LittleGrowth
See your child's growth on the curves pediatricians use.
Launching soon on the App Store. · Last updated:
$2.99 · One-time purchase
About the app
LittleGrowth tracks your child's height, weight, and head circumference against internationally recognized child growth standards, from birth to age five. Instant percentiles, beautiful curve charts, multiple children — and complete privacy, because nothing ever leaves your device.
Every pediatric visit ends with numbers: a height, a weight, a percentile scribbled somewhere. LittleGrowth keeps those numbers in one calm, precise place — and shows you what they look like on the same internationally recognized growth curves that pediatricians use worldwide.
Add a measurement and you immediately see the percentile (“P62 height, P48 weight”) and your child's point plotted on the growth curve bands (P3 / P15 / P50 / P85 / P97), for height, weight, head circumference, and BMI-for-age, from birth to five years. The percentile math uses the standard LMS method and is unit-tested against the published reference values.
And because this is your child's data, LittleGrowth is built local-first: no account, no login, no cloud, no analytics, no ads, no third-party code. It works fully offline, and everything stays on your phone. One purchase, $2.99, yours forever.
LittleGrowth is a tracker, not a doctor — it shows statistical positions, never health judgments. Interpretation always belongs to your pediatrician.
How it works
Add your child
Name, birthdate, and sex — a photo if you like. Add as many children as you have.
Log a measurement
Height or length, weight, and optionally head circumference, in cm/in or kg/lb.
See the percentile instantly
For example “P62 height, P48 weight”, with a plain-language line like “growing steadily along their curve”.
Watch the curve take shape
Every measurement is plotted on the growth curve bands, birth to five years, across height, weight, head, and BMI-for-age tabs.
Bring it to the pediatrician
A one-tap PDF growth report is coming soon — until then, the charts themselves make check-ups easier to talk through.
What sets it apart
Real Standards, Not Approximations
The curves come straight from internationally recognized child growth standards — public domain, bundled inside the app. Percentiles are computed with the standard LMS method and unit-tested against the published reference values.
Private by Architecture, Not Promise
There is no server, no account, and no network layer in the app at all. Your child's data physically cannot leave your phone.
Instant, Plain-Language Feedback
No spreadsheet feeling. Enter a number, see the percentile and a calm one-line summary right away.
All Your Children, One App
Separate profiles, separate histories, separate curves — switch between them in a tap.
One Price, Forever
$2.99 once. No subscription, no ads, no “premium” curves. Everything the app does, you own.
LittleGrowth vs. typical baby/growth apps
| LittleGrowth | Typical apps | |
|---|---|---|
| Works fully offline | Always | Usually needs a connection |
| Account required | Never | Email or social login |
| Data collected | None — nothing leaves the device | Profiles, measurements, usage analytics |
| Subscription | $2.99 once | Often $30–60/year |
| Ads | None | Common in free tiers |
| Recognized growth standards | Standard LMS method, verified against published reference values | Varies; often unspecified sources |
| Multi-child support | Included | Often a paid upgrade |
| Doctor PDF report | Coming soon, included | Often premium-only |
Speed & privacy, at a glance
Fast by design
- Opens straight to your child's summary — no login wall, no sync spinner.
- Percentile appears the instant you enter a measurement.
- All growth-standard reference data is bundled in the app; nothing is ever downloaded.
- Works identically on a plane, in a basement clinic, or abroad.
Private by architecture, not just policy
- No backend — there is no server to send data to.
- No analytics, no crash reporters, no ad SDKs, no third-party code.
- No account and no identifiers; we don't know you exist.
- All data lives in an on-device database; delete the app and every byte is gone.
Security
Privacy that doesn't depend on trust
- On-device storage only. All profiles and measurements live in a local database inside the app's sandboxed container on your iPhone, protected by iOS's built-in device encryption.
- No network layer at all. The app contains no networking code — the capability to transmit data simply doesn't exist in the app.
- Nothing to breach. There is no server holding your children's data, so there is no database to hack, leak, or subpoena.
- No third-party code. No SDKs means no supply-chain risk from analytics, ads, or tracking libraries.
- Deletion is real deletion. Delete a profile, or delete the app, and the data is gone from the only place it ever existed — there are no server-side copies or backups.
- The growth-standard reference data used for the curves is public domain and ships inside the app binary — nothing is fetched at runtime.
For information only — this app is a tracker, not medical advice. Always consult your pediatrician.
LittleGrowth is an informational tracking tool. It is not a medical device and does not provide medical, diagnostic, or health advice, screening, or recommendations of any kind. A percentile is a statistical position relative to a healthy reference population — it is not a verdict on your child's health. Children grow at different rates, and a single number, high or low, means nothing outside the context only a doctor can provide. LittleGrowth will never tell you whether a measurement is “good”, “bad”, “normal”, or “concerning”, and it will never suggest what to do — by design. For any health decision or concern about your child, consult a qualified pediatrician or doctor. Do not use this app in an emergency.
“Finally, growth charts without a login screen.”
“It shows you the percentile and then — refreshingly — says nothing else. Interpretation stays where it belongs: with your pediatrician.”
“The only baby app I've used that genuinely can't collect my child's data.”
“Bought it once, works offline forever. That's how baby apps should be.”
Frequently asked questions
Q.How much does LittleGrowth cost?
$2.99, once. There is no subscription, no in-app purchase, no ads, and no locked “premium” features. Buy it once and it's yours.
Q.What platforms does it run on?
LittleGrowth is an iOS app for iPhone. Other platforms may come later, but iOS is home.
Q.What happens to my child's data?
It stays on your phone — literally. LittleGrowth has no server, no cloud, and no network code at all. Nothing is collected, transmitted, or shared with anyone, including us. Deleting the app deletes all of the data.
Q.Do I need an account?
No. There is no sign-up, no login, and no email required. Open the app and start.
Q.Does it work offline?
Completely. The growth-standard reference data is bundled inside the app, so everything — logging, percentiles, charts — works with no connection at all.
Q.How accurate are the percentiles?
LittleGrowth uses internationally recognized child growth standards, which are in the public domain, and computes percentiles with the standard LMS method. The calculations are unit-tested against the published reference values.
Q.What age range is supported?
Birth to 5 years. Support for ages 5–19 (the corresponding growth reference) is planned for version 2.
Q.Is this medical advice?
No. LittleGrowth is a tracker only. A percentile is a statistical position among healthy children — not a judgment about your child's health. The app never labels a measurement “good”, “bad”, “normal”, or “concerning”, and never recommends any action. For any health question, decision, or concern, always consult your pediatrician or doctor. Never use the app in an emergency.
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