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Consumer mobile app

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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The workout logging view of the fitness app
Logging a session works with no signal and syncs on reconnect.

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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Engineers reviewing work at a shared desk
A delivery planning board covered in cards
Architecture notes and a system sketch on a desk

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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  • Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
  • Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.

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