Fitness app, iOS and Android
A workout and habit tracker built as one codebase for both stores, with offline logging and a coach-facing web view.
- Client
- Larkfield Health
- Sector
- Consumer mobile app
- Engagement
- Product build
- Duration
- 9 months
What the product is
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What it does
The capabilities the product ships with, and what each one is for.
Works offline and syncs on reconnect
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Role-based access across three user types
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One record of truth, no duplicate entry
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Audited, exportable, and owned by the client
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What we built it with
Chosen for what this product had to do, not for novelty.
Interface
- TypeScript
- React
- Next.js
- Tailwind CSS
Services
- Node.js
- Java
- Spring Boot
- GraphQL
Data
- PostgreSQL
- MongoDB
- Redis
- Elasticsearch
Platform
- AWS
- Terraform
- Docker
- Kubernetes
- GitHub Actions
Observability
- OpenTelemetry
- Grafana
- Sentry
Screens
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In use
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5
App store rating
Across both stores, eighteen months after launch.
62%
Weekly active users
Of everyone who completed onboarding.
1
Codebase, two stores
React Native, with native modules where the sensors needed them.
What users say it changed
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Other work
Projects that shared a constraint, a sector, or a way of working.
Have a problem shaped like this one?
Tell us the constraint you are working under. We will tell you how we would approach it.



