plus are one payment for the whole family.

Compared with a subscription

A typical sleep tracker: $8 to $13 per month, $96 to $156 over 12 months.

Rescue: $29 once. It does not stop working when your card expires.

Typical prices, rough comparison.

Free

Free

  • Today: wake-up in, nap windows and bedtime out
  • One verdict a day, from the five Rescue Rules
  • Safety page
Plan today for free

Rescue

$29once

  • Log naps, bedtime and night wakes
  • One-page summary for your doctor
  • Print summary and paper night log
  • Daycare-day mode with bedtime check
  • Interactive nap-transition flowcharts
  • Troubleshooters for early mornings, false starts, split nights
  • Invite your partner
Unlock Rescue for $29

Plus

$44once

  • More than one child, twins included
  • Corrected age for babies born early
  • Daycare access with its own role
  • A note for daycare staff
Get Plus for $44

14-day money-back guarantee

One tap in Settings, no questions asked. If NapBay doesn't take the arithmetic off your plate, you get your money back.

One purchase covers everyone in your family, including your partner.

FAQ

Questions parents ask before they start

None. Cry-it-out, Ferber, pick-up-put-down, gentle, feeding to sleep, contact naps: NapBay takes no side and works alongside all of them. It only does the arithmetic.

Stop doing wake-window maths at 5am.

Your nap flopped, here's your new bedtime. Enter the wake-up, log the real nap, read the verdict. Free to start, any method, 14 days money back.

Plan today for free
  • Free to start
  • Any method: CIO, Ferber, gentle
  • Not medical advice. Just the maths.