Skip to content
dfirst
Zen Otto2026

A baby tracker for 3am

A newborn feeding, diaper and sleep tracker for iPhone — designed one-handed, for the moments you actually use it.

A newborn feeding, diaper and sleep tracker for iPhone — designed one-handed, for the moments you actually use it. Brand, design and build, in-house.

What we delivered
Brand identityProduct strategyUX & UI designNative engineering (iOS)Launch
Year
2026
Role
End to end
Scope
Brand · Design · Build
Platforms
iOS

The challenge

New parents reach for a tracker while holding a baby, half-asleep, often mid-handover. The app had to work with one thumb in the dark, keep a clear record of the day, and feel reassuring rather than clinical.

Built for one hand at 3am

New parents reach for a tracker while holding a baby, half-asleep, mid-handover. The core interaction is a dial you start and stop a feed with using one thumb, with everyday controls kept within reach — it works in the dark.

Zen Otto app screen 1
Zen Otto app screen 2

Warm, not clinical

A medical tool shouldn't feel cold at the hardest hour. We built a soft identity around an otter mascot with Pink and Blue themes, so the record of a long night feels reassuring rather than sterile.

Zen Otto app screen 1
Zen Otto app screen 2

One shared record

Feeds on either side, bottles, pumping, diapers, sleep, weight and solids all pull into one day, with a weekly summary and a nighttime view. A handover screen and iCloud sharing keep every caregiver on the same record.

Zen Otto app screen 1
Zen Otto app screen 2

How we did it

  1. 01

    Designed the core interaction around a dial you can start and stop a feed with one hand, with everyday controls kept within thumb reach.

  2. 02

    Built a warm, soft identity — an otter mascot, Pink and Blue themes — so a medical tool feels human at the hardest hour.

  3. 03

    Pulled the day together: feeds on either side, bottles, pumping, diapers, sleep, weight, solids and more, with a weekly summary and a nighttime record.

  4. 04

    Added a handover screen and per-baby logs, with iCloud sharing so caregivers keep one shared record.

The outcome

A baby tracker that meets parents in the moment they need it — one-handed, calm, and warm. Live on the App Store, and a clean demonstration of design-led product work from brand through build.