Free baby sleep prediction apps compared (2026)

Pixy is ours and it is on this page, so read the rest knowing that. Every claim about another app below comes from that app’s own page, linked at the foot, with the date we read it beside it.

A prediction versus an age-based schedule

Two different things get called “sleep prediction”. An age-based schedule says that babies of a given age usually nap about so often, and hands everyone the same day. A prediction reads the sleeps you have logged for your own child and estimates when the next one is due. The first is a chart; the second needs a few days of your own entries before it has anything to work from.

Neither is better in every house. A chart costs nothing and needs no logging; our wake window table is one. A prediction is what people install an app for when the chart does not match the baby in front of them. So the useful question is which apps give you the second one without charging, and that is what the table records.

Seven apps, app by app

Two things worth saying plainly. Sofi and Pixy both give you a prediction without a paywall, so if that is all you need, either does it. And for Luli the honest answer is that we do not know which part is free: the listing tells you it predicts the next nap and stops there.

Which one, and for whom

• Sofi, if two of you will log and you want to pay for nothing. Its site lists predictions and caregiver sync as free.
• Pixy, if you want the prediction fitted to your own child with no trial, plus feeds, nappies, health, growth and routines on one screen, to age twelve. The trade-off is that a partner joining the same child is a paid family tier.
• Huckleberry, if you are ready to pay for SweetSpot and, on Premium, the sleep plans and chat. Its free membership still logs and syncs across devices.
• Napper, if an age-based schedule is enough for now. It is a free schedule, and personalisation is the paid step.
• Luli, if its listing appeals. Its App Store page lists 24 languages against Pixy’s fifteen, and its listing covers iPhone and iPad. Check inside the app what you get before paying.

How to test a prediction in a week

Log every sleep in the app for a few days, then compare what it says is due with what actually happened. The one that is closer to your baby, and that you stopped double-checking first, is the one to keep. The full comparison and the guide to trackers without a subscription cover the rest of each app.