Lyapp
The warm, private diary of a baby's first year: sleep, feeds, solids, appointments, vaccines and medications in one iOS app, personalized to their age.
- Client
- In-house product · iOS
- Modules
- Mobile apps
- Year
- 2026
- Stack
- React Native · Live Activities · Dynamic Island



Where we started
At 3 a.m. nobody wants to open a spreadsheet. New parents jot down sleep, feeds and appointments in scattered notes and can't tell whether what they see is normal for their baby's age. We wanted something fast to use one-handed, warm and 100% private.
Their sleep, at a glance
One tap starts a nap or the night. The timer stays alive on the Lock Screen and in the Dynamic Island.
See the full case →Is this normal for their age?
The weekly summary compares every night with typical ranges by age from the American Academy of Pediatrics.
See the full case →Patterns you would miss
The Coach reads your logs and tells you what changed this week. The AI only answers if you allow it.
See the full case →A PDF for the pediatrician
Feeds, sleep, vaccines and medication in a report ready to share. Everything lives on your phone: no accounts, no cloud.
See the full case →Summary
Week of Sep 12–18Babies at 14 months typically sleep 11–14 hours. Lua is in that range.
Coach
Report
To share with the pediatricianNap in progress: 0:00
Weekly average 13.6 h, inside the typical range.
What we shipped
-
5f72d0801.live-sleep-timerfeat: Live sleep timer
One tap starts a nap or the night. The timer lives on the Lock Screen and in the Dynamic Island with Live Activities.
-
95802ac02.feeding-logfeat: Feeding log
Breastfeeding with a per-side stopwatch, bottles with milliliters offered and taken, and solids with foods and amounts.
-
cb8d85003.summary-vs-pediatric-rangesfeat: Summary vs. pediatric ranges
Weekly charts compared with typical ranges by age, based on American Academy of Pediatrics guidelines.
-
019adf404.optional-ai-coachfeat: Optional AI coach
Spots patterns in the logs and answers questions only if the user explicitly allows it.
-
37a839805.health-agenda-reportsfeat: Health agenda & reports
Appointments, vaccines and medication with scheduled doses, plus PDF reports to share with the pediatrician.
-
6db593c06.privacy-by-designfeat: Privacy by design
No accounts, no cloud, no ads and no trackers: all data lives on the phone.
What changed
- Live on the App Store: version 1.0 on August 29 and version 1.1 on September 21.
- Version 1.1 added multiple babies, temperature logging with pediatric fever thresholds and a timer with pause.
- Available in English and Spanish, built for families in any country.
