Exit velocity, throw velocity, throw angle and bat speed — each measured by a validator to the Caliber standard.
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Tap a block to open or close it. Arrows plan future weeks.
Drag a block to set its start. Booked blocks lock — cancel to move them.
Caliber fills the blocks you open. Each 1-hour slot groups up to 4 athletes by the metrics they requested. Tap a day to see the run sheet.
Measure exactly to Protocol v2.1. Every verified number depends on it.
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Changes publish as a new protocol version. Every official is held to the latest published standard.
Anyone can say they run a 4.4. Caliber athletes get measured by a vetted, trained official to a fixed protocol — and lock it into a record scouts can trust.
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Book a measurement, build a verified profile, get seen by real programs.
Get certified, set your availability, and earn measuring athletes in your area.
Search verified metrics, build watchlists, and contact families — free at launch.
Public leaderboard of verified personal bests. No history, no contact — just the numbers, by age group and area.
Verified personal bests only — measured by a certified official to the Caliber standard. No history, no self-reported test numbers.
On verification, protocol, and building trust in youth athletics.