The baby sleep tracker
app that thinks
ahead of you.
Lunara is an AI-powered baby sleep tracker app that logs every nap and night session, detects sleep regressions early, and finds your baby's optimal bedtime window. Trusted by 2.4 million families, it is the only baby sleep tracking app that connects sleep data with feeding and growth patterns to explain the why behind every difficult night.
🔒 Free to start · No credit card · Loved by 2.4M families
You're running on empty.
And nobody warned you it would be this hard.
Sleep deprivation is one of the hardest parts of new parenthood. Not knowing whether a bad night is a regression, a growth spurt, or just one of those nights makes it harder. Lunara answers the question you're Googling at 3am — before you even open Google. Learn how Lunara tracks feeding patterns alongside sleep for the complete picture.
"She's been up every 90 minutes. Is this a sleep regression or is something wrong?"
→Lunara detects the 4-month, 8-month, and 18-month regressions by pattern — alerting you 3–5 days before they peak. You prepare. You don't panic.
"I don't know what bedtime is right for him. Every article says something different."
→Lunara analyses your baby's specific sleep history and finds the 15-minute window where they consistently sleep longest. No generic advice. Your baby's data, only.
"I'm logging in a notes app and a paper journal and still can't see any patterns."
→One tap logs any sleep event. Lunara builds the picture automatically — nap timing, sleep pressure, night waking frequency — and turns it into a plain-language weekly summary.
Every nap and night session,
logged in one second.
The best baby sleep tracker app is the one you actually use at 3am. Lunara is built for one-handed, sleep-deprived logging. Tap once when your baby falls asleep. Tap once when they wake. That's it — no forms, no dropdowns, no friction.
Your baby sleep log builds automatically — nap duration, night session length, wake window between naps, total daily sleep. Every entry plots on your baby's personal timeline so you can see a full week at a glance.
For parents using a newborn sleep tracker, Lunara automatically flags unusually short or long sleep sessions and suggests when to expect the next nap based on your baby's specific wake windows.
- One-tap start/stop sleep timer — works with screen locked
- Automatic nap and night sleep categorisation
- Wake window calculation between every sleep session
- 7-day sleep overview updated in real time
We detect sleep regressions
before they derail your week.
A sleep regression tracker app should do more than log bad nights after they happen. Lunara's AI analyses sleep duration trends, nap resistance patterns, and night waking frequency simultaneously — and flags when a regression is building, typically 3–5 days before it peaks.
According to the American Academy of Pediatrics (AAP), sleep regressions are a normal part of infant development, occurring as babies reach major cognitive and physical milestones. The most common regressions happen at 4 months, 8–10 months, 12 months, 18 months, and 2 years. To see how milestone tracking connects to sleep, explore how Lunara links developmental leaps to sleep disruption windows.
Lunara is calibrated to all five regression windows. When your baby's data suggests one is approaching, you receive a calm, clear alert — with guidance on how to handle it specifically for your baby's age.
- Detects all 5 major sleep regression windows automatically
- Alert arrives 3–5 days before regression peaks
- Guidance personalised to your baby's current age
- Distinguishes regression from illness or growth spurt
Tip: Earlier bedtime often helps during this window.
Based on 14 days of sleep data + developmental milestone data
Your baby's perfect bedtime.
Found by data, not guesswork.
Most parenting resources give bedtime advice in 30-minute blocks. Your baby deserves better. The Lunara baby sleep tracker analyses your specific baby's sleep data across weeks and pinpoints the 15-minute window where they consistently fall asleep fastest and stay asleep longest.
This is your baby's SleepWindow™ — a personalised recommendation that updates as your baby grows and their sleep needs change. When you hit the window, bedtime is calm. When you miss it, Lunara explains why the night went differently. Combined with your baby's growth data, the AI can even predict when a growth spurt will shift the bedtime window.
The World Health Organization recommends 14–17 hours of sleep per day for newborns and 12–16 hours for infants aged 4–12 months. Lunara's baby nap tracker automatically checks your baby's total daily sleep against WHO guidelines and flags deficits before they become problems.
- Personalised 15-minute bedtime window — updated weekly
- Wake window calculator between every nap
- Total daily sleep vs WHO guidelines — automatic check
- Bedtime shift alerts when your baby's window moves
Both of you, always on
the same page.
Sleep tracking only works when every caregiver logs. Lunara's live sync means whoever handles the 3am feed logs it once — and the other parent wakes up fully informed. No morning debrief. No "wait, when did she last wake up?"
Sleep looks different at every stage.
So do your insights.
Lunara's AI adapts everything — regression alerts, bedtime windows, nap schedules — based on your baby's exact age. Here's what parents at each stage experience. Explore the full AI insights feature to see how all the data connects.
Newborn sleep tracking
Newborns sleep 14–17 hours in fragmented cycles. Lunara tracks every micro-nap and night session, flags patterns that suggest hunger vs. comfort waking, and helps you find your first predictable routine.
Avg tracked: 8–12 sleep sessions per dayInfant sleep tracker — early months
Day/night confusion peaks at 6 weeks. Lunara's infant sleep tracker detects when your baby is starting to consolidate nights and guides you through the transition with daily adjusted insights.
Most parents see first 4h stretch by week 64-month sleep regression tracking
The 4-month regression is the most disruptive — and the most predictable. Lunara alerts you when the pattern shift begins, typically 3–5 days before peak disruption. You'll know it's coming before it hits.
90% of babies experience the 4-month regressionBaby nap tracker — nap transition
Most babies drop from 3 naps to 2 between 6–8 months. Lunara's baby nap tracker tells you when your baby is ready — based on nap resistance patterns and wake window data — so the transition is smooth, not forced.
Optimal 2-nap window: 6–8 months for most babiesToddler sleep tracking
Toddlers drop the second nap between 15–18 months. Night wakings often spike during developmental leaps. Lunara tracks both simultaneously and explains which developmental milestone is disrupting sleep tonight.
Average nap drop age: 15.5 monthsToddler and preschool sleep patterns
Sleep needs drop to 11–12 hours but sleep quality becomes the critical metric. Lunara tracks sleep quality indicators and connects them to daytime behaviour patterns. WHO guideline: 11–14h for ages 1–2, 10–13h for ages 3–5.
Early bedtime remains the most impactful lever
The Huckleberry alternative
with deeper intelligence.
Huckleberry is a great sleep tracker. But parents looking for a Huckleberry alternative that goes beyond sleep timing — connecting sleep to feeding, growth, and milestones — consistently choose Lunara. Here is what makes the difference. Compare all Lunara plans to see which tier is right for your family.
| Feature | Lunara | Huckleberry |
|---|---|---|
| Sleep logging | ✓ Free | ✓ Free |
| Sleep pattern detection | ✓ AI-powered | ✓ Basic |
| Regression prediction | ✓ 3–5 days early | ✓ SweetSpot™ |
| Personalised bedtime window | ✓ 15-min precision | ✓ General |
| Connects to feeding data | ✓ Yes | ✗ No |
| Connects to growth data | ✓ Yes | ✗ No |
| Milestone tracking | ✓ 50+ | ✓ Basic |
| Vaccine scheduler | ✓ Yes | ✗ No |
| Weekly AI wellness digest | ✓ Yes | ✗ No |
| Free tier generosity | ✓ More features | ✓ Limited |
| Pricing (Pro) | $9/month | $9.99/month |
Real parents. Real sleep breakthroughs.
"Lunara told me my daughter's terrible week was the 4-month regression — arriving exactly when the app predicted. I went from panicking at 2am to feeling completely prepared. That specific warning changed everything."
🌙 Sleep Tracking"I was moving bedtime around randomly for weeks. Lunara found that 7:10 PM was our magic window — my son now sleeps 22 minutes longer on average. That's not a small thing when you're a sleep-deprived parent."
⏰ Bedtime Finder"I brought the Lunara sleep report to our pediatrician. She said it was the most complete sleep history she had seen from a parent. She actually asked what app I was using so she could recommend it to others."
📊 Sleep Report
Everything about the
baby sleep tracker app
Lunara is consistently rated the best baby sleep tracker app, with a 4.9-star average from 142,000 verified reviews across the App Store and Google Play. It combines one-tap sleep logging with AI pattern detection, regression alerts, and personalised bedtime windows — making it more than a log, it is a genuine sleep intelligence system.
A baby sleep tracker app like Lunara lets parents log the start and end of every nap and night session with a single tap. The app records duration, timing, and sequence — then analyses the data using AI to detect patterns, predict upcoming regressions, and find the optimal bedtime window for your specific baby.
Yes. Lunara is the only baby sleep tracking app that detects all five major regression windows — 4 months, 8–10 months, 12 months, 18 months, and 2 years — by analysing sleep pattern shifts in your data. Alerts typically arrive 3–5 days before the regression peaks, giving you time to prepare rather than react.
Lunara offers the most generous free tier of any baby sleep tracker app. The free plan includes unlimited sleep logging, 7-day history, basic pattern overview, and partner sync. The Pro plan (free for 7 days) adds AI regression detection, personalised bedtime windows, and the weekly AI digest.
Open the Lunara app and tap the sleep button when your newborn falls asleep. Tap again when they wake. Lunara handles everything else — categorising naps vs night sleep, calculating wake windows, tracking total daily sleep against WHO guidelines, and alerting you when patterns suggest hunger vs. comfort waking.
Lunara and Huckleberry are the two most used baby sleep apps globally. Lunara is the preferred choice for parents who want AI insights that connect sleep with feeding and growth data. Huckleberry focuses primarily on sleep timing prediction. Lunara is free to start; Huckleberry's core AI features require a paid subscription.
Huckleberry is an excellent baby sleep tracker, particularly for its SweetSpot™ bedtime prediction feature. However, parents looking for a Huckleberry alternative that also tracks feeding, milestones, growth, and vaccines — with deeper AI insights and a more generous free tier — consistently find Lunara the stronger overall choice.
According to the World Health Organization (WHO), newborns aged 0–3 months need 14–17 hours of sleep per 24 hours. Infants aged 4–12 months need 12–16 hours. Lunara's newborn sleep tracker automatically measures your baby's daily total against these WHO guidelines and alerts you to consistent shortfalls.
A sleep regression is a temporary period of disrupted sleep that occurs when a baby reaches a major developmental milestone. The American Academy of Pediatrics (AAP) identifies regressions as normal and expected. Lunara tracks regressions by monitoring shifts in your baby's established sleep pattern — particularly increases in night waking frequency and resistance to naps — and alerts you when a regression appears to be building.
Yes. Lunara supports real-time partner sync on all plans. Both caregivers share the same live sleep dashboard — whoever logs the 3am wake-up, the other sees it immediately. The Family plan extends access to up to 6 caregivers, including grandparents and nannies.
One week of better sleep
starts tonight.
Join 2.4 million parents who stopped guessing and started understanding their baby's sleep. Free baby sleep tracker app — download in 30 seconds.
🔒 Free forever · 7-day Pro trial · No card needed