Mobile App

Breastfeeding Companion App

A breastfeeding companion that takes the mental math off a new parent’s plate — tracking every ounce of stored milk, what’s fresh, what’s about to expire, and whether there’s enough for tomorrow. Designed and built by Lenox Systems as a cross-platform mobile app (shown here anonymized).

The problem

Breastfeeding runs a constant, invisible spreadsheet in a parent’s head: how much milk is stored, which bag expires first, how much is needed for a day away, whether to pump now or later. It’s mental load piled on top of exhaustion — and getting the math wrong means either wasted milk or coming up short at the worst possible moment.

What we built

A warm, fast mobile app that runs the milk math for you. Log a pump or a feed in a couple of taps; the app keeps a running inventory, splits it across fridge and freezer, watches expiry dates, tells you what to use first, and works out whether you’re covered for time away — with guidance and a tone that supports rather than nags.

Milk-math engine

Real-time inventory across fridge and freezer, with conversion coverage and a clear “use this first.”

Expiry protection

Tracks freshness and surfaces what’s about to expire, so no hard-won ounce gets wasted.

Two-tap logging

Add, move, or use a session in seconds — designed for one-handed use at 3 a.m.

Time-away planning

Works out whether stored supply covers a shift, a trip, or hours out of the house.

In-app guidance

AAP-backed, practical how-to content, right where the decisions get made.

Made to feel calm

Soft, encouraging design in both light and dark — a tool that reassures instead of adding pressure.

iOS + Androidone shared codebase (Expo / React Native)
Light + darkfully themed, both modes
Real-timeinventory & expiry tracking

The stack

One TypeScript codebase shipping to both app stores, with a managed backend for sync and accounts.

Expo 54 React Native 0.81 React 19 TypeScript Supabase (Postgres)

The result

A breastfeeding tool that feels less like software and more like a calm hand on the shoulder — accurate milk math, zero spreadsheets, always in your pocket. One less thing for a new parent to hold in their head.

Building something like this?

Mobile products that have to feel effortless — and get the details right — are exactly what we build. See what we do for small businesses, or get in touch.