A belt-worn sensor and an iPhone app that measure what actually matters — how high you jump and how fast you move the bar — live at 500 samples per second, validated against slow-motion camera. Built by coaches, proven on real athletes.
Order a belt how it works ↓CMJ, squat jump, Abalakov, approach — full explosive profile in minutes, athlete after athlete. Hold still, GO, jump — it commits automatically.
Wear the belt and just play — every jump counted and measured. Jump load and heights for the whole session, no buttons pressed.
Bar velocity on every set: training zones, velocity-loss auto-stop, bar path — and explosive metrics almost nobody else measures.
Whole roster on one screen — bests, trends, readiness flags, F-V profiles, PDF reports for athletes and parents.
Rosters, athlete profiles, bests and trends, readiness flags, Force-Velocity profiles, branded PDF reports, CSV export. Works fully offline with no account; an optional free account links coach and athlete phones so programs and results sync between them. No subscription, and raw sensor data never leaves the phone.
Cleans and snatches are now measured to the catch: a rep is the dip and the pull, and everything after the catch is ignored until the bar resets, so rep counts match the coach's count. Typed jumps show their takeoff direction (standing, lateral, approach) with horizontal speed. Home gets a session summary sheet, History groups everything by session, and raw sensor storage follows the switch in Settings — it stays on the phone for one month and is never uploaded. On both stores: App Store · Google Play.
We're hand-building the first batch of Explosive Belts for friends, teammates and coaches we train with. You get the hardware at cost, the app free, and direct support from the people who built it — we get your feedback and your numbers pushing the engine forward.
Belt + charging cable + quick-start card. App on the App Store and Google Play. Belts available now: order here.
…or DM @explosive_academy