TwinRoutine: Twin Baby Tracker

TwinRoutine is the simplest logbook for parents of twins. Track sleep, diapers, feeds, baths, and more — with one app designed for two babies.

WHY TWINROUTINE?

Raising twins means double everything: double feeds, double diapers, double naps. TwinRoutine gives you one place to log it all, fast.

SAY IT ONCE — BOTH TWINS LOGGED

Ask Siri without opening the app, without unlocking your phone. Say the name of one twin, or say nothing at all and it logs for both. Works the day you install it — no shortcuts to build, no internet needed.

PRIVACY FIRST — NO COMPROMISES

No account required
No email, no login, no sign-up
No internet connection needed to use the app
No analytics, no tracking, no third-party SDKs
Your logs stay on your device, synced privately via your personal iCloud (managed by Apple, never by us)
We never see, store, access, or sell your data — we literally cannot
No ads. Ever.
No subscription. Pay once, keep it forever.

KEY FEATURES

Three taps to log any activity
Voice logging with Siri — one phrase for both twins
Live Activity: the nap timer runs on your Lock Screen
Separate tracking for each twin, plus "Log for Both" when they share
Parallel View: see both twins' days side by side — spot sleep overlaps, feeding patterns, and rhythms
Home screen widget: last feed, diaper, and sleep for both twins at a glance
Growth charts with percentiles for both twins
Corrected age, adjusted automatically for premature birth
Milestone memories — from first smile to first steps
Sleep timer with manual nap entry
Doctor appointment reminders
Unlimited history with charts (Pro)
CSV and PDF export for pediatrician visits (Pro)

FREE VS PRO

Free: Sleep, diapers, and feeds, with 7 days of history. Everything you need to start.

Pro: One payment, no subscription. Unlock Bath, Temperature, Doctor, Medicine, Siri logging, unlimited history, Parallel View, Growth, Milestones, charts, and export.

All new users get a 10-day free trial with all Pro features unlocked.

IMPORTANT — MEDICAL DISCLAIMER

TwinRoutine is a digital logbook — the equivalent of pen and paper. It is NOT a medical device. It does not diagnose, treat, monitor, or advise on any health condition. Always consult a healthcare professional for medical concerns about your children.

Built by a parent, for parents of twins who already have enough on their plate.