Rebuilding a Family App from the Ground Up - Live in Six Weeks
With a fixed launch deadline, Formulate rebuilt a family membership platform end-to-end: native mobile app, admin system, website, and full member migration delivered in under six weeks.
Sector
Digital Membership · Parenting & Family · Wellness · E-commerce
Technology
Flutter · React · Supabase · AWS · Claude · Cursor
Scope
Full platform rebuild and migration
Kick-off to live launch
Data tables migrated to new architecture
Third-party analytics platforms integrated
platforms delivered
The Opportunity
A Platform That Had Outgrown Its Foundations
A fast-growing membership platform in the parenting and family wellness space had built real traction, but the existing web portal was holding it back. The vision had evolved: a fully native mobile experience, advanced AI features, and a product worthy of the community it served. What was needed was not an upgrade. It was a rebuild.
Formulate was brought in to deliver the full platform re-engineering: new mobile app, new admin system, new website, and a clean migration of all existing users without losing a single member in the process.
The Challenge
An Immovable Deadline and an Uncertain Migration
There was one non-negotiable: the launch date. It was tied to a well-publicised event in London, and it was not moving.
That created real complexity from the start. The new mobile app was a significant evolution from the existing web portal, not a like-for-like replacement, which meant field mappings for the user migration were not defined upfront. Data structures had to be interrogated, reconciled, and mapped as the build progressed.
Key challenges included:
- —A full platform re-engineering with no existing mobile codebase to build from
- —Migration of 20+ data tables with incomplete field mapping at the outset
- —Payment method migration for existing subscribers from Stripe to Apple Pay and Google Pay
- —Integration with four analytics platforms running in parallel
- —Simultaneous delivery of the admin system and public-facing website
- —All of it in under six weeks
The Solution
Engineering Precision, AI-Assisted Development, Parallel Delivery
Formulate structured the engagement for parallel workstreams from day one: mobile app, admin system, website, and data migration running concurrently rather than sequentially.
01.
Mobile App - Flutter, Built for Both Stores
A brand-new native app was built in Flutter and deployed to both the Apple App Store and Google Play within the delivery window.
Advanced AI features were integrated directly into the product using Claude, giving users a genuinely intelligent in-app experience from launch.
02.
Full Platform Re-Engineering
Rather than patching the existing web portal, Formulate re-engineered the entire platform on a modern stack:
—Flutter for mobile
—React for the web layer
—Supabase for the database
—AWS for infrastructure
This provided a scalable, maintainable foundation for long-term growth.
03.
Data Migration - 20+ Tables, Zero Member Loss
With field mappings not fully defined at the outset, migration required close collaboration and iterative reconciliation.
All 20+ tables were mapped, transformed, and migrated without disruption to existing users.
04.
Payment Migration
Existing subscribers were transitioned from Stripe to native payment methods.
—Apple Pay for iOS users
—Google Pay for Android users
The migration was completed as part of launch to ensure a seamless experience for the existing member base from day one.
05.
Admin System and Website - Same Window
Alongside the mobile app, Formulate delivered a fully functional admin system and public-facing website within the same six-week period.
The Outcome
Live on Launch Night
The app went live in time for the launch event. Existing users were migrated. Payments worked. The admin team had the tools they needed. The public website was live.
Six weeks. One deadline. Delivered.
The platform now gives the business the technical foundation to match its ambitions: a native mobile experience with AI at its core, built to scale with a membership community that is still growing.
Delivery
End-to-end platform rebuilt and launched in under six weeks.
Continuity
Existing members and data migrated with zero loss.
Foundation
Modern architecture built for long-term scale and feature velocity.
Formulate: high-velocity engineering when deadlines are immovable.
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The Next Step
Need critical delivery under pressure?
Whether you are launching a new product against a fixed date or modernising a platform under live constraints, our team can help you deliver without compromise.
Complete the form below to schedule a discovery call with one of our senior engineers.