Stop guessing when your baby is tired

Wake windows tracked. Guesswork gone.

SleepSpot counts the minutes since your baby last slept and tells you exactly when the next sleep window opens — before they get overtired.

Download Free on iOS

The overtired trap

Your baby was fine ten minutes ago. Now they're screaming, arching their back, rubbing their eyes raw. You missed the window.

Wake windows — the stretches of awake time between sleeps — are everything. Too short and your baby fights the nap. Too long and cortisol floods their system, making sleep harder, not easier. The American Academy of Pediatrics calls this the "overtired paradox."

The problem is that wake windows change constantly. A 3-month-old needs sleep after 75 minutes. A 6-month-old can handle 2.5 hours. And your baby might not match the chart at all.

A timer that actually knows your baby

SleepSpot starts counting the moment a sleep session ends. You see the current wake window front and center — on the app, on your home screen widget, at a glance.

As you log more sleep, SleepSpot learns your baby's actual tolerance. Not the average 6-month-old's wake window. Your baby's. It adjusts the alert timing based on real data from real naps.

When the window is closing, you get a notification. Not a generic "it's been 2 hours" alarm — a personalized alert that says "based on the last 5 days, your baby sleeps best when put down now."

Real-time wake timer

See exactly how long your baby has been awake since their last nap. Visible on the home screen and in the widget.

Age-adjusted baselines

Default wake windows calibrated for each age from newborn to 24 months — then refined by your baby's actual patterns.

Overtired alerts

Push notification before the ideal wake window closes. Catch the sleepy window, not the overtired meltdown.

Home screen widget

Glance at your iPhone home screen to see the current wake window without opening the app. Works with small, medium, and large widget sizes.

Real scenario

Tuesday, 10:47am

Your 5-month-old woke from a 40-minute nap at 9:15. SleepSpot shows "1h 32m awake" on your widget. At 1h 45m, your phone buzzes: "Nap window opening — your baby usually falls asleep best around now." You start the routine. She's asleep in 8 minutes. No crying. No rocking for 30 minutes. You sip coffee that's still warm.

Built for

Parents of babies 0–12 months navigating rapidly changing wake windows
Anyone going through the 4-month regression where timing suddenly matters more
Caregivers and grandparents who aren't sure of the baby's sleep schedule
Parents who keep missing the nap window by "just 10 minutes"

Try Wake Window Tracker Free

Free on iOS. No account required.

Common Questions

What are wake windows?

Wake windows are the periods of time your baby should be awake between sleep sessions. They vary by age — from 45–60 minutes for newborns to 4–5.5 hours for toddlers. Putting your baby down within their ideal wake window dramatically improves how quickly they fall asleep and how long they stay asleep.

How does SleepSpot know my baby's wake window?

SleepSpot starts with age-appropriate defaults based on pediatric sleep research. As you log sleep sessions, it learns your baby's actual patterns — when they fall asleep fastest, when naps are longest, and when they tend to fight sleep. After a few days of tracking, the alerts are calibrated to your baby specifically.

Can I see the wake window without opening the app?

Yes. SleepSpot has iOS home screen widgets that show the current wake window, time since last sleep, and the next nap prediction — all at a glance.

Is the wake window tracker free?

Yes. Wake window tracking, real-time timers, and widgets are all free in SleepSpot.

Start using Wake Window Tracker tonight

Free on iOS. Set up in under a minute.

Download SleepSpot Free