Reviving a Mobile Platform Supporting Hundreds of Trainers Worldwide
Industry
SaaS and Apps
Company size
1 - 10 Employees
About
The Dunstan Baby app helps identify babies specific cries so parents can respond quickly and naturally
"They overcame challenges with intelligence and urgency."
The Situation
The Dunstan Baby Language is a globally recognised method for understanding infant communication — a system that identifies distinct sounds newborns make to signal specific needs. George Dunstan had built a mobile app to support the method. It had been in the market, gone dormant, and sat unmaintained on the App Store while life moved on.
The revival wasn't cosmetic. George runs a global trainer network — hundreds of certified Dunstan Baby Language instructors operating around the world, running classes and supporting new parents. The app is a tool those trainers reference and direct their students to. With it dormant and failing on current devices, George had a working methodology with no working software behind it.
He needed it operational again. Not rebuilt. Not redesigned. Operational.
The technical problem: An app that's been dormant for several years accumulates compatibility risk fast. iOS and Android release major OS updates annually. Libraries deprecate. App Store submission requirements evolve. An app built to 2021 standards may crash on current devices or fail store review entirely by 2024 — without a single line of its core logic having changed.
Why they called us
George had a working relationship with Halcrow from previous projects. When the revival became a priority, the call was direct.
The brief was deliberately narrow: get the app working on current iOS and Android, pass App Store review, and return it to a state the trainer network could rely on. No feature additions. No redesign. Revival, not rebuild.
Law 5: Earlier beats perfect. The smallest intervention that achieved the goal was the right intervention. A full rebuild would have taken months and been unnecessary — the app's core functionality was sound. The infrastructure around it needed updating.
How we worked
Scope: One day of focused engineering.
iOS and Android compatibility updates: dependencies updated to current versions, deprecated APIs replaced
App Store compliance: updated to current Apple and Google review requirements
Submission and review: both stores passed without rejection
Smoke testing: core user flows validated on current device types
The app went from dormant to live and functional in a single working day.
WHAT CHANGED
The Dunstan Baby Language App was live on both stores within days of the engagement beginning. Hundreds of trainers around the world could reference it again. Parents attending classes could download and use it during and after sessions.
The engagement was small. That was the point. Not every engagement needs to be a multi-month build. Sometimes the right answer is a precisely scoped day of work that solves a real problem completely.
WHY THIS WORKED
Dormant apps have a maintenance window. Don't let it close.
Every app left unmaintained accumulates compatibility risk. After 12–18 months without updates, a submission to the App Store often fails review due to deprecated APIs or outdated privacy manifest requirements. After 24 months, crash rates on current devices increase. After 36+ months, the accumulation can make a targeted revival uneconomical — the only option becomes a full rebuild.
The Dunstan Baby Language App was reactivated because the window was still open. If it had waited another year, revival at this scope wouldn't have been possible.
If you have a dormant app you want to revive, the first conversation with Halcrow is free. We'll tell you whether it's a day's work or a month's work before you commit.