Know when it's time to sleep and what to do when the night goes sideways, now and as your baby grows. Somsio builds your baby's day and adjusts it every morning based on how the night went. Luna, Somsio's coach, answers any time with that plan in front of her.
One week free. After that, a yearly subscription. iPhone only.
Every stage comes with its own questions. The app only shows you what matters for your baby's age today, and everything stays in one account, with one history from day one.
At this age there's no schedule to keep, and Somsio won't invent one. It tells you what's normal this week and what's coming next. You log feeds, diapers and sleep with one tap, and Luna helps you make sense of the evening fussing or a night that just won't end. Safe sleep info is always a tap away.
Between 6 and 12 weeks, your baby starts to tell day from night. Somsio shows you how to help: light and activity during the day, calm at night, and a short routine before sleep. From 4 months on, the daily schedule shows up, with suggested naps that shift with your baby's sleepy cues. No methods yet. It's too early.
At 6 months, Somsio looks back at the last two weeks and tells you whether your baby needs a plan or is doing just fine.
If your baby still wakes up several times a night at this age, or only falls asleep in your arms, Somsio suggests a plan that runs for several weeks. You pick how you want to be there for them (there are five approaches, with more or less crying), and every night you know exactly what to do. Log how it went in two taps and the next day adjusts.
By 3, the clock stops running the show. What matters now is the routine, the nap that's on its way out, the fears, and the kid who calls you back ten times after lights out. There's no daily schedule anymore, but Luna, the log and the history stay with you. No punishments, no pills.
That every baby wakes up between one sleep cycle and the next. The “good sleepers” are the ones who fall back asleep on their own.
That a newborn can't tell day from night until 6 to 8 weeks, and that's nobody's fault.
That “sleeping through the night” at 6 months means a stretch of five or six hours, not twelve.
That there are five ways to teach a baby to fall asleep, with different amounts of crying, and no single right one.
That a lot of the advice you get at 4 a.m. comes from someone who didn't sleep either.
Their age, how they fall asleep now, how many times they wake up, when their day starts. From there, Somsio builds the whole day: naps, bedtime and, once they're old enough, a method.
Open the app and there it is: the next nap and how long until it starts, with Luna right below and the log button at the bottom. Designed to use one-handed at 3 a.m.
Two taps in the morning: how the night went, how many wake-ups, how your baby fell asleep. Today's plan adjusts to that, not to some average baby.
Luna is Somsio's coach. She knows the method you picked, the phase you're in and what you logged yesterday, and she's there any time, in your language.
Somsio is built on what research has already shown. Here it is, explained the way we wish someone had explained it to us.
These are the ranges recommended by sleep medicine societies, naps included. They're wide on purpose: two healthy kids the same age can sleep different amounts and both be totally fine. Somsio starts from these numbers to build your baby's day, then fine-tunes them with what you log.
A newborn doesn't have a body clock yet. They can't tell day from night, which is why they sleep and eat around the clock. That clock develops between 6 and 12 weeks. What you do from day one helps it get on track sooner: normal light and noise during the day, calm and dim light at night, and a short bedtime routine.
Families who, from the first weeks, make day and night feel different, repeat a short routine and respond calmly to night wakings have babies who sleep more at night and, by 3 months, sleep in long stretches more often. It's the best way to reach 6 months with a baby who already knows how to fall asleep on their own, and it doesn't affect breastfeeding or weight.
Programs that teach babies to fall asleep on their own, tested in trials with hundreds of families, lead to fewer night wakings and moms who get more rest and feel better. When researchers checked in with those kids at age six, they slept just as well and had the same bond with their mom and the same well-being as everyone else. Sleep is a skill, and once it's learned, it sticks.
Every baby pushes back when something changes, and how they experience it depends on how you respond. That's why Somsio lets you choose from five approaches, from the most gradual to the fastest, and Luna tells you what to do with each one, night by night. Never before 6 months, and never with medication.
Somsio isn't a medical device and doesn't replace your pediatrician. If something's worrying you today, call the pediatrician first. The app can wait.
A “method” is how you respond when they cry at bedtime or when they wake up, done the same way every night until they learn to fall asleep without help. All five work. What changes is how much crying there is and how long it takes. Somsio suggests one based on your baby's age and temperament and what you feel up to, and Luna walks you through it night by night. The call is always yours.
Annual price on the United States App Store. You'll see the exact price when you download: it depends on your Apple account's country.
Somsio is a yearly subscription. The first seven days are free, and you're not charged anything during the trial.
If you don't pay, the app doesn't lock you out. You keep the full log, your plan, all your history and Luna, with a daily message limit. What turns off is the math: suggested times, nap alerts and adjustments. Safe sleep info stays free for every family.
Three PDF books, one for each stage.
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It's how you respond when they cry at bedtime or when they wake up, done the same way every night so they learn to fall asleep on their own. There are five, with different amounts of crying, and Somsio helps you pick yours. None before 6 months.
We won't promise you a date, because no honest method can. What we will do is adjust the plan every morning based on what you log. Luna goes over what's happening with you and, if something isn't about sleep, sends you to the pediatrician. And the first week is free.
Yes. Night feeds are never cut back before 6 months, and the plan accounts for them. If you bed-share, the app shows you the safest way to do it for your country, no judgment.
Somsio always goes by corrected age, counted from your due date, everywhere in the app, not just on day one.
From birth. The daily schedule runs until age 3; after that, Luna, the log and the history stay with you. Somsio always uses corrected age.
No. Somsio guides you and tells you when to see a doctor, but it doesn't diagnose or replace your pediatrician. Luna reminds you in the chat, and we're saying it here too.
From your Apple account settings, like any subscription. The app shows you how, and it doesn't make it hard.
No. Somsio is iPhone only, and we won't announce an Android version until it exists.
English, Spanish and French. The app, Luna and this page.
Somsio started at home, with two kids who didn't sleep. At 3 a.m., information wasn't the problem. There was too much of it, and it kept contradicting itself. What I needed was someone who knew my baby and could tell me what to do that night. That's what we built. If something in the app doesn't feel right, write to me.
One week free. If you don't pay, you still keep the log, your plan and Luna.