BELLSIX
An interval training clock built to be the default on every gym wall, phone, and wrist
The Idea
The CrossFit timer market is dominated by $300–500 LED wall units controlled by a phone app, while gym software like BTWB and Wodify handles programming but not the clock. BellSix turns any screen a gym already owns, a TV, an iPad, an old phone, or a browser, into a beautiful, brandable wall clock controlled from a coach’s phone or watch.
The clock is free for the widest possible user base. Monetization comes from AI workout generation and ad removal (Pro), plus gym whitelabeling. It’s a live web app at bellsix.com with native iPhone and Apple Watch apps and a planned Apple TV app, all sharing one timing engine so the clock behaves identically everywhere.
Design & Brand
Dead simple, impossible to confuse with anyone else.
A deliberately brutalist system: black field, chalk-white type, a single electric accent used once per screen, and a condensed variable display face whose width-stretch is the motion identity. Voice is plain and direct. No BS.
A locked brand core plus an extended app palette. A hidden 3-6-9 numerology runs through the grays, timings, presets, and pricing, never explained on-site.
Tactical and military-inspired: dry countdown ticks and percussive pitch-drop impacts. No musical bells.
WCAG AA accessibility, reduced-motion support, and offline-first operation. A gym clock cannot fail because the wifi did.
What's Built
A drift-proof deadline timer engine sits under everything. On top of it: presets, a daily deterministic Workout of the Day with archive, a block-based custom builder, and an AI workout generator. Steps can be timed or rep-based, counting down or waiting for a tap on DONE.
Around the clock itself: result logging with benchmark PRs and a shareable result and trend card, a movement catalog with equipment- and injury-aware substitution, and Gym Control, which casts the clock across multiple screens and drives it from a phone or watch. Coach and box pages ship with a printable wall QR. Accounts and Stripe-powered Pro round out the product, with a full design token system driving both web and native.
The Stack
Vite, React, and TypeScript on Vercel, with a single-source design-token pipeline feeding every surface.
Supabase: auth, Postgres with RLS, Realtime for Gym Control, and edge functions.
A shared Swift BellSixEngine package with SwiftUI iOS and watchOS apps. XcodeGen, TestFlight, and Xcode Cloud CI. Cross-platform data lives in shared JSON so web and native can’t drift on the things that matter.
Status
Active development. The web app is live and the native apps are shipping to TestFlight with growing parity. Current focus is native account sync and full feature parity across the Apple ecosystem, with a longer-term goal of a CrossFit affiliate partnership.