Reactr – Pitch Speed Converter

Know exactly what your hitters are training against.

Reactr converts pitching machine speeds into equivalent game speeds — so every rep at practice delivers the reaction time your hitters will actually face in a game.
Set a machine speed, set your practice distance, and Reactr instantly shows the game-equivalent velocity and reaction time your hitters are reacting to. Switch to Game Speed mode and work backwards — tell Reactr the game speed you want to simulate and it tells you exactly what to dial into the machine.
Used by baseball and softball coaches who want their practice reps to mean something.

——— HOW IT WORKS ———
A pitching machine set to 60 mph at 40 feet doesn't give hitters the same reaction time as a 60 mph game pitch. The distance is different. The math matters. Reactr does the math instantly — so you can stop guessing and start building practices that match the real demands of the game.

——— TWO MODES ———
MACHINE SPEED MODE
Know what your machine setting actually simulates. Dial in your machine speed and practice distance. Reactr shows the equivalent game speed, reaction time in milliseconds, and a color-coded difficulty rating. Blue through red — easy to track all the way up to elite velocity.
GAME SPEED MODE
Work backwards from the game. Set the game speed you want your hitters to train against and your practice distance. Reactr tells you exactly what to set your machine to. Perfect for building progressions that target specific reaction windows.

——— KEY FEATURES ———
EQUIVALENT GAME SPEED
See the true game-speed equivalent of any machine setting at any distance. Baseball and softball. Every level of play.

REACTION TIME
Know exactly how many milliseconds your hitters have to decide and swing. Under 400 ms is elite. Reactr shows you where every rep falls.

SPEED COLOR ZONES
Blue = Easy to track. Green = Developing challenge. Gold = Competitive speed. Orange = Advanced velocity. Red = Elite. The ring updates live as you adjust.

SHARE YOUR SETUP
Text your practice configuration to the coach setting up the machine. Machine speed, practice distance, equivalent game speed, and reaction time — one tap, sent.

BASEBALL AND SOFTBALL
Full support for both sports with separate speed ranges, distance ranges, and game distances. Dial in the official game distance for your specific level of play in Settings.

——— BUILT FOR THE DUGOUT ———
Works completely offline — no WiFi or cellular required
No account, no sign-in, no cloud
Optimized for iPhone and iPad
Portrait and landscape support
Free. No trial. No subscription. No catch.

——— WHO IT'S FOR ———
Travel ball coaches. High