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Mobile Applications
Mobile Applications
Fitness & Wellness

Member App with Live Heart-Rate Zones for an Interval Training Franchise


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Problem

Three systems, one member

A 22-location interval-training franchise ran its member experience across three disconnected systems: class bookings in one tool, billing in another, and Bluetooth heart-rate straps feeding only the in-studio wall screen. Members had no account view, no post-class stats, and no waitlist visibility, so front desks fielded constant booking and billing queries while workout data vanished the moment class ended.

Solution

Unified member app platform

We built a single member app unifying class booking with transparent waitlists, membership billing, and live heart-rate zones. The app pairs with members' existing BLE chest straps, streams zone data to the studio wall display during class, and delivers a personalised post-class summary — time in each zone, calories and streaks — within minutes of the final interval.

Measurable Impact

What changed after launch

App adoption reached 82% of active members within 4 months of rollout

68% of attendees opened their post-class workout summary within 24 hours

Front-desk booking and billing queries reduced by 44% across all 22 locations

Members attending 3 or more classes per week grew from 19% to 31% in 6 months

Tech & Tools Used

What powered the build

React Native
Node.js
Socket.IO
PostgreSQL
Redis
Bluetooth LE (Heart Rate Profile)
Stripe Billing
Firebase Cloud Messaging
Mixpanel

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