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Consumer App

Stridewell: Adaptive running coach

A subscription app whose training plans adjust to each runner's recovery, schedule and wearable data.

Sector
Health & Fitness
Typical client
Consumer fitness startup
Typical timeline
16 weeks
Typical team
3 engineers, 1 designer
Adaptive training plan, weekly load and session guidance in the runner app
Engagement dashboard tracking plan adherence, active runners and subscriber retention
Subscription funnel from install to annual plan with channel performance

About this project

Most running plans are fixed documents that ignore a missed session or a bad night's sleep. Runners fall behind, feel they have failed the plan and stop opening the app within weeks.

Stridewell recalculates each week from recent effort, sleep and missed sessions. The product work is paired with retention analysis and subscription experiments, so coaching quality and commercial performance improve together.

Objectives

  • Personalise plans automatically from wearable data
  • Reach strong day-30 retention for a subscription product
  • Launch on iOS and Android from a single codebase

What’s delivered

  • Flutter app with offline workouts and audio coaching
  • Apple Health and Google Fit data sync
  • Plan-adaptation service with explainable adjustments
  • Subscription billing and paywall experiments

Target outcomes

35%

day-30 retention goal

6%

trial-to-paid objective

1

codebase for both stores

<1.5s

cold-start budget

Technology

  • Flutter
  • Python
  • Firebase
  • Google Cloud
  • RevenueCat

Services involved

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