Wake Window Baby Sleep Tracker

See how long your baby has been awake, and when the next nap may come. Wake Window is a simple baby sleep tracker built around wake windows: the time your baby stays awake between sleeps. Tap once when your baby sleeps and once when your baby wakes. The app does the rest. WAKE WINDOWS BY AGE See the wake window range for your baby's age, from newborn to 12 months. The ranges come from named sources, Cleveland Clinic and the Sleep Foundation, and the app shows both so you can compare. Tap through to read the source pages yourself. NEXT NAP ESTIMATE (PRO) Get an estimated time for the next nap. It starts from the age range and blends in your baby's own logged naps. It is an estimate, not a rule. Your baby's cues come first. LOG EVERYTHING FOR FREE • Sleep timer for naps and night sleep • Feeding log: breast, bottle and solids • Diaper log: wet, dirty or both • Add or fix past entries • Sleep patterns over 2, 4 or 8 weeks Logging stays free with no limits. Your logs are never locked. SHARE WITH YOUR PARTNER (PRO) Both parents see the same timer and the same logs on their own phones. Join with a short code. One plan covers the family, so your partner does not pay again. WORKS OFFLINE The log lives on your phone and works with no signal. When you share, it syncs once you are back online, with no double entries. CORRECTED AGE Was your baby born early? You can base the wake window range on corrected age. MADE WITH CARE FOR YOUR DATA No ads. No account to set up. If you do not use sharing, your logs stay on your phone. You can delete your data in the app at any time. PLANS Free: all logging and patterns. Pro: next nap estimate and family sharing. See plans and prices in the app. Wake Window is a log and a rough guide. It is not a medical device and does not give medical advice. If you are worried about your baby's sleep, feeding or health, talk to your pediatrician.