The baby milestone tracker
that celebrates every
first with you.
Lunara's baby milestone tracker monitors 50+ developmental milestones personalised to your child's exact age — alerting you when each window opens, capturing photo and video memories, and flagging patterns that may warrant a pediatric check. Trusted by 2.4 million families, it is the only milestone tracker that connects developmental data with sleep, feeding, and growth patterns to give parents a complete picture of their child's progress.
⭐ 50+ milestones · 🔒 Free to start · 2.4M families
The moments that matter most
Every first happens once.
Lunara makes sure you never miss one.
The first smile. The first word. The first wobbly step across the kitchen floor. These moments are not data points — they are the chapters of your child's story. Lunara's baby milestone tracker watches for every window, alerts you when it opens, and helps you capture the moment when it arrives.
Developmental windows are precise
First words typically emerge between 10–14 months. The window for babbling peaks at 6–9 months. Most parents do not know these windows exist until they have already closed. Lunara's baby milestone tracker opens each window for you — 2 weeks before the optimal moment — with personalised guidance on how to encourage development.
Every first, beautifully preserved
Log the moment a milestone happens. Add a photo or short video. Write a note in your own words. Lunara builds a private, chronological memory book of your child's developmental journey — a digital baby journal that grows alongside them.
Early signals, calmly surfaced
Not every delayed milestone is a concern. But knowing which ones to watch — and when — is the difference between calm and anxiety. Lunara flags patterns based on CDC and AAP guidelines and suggests a pediatric check only when the data genuinely warrants it.
⭐ Personalised milestone timeline
Your child's entire developmental
journey, in one timeline.
The Lunara baby milestone tracker builds a personalised developmental timeline from the moment you enter your child's date of birth. Every one of the 50+ milestones is dated, categorised, and presented in the sequence your baby will naturally reach them.
Each milestone entry includes the typical age range, what to watch for, how to encourage development during the window, and what it means if the window passes without the milestone appearing. When a new window opens, Lunara sends a gentle alert — not a clinical notification, but a warm, plain-language message written by our pediatric nursing team. This is what a baby development tracker should feel like: calm, specific, and always one step ahead.
- 50+ milestones across 6 developmental categories
- Personalised timeline from your child's date of birth
- Alerts 2 weeks before each developmental window opens
- Written guidance from Lunara's pediatric nursing team
- Mark each milestone the moment it happens
🧠 AI developmental intelligence
Our AI knows what to watch for.
Before your pediatrician visit.
Most parents learn about developmental milestones reactively — at a 6-month check-up, or when a concerned grandparent asks why the baby is not doing something yet. Lunara's AI changes this entirely.
Our AI baby milestone tracker cross-references your child's milestone data with their sleep patterns, feeding frequency, and growth measurements simultaneously. Because developmental progress does not happen in isolation — a growth spurt suppresses milestones temporarily, a sleep regression often coincides with a cognitive leap, and feeding changes frequently precede language development. According to the CDC's "Learn the Signs. Act Early." programme, early identification of developmental concerns leads to significantly better outcomes. Lunara's AI is calibrated to CDC guidelines and flags only the patterns that warrant attention — quietly, calmly, without alarm. Learn more about the full AI insights feature.
- Cross-references milestones with sleep and growth data
- Calibrated to CDC "Learn the Signs. Act Early." programme
- Distinguishes temporary plateau from genuine delay
- Suggests pediatric check only when data warrants it
- Weekly AI development digest — plain language, no jargon
Aria's babbling frequency increased 40% this week. This pattern typically precedes first word emergence. The window is now fully open.
Aria's sleep disruption this week aligns with a motor development leap — pulling to stand typically disrupts sleep as the brain practises the skill at night. This is expected and temporary.
At 11 months, Aria has achieved 12 of the 14 milestones typical for this age. No developmental concerns flagged. Next window opens at 12 months.
📸 Memory capture & baby journal
The digital baby book that builds
itself, one milestone at a time.
When Aria took her first steps, you had approximately three seconds before the moment was gone. Lunara's milestone photo capture is built for exactly that — open the app, tap the milestone, add a photo or video from your camera roll, write a note in your own voice, and the memory is saved forever.
Your baby milestone journal grows automatically as your child develops. Each entry is timestamped, tagged with the milestone category, and added to your child's private digital memory book — a beautiful, chronological record of their first year and beyond. Share individual milestones with family members via a private link — grandparents see the memory without needing to download the app. Every entry can be exported as a printable milestone book at any time.
