Mobile app and web portal design and development for a remote running coaching platform powered by live video and real-time wearable biometrics.
OneTrack Club connects runners with elite coaches for personalised 1:1 coaching and expert-led team workouts. The platform helps athletes train effectively from anywhere, with coaching informed by live performance data.
We mapped, designed, and developed the full ecosystem: a runner-first mobile experience and a coach/admin web platform built for real-time training delivery. The solution required deep integrations, especially AWS Chime for live sessions and TryTerra for wearable streaming, to create a reliable, data-rich coaching environment.
UI/UX Design
Branding & Graphic Design
Web and Mobile App Development
Solutions Architecture and System Design
API Development & Integration
Live coaching that feels truly live
We implemented end-to-end video sessions with a structured flow (waiting room, session controls, and in-call features) so athletes and coaches can start quickly and stay focused on the workout, not the tech.
Real-time wearable biometrics in the coach dashboard
Using TryTerra, runners can connect leading wearables (Apple Watch, Garmin, Polar, COROS), streaming key metrics like heart rate, pace, and location in real time. Coaches get instant visibility and can adjust guidance on the spot, turning remote sessions into responsive, data-informed training.
Workout Mode built for performance and reliability
We designed a specialised mode that prioritises connection stability by disabling runner video when it’s not needed. Coaches can still track multiple athletes live against custom Rate of Perceived Exertion (RPE) targets and provide audible coaching in real time.
Spotify integration with smart audio ducking
Athletes can play their own Spotify music during sessions while still hearing coaching clearly. Automatic audio ducking lowers the music when the coach speaks, keeping motivation high without missing critical instructions.
Seamless integration with OneTrack’s existing Wix ecosystem
We connected the custom platform to OneTrack’s Wix infrastructure to support unified identity and a smooth member journey. Athletes can log in with existing credentials, manage profiles, and book sessions via embedded web views, reducing friction and improving conversion.
Old.St Labs has been great to work with — flexible, collaborative and genuinely invested in understanding what we wanted to achieve. As a nimble start-up, we needed a partner who could move with us as the business evolved, and they’ve been incredibly supportive throughout our tech journey.
Laura Fletcher of One Track Club
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Projects we are proud of
One Track Club
Mobile and web platform for remote running coaching with live video and real-time biometrics.
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ABC Walls
Design and development of a national incident reporting tool for UK climbing walls
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Pickr
Launched a music industry marketplace app connecting studios, engineers, and session musicians.
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Awesomenicity
Creation of a subscription platform providing maths learning content for teachers.
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Brainie
Developed an AI-powered personalised math tutoring web application with interactive learning sessions.
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East Care
Web platform providing personalised professional development for care givers.
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Asan
Design and development of a sustainable, next-gen menstrual health and period tracking platform.
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Testimonials
Real-world impact, narrated by the teams we’ve accelerated. This is what happens when human vision meets our AI-integrated build cycles
Industry recognition
We’re grateful to be recognised by the people we build for
Our Clutch reviews reflect a consistent focus on thoughtful design, reliable delivery, and clear communication. It’s encouraging to see our approach resonate with teams we’ve had the chance to work with.
Old.St Labs is a software design and development company based in London, building high-quality digital products for startups and established businesses across the UK and US.
