Their growth, in one easy-to-find place
Add a measurement when you have one. Find earlier weights, lengths, clothing and nappy sizes, and first milestones together in Growth. Tracking is optional.
Cocoon keeps weight, length or height and head circumference from birth, plus BMI and paired weight-and-length history. Under two, charts show recorded measurements without reference percentiles. From ages 2–20, weight, standing height and BMI can show CDC 2000 percentiles. Units can be metric or imperial.
What it does
Add a measurement to see your child’s history. Infant measurements, head circumference and weight-for-length are recorded without reference percentiles. Eligible measurements from ages 2–20 show CDC 2000 references.
Born early? Cocoon plots infant growth against corrected age. Your clinician can assess those measurements using an appropriate infant chart.
For eligible CDC measurements from age two, Cocoon can describe a recorded percentile change. It does not assess whether growth is healthy. Growth charts drop straight into the checkup report for your GP or child-health nurse.
How it works
- Open Growth from Home or Care, then choose the measurement you want to add.
- Enter weight, length or head — in metric or imperial.
- Open Charts & measurement history to see earlier dates. Tap a saved measurement to correct its value or date.
- Turn it into a checkup report for the doctor.
The details
- Optional measurements, plus clothing and nappy sizes and dated milestones
- Supported growth imports: preview the source data before saving
- Weight, length/height, head circumference, BMI, weight-for-length
- Recorded growth under two; CDC percentiles ages 2–20
- Corrected age for premature babies
- kg or lb + oz, cm or inches
- Centile-shift context for eligible CDC measurements
- Recorded growth charts and eligible CDC curves in the checkup PDF
Common questions
Do I have to track my baby's weight and height?
No. Growth tracking is optional. You can use feeds, sleep and your journal without adding measurements. Add a measurement whenever you have one to keep in your records.
Can I find and correct old measurements?
Yes. Open Growth → Charts & measurement history, choose the measurement type, then tap the saved entry. You can correct its date or value without creating a second entry.
Can I move growth history from another app?
Supported export files can include weight, length or height, and head circumference. Open the import guide, choose the source and check the preview. Import coverage depends on what the source app includes in its export.
Which growth charts does Cocoon use?
Under two, Cocoon shows recorded growth without reference percentiles. From ages 2–20, CDC 2000 references cover weight, standing height and BMI. Head circumference and weight-for-length remain recorded history.
Does Cocoon adjust for premature babies?
Yes. Record gestational age at birth and Cocoon uses corrected age for infant growth history, milestones, forecasts and the sleep program. Infant percentiles are not calculated.
Can I use pounds and inches?
Yes. Growth works in kg or lb and oz, and cm or inches — set once in Settings → Appearance & units.
Read more in the guides
Baby growth spurts: signs, ages and what the evidence says
What growth spurts are, the ages often quoted and how strong that evidence is, the signs, and how to tell a spurt from illness, a sleep change or low supply.
Is my baby getting enough breast milk? Signs by age
How to tell your breastfed baby is getting enough, using nappies, weight, swallowing and behaviour, plus what isn't a reliable sign and when to get help.
How much formula does my baby need? Amounts by age and weight
Typical formula amounts per feed and per day by age and weight, how intake builds in the first week, signs of enough or too much, and when to get help.
Baby milestones 0–3 months: what to expect and when to check
What most babies do by 2 months, how skills grow towards 3–4 months, simple ways to play, corrected age for premature babies and when to get advice.
Free tools
Weight, height & growth tracking
Every feature is free right now — no ads, no subscription. Log feeds, sleep and nappies in seconds — and keep the memories too.
Goes well with
Checkup report & PDF summaries
Bring selected records and the questions you want to discuss. Check the dates, note what is missing and let your care team interpret the information.
How it worksMilestones & development
Milestones as ranges, not deadlines: the CDC checklist, a gentle “This week” card on Home, and every first saved to the journal.
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When did the last dose go in? Cocoon knows — and warns you before an early one. Temperatures, symptoms, vaccines, teeth and visits, all in one place.
How it works