Sleep Gem: Baby Sleep Tracker

Sleep Gem is the baby sleep tracker that learns your baby's own wake windows and tells you when to put them down. No generic age chart: every nap you log tunes your baby's schedule, so naps get longer and nights get calmer.

Built by a father of three in Singapore and refined over five years and hundreds of thousands of logged days.

HOW IT WORKS
1. Log with two taps: Wake Up, Put Down, Sleep, Pick Up.
2. Sleep Gem works out your baby's wake windows from what you log and shows the next put-down time.
3. AutoOptimise keeps adjusting the nap schedule and bedtime as your baby grows, through nap transitions, sleep regressions and sick days.

WHAT YOU GET
• The next put-down time, always on screen, with a "Why this time?" explanation
• A nap and bedtime schedule that is your baby's, not an average
• Night sleep, night wakings and total sleep charts over 15 to 90 days
• A plain-language morning briefing on how last night went
• Mark an unwell day and the schedule adapts instead of breaking
• Beginner or Advanced logging: start simple, add awake-in-crib time when you are ready
• One shared log for both parents, your helper or grandparents, updated live
• Edit, insert and undo entries, with a roller time picker for exact times
• Dark mode for 3 a.m.
• Care log (feeds, diapers) and WHO growth charts
• English, 中文 and Bahasa Indonesia

WHO IT IS FOR
Newborns, infants and toddlers up to about three years. Especially useful if you are:
• A first-time parent guessing when the next nap should be
• Working through the 4-month sleep regression or a 2-to-1 nap transition
• Sharing care with a partner, helper, nanny, daycare or grandparents
• Planning to sleep train and want a solid routine first

FREE
Sleep Gem is free. No subscription, no paywall, every feature included. Start as a guest, no account needed.

WHAT PARENTS SAY
"Lifesaver for parents who manually calculate and record wake times. No need to calculate wake times anymore." (App Store review, Singapore)
"It helps to relieve our mental load for calculating when's the next nap." (App Store review, Singapore)

Questions or ideas? hello@sleepgem.app
More at sleepgem.app