- Photo and video attached to every milestone entry
- Private notes in your own words — timestamped forever
- Shareable milestone moments (no app download required)
- Export as a printable baby milestone book (PDF)
- Chronological baby journal — from first day to first year
Early signals, handled
with calm and clarity.
Not every delayed milestone is a cause for concern. Development is not a race — some children walk at 10 months, others at 16 months, and both are completely within range. The CDC's developmental guidelines acknowledge a wide spread of typical development across healthy children.
What matters is the pattern over time, not a single missed moment. Lunara's baby developmental milestone tracker monitors patterns across all 6 developmental categories simultaneously. When a pattern — not a single data point — suggests a pediatric conversation may be helpful, Lunara flags it clearly, explains the specific concern calmly, and provides a suggested question to ask your pediatrician at your next visit.
CDC-calibrated alerts
Every flag is based on the CDC's "Learn the Signs. Act Early." milestones. Not guesswork — guidelines.
Specific, actionable
We tell you exactly which milestone pattern triggered the flag and what to mention at your next check-up.
Always calm
We never use alarming language. Every alert is written by our pediatric nursing team.
Lunara is not a diagnostic tool and does not replace professional pediatric assessment. All developmental insights are for informational purposes and should be discussed with your child's healthcare provider.
✦ All 50+ milestones
Every developmental milestone
your child will reach.
Lunara tracks development across six categories — from first smiles to first sentences. Each milestone includes the typical age range, what to look for, and how to encourage it.
Gross motor milestones
Language development milestones
Social and emotional milestones
Cognitive development milestones
Sensory development milestones
Fine motor milestones
📅 Milestones by age
What to expect at every stage —
personalised to your child.
Tap your child's age to see which milestones are opening, which have passed, and what Lunara will track next.
Newborn milestone tracker
2-month baby milestones
4-month baby milestones
6-month baby milestones
9-month baby milestones
12-month baby milestones — first birthday
18-month toddler milestones
Toddler milestone tracker — 2 years and beyond
How Lunara compares
The milestone tracker alternative
with memory, heart, and AI.
The CDC Milestone Tracker is an excellent clinical reference. Wonder Weeks is a beloved insight into developmental leaps. But parents who want a CDC milestone tracker alternative that also captures memories, connects to sleep and growth data, and uses AI to personalise every insight consistently choose Lunara. Here is what separates them.
| Feature | Lunara | CDC Tracker | Wonder Weeks |
|---|---|---|---|
| Milestone tracking (50+) | ✓ | ✓ (checklist) | ✓ (10 leaps) |
| Personalised by child's age | ✓ AI | ✓ Manual | ✓ Manual |
| Photo + video memory capture | ✓ | ✗ | ✗ |
| AI developmental alerts | ✓ | ✗ | ✗ |
| Connects to sleep data | ✓ | ✗ | ✓ (leaps) |
| Connects to growth data | ✓ | ✗ | ✗ |
| Weekly AI digest | ✓ | ✗ | ✗ |
| Partner sharing | ✓ Live | ✗ | ✓ Limited |
| Developmental delay signals | ✓ Calibrated | ✓ Checklist | ✗ |
| Export PDF report | ✓ | ✗ | ✗ |
| Free tier | ✓ Generous | ✓ Free | ✗ Paid only |
| Pricing | $0–$9/mo | Free | $2.99/mo |
Real milestone moments
The parents who were there
for every single first.
"Lunara told me my daughter's first words window was opening. I started narrating everything I did. Three weeks later she said 'up' — and I was ready with my phone. I have the video forever. That alert changed how I parented that month."
"I had no idea there were so many milestones beyond walking and talking. The motor skills category alone showed me 15 things I had never thought to track. When Lunara flagged that my son's pincer grasp was delayed, I mentioned it to our pediatrician — she referred us to an occupational therapist. Caught early."
"The memory book export made me cry. Twelve months of firsts — every smile, every step, every word — printed and in her hands. That is not something any app had ever offered me before. Lunara is not just a tracker. It is a keeper of the moments that matter."
Questions answered
Everything about the
baby milestone tracker
✦ Every milestone, waiting to be celebrated
Their story is already
being written.
Every first happens exactly once. Join 2.4 million parents using the free baby milestone tracker app that makes sure you are ready for each one — and remembers it forever.
🔒 Free forever · Photo memories included · No card needed