FLX Dynamics — selling a training programme, then coaching it
A bold fitness brand site shipping a paid 4-week programme — and the groundwork for a video-coaching platform behind it.
In service of People coming back to the gym who want a plan — and a coach who wants to review their form at a distance.
Result A paid programme live behind a one-click checkout, on an architecture costed to scale into video coaching.
The site for FLX Dynamics and its first paid product, FLX RESET — a 4-week gym re-entry protocol sold as a one-off purchase. Built in Astro with Sanity, and architected to grow into a coaching platform where clients upload training videos and get a coach's feedback back.
FLX RESET is a four-week gym re-entry programme, and the site's job is simple: make it feel serious, and sell it. The design is deliberately loud — heavy display type, red on near-black, the programme's terms (4 weeks / 3× per week / full body / commercial gym) stated plainly above a single call to action at £12.99, one-time, instant access.
Behind the marketing site is the more interesting problem, which I planned out in full: turning this into a coaching platform. Clients upload videos of their training, pay for a review, and a coach leaves feedback they can read in their account. The architecture keeps that cheap and simple — Astro in SSR mode, Supabase for auth and records, Stripe for payments, and Cloudflare Stream for video, with clips uploading straight from the browser to Cloudflare so the server only ever handles small text records.