Lucas: Baby Tracker & Log

Free 7-day trial, then one simple yearly plan. Track feedings, sleep, diapers, and growth. Export PDF reports for your pediatrician. Works offline, even at 3 AM.

Lucas helps new and experienced parents keep an effortless, accurate log of every feeding, diaper, sleep, pumping session, milestone, growth measurement, and medical appointment, without the noise of social feeds or ads.

WHAT YOU CAN TRACK • Feedings (breast, bottle, solids, tube) • Sleep, naps, and night wakings • Diapers: wet, dirty, color and consistency • Pumping with side and amount • Growth: weight, height, head circumference (WHO + CDC + Fenton charts) • Immunizations and the full pediatric schedule • Medicines with smart dosage calculator • Doctor visits, allergies, jaundice, eczema, reflux, teething, and more • Activities, mood, and parent wellbeing (EPDS)

DESIGNED FOR REAL LIFE • Offline-first: works on a plane, in the basement, anywhere • Apple Watch app + complications for one-tap logging • Home and lock screen widgets • Live Activities for active timers • Siri Shortcuts and Quick Actions • Beautiful in light and dark mode

SHARING • Invite caregivers (partner, grandparent, nanny) to keep the same log in sync across devices • Connect a pediatrician through their own portal so they can see growth and medical records, with your permission and only on the modules you choose • Generate doctor-ready PDF reports for visits

PRIVACY • Your baby's data is yours. We never sell it. • Your sign-in is end-to-end encrypted in transit. Your records sync over TLS 1.3. • No advertising trackers. No third-party analytics on baby data.

LUCAS PREMIUM Lucas is free to download and free to use the basics forever. Lucas Premium ($4.99/year, with a 7-day free trial) unlocks Insights, doctor-ready PDF reports, caregiver and pediatrician sharing, widgets, and the Apple Watch app. Cancel anytime in iPhone Settings → Apple ID → Subscriptions.

Subscriptions auto-renew unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in your Apple ID settings. Privacy: https://lucas.ilbg.co/privacy.html - Terms: https://lucas.ilbg.co/terms.html