Free tool · data from paediatric sleep guidelines
Baby Wake Window Calculator
See how long your baby can comfortably stay awake between sleeps, based on age.
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Wake windows are practitioner heuristics, not clinical rules — every baby varies. Use as a loose guide.
Bebblo
Track every sleep & feed with Bebblo
After you start and stop the sleep timer or enter times manually, Bebblo estimates an age-based range for the next sleep from your logged entries. Free, offline, 14 languages.
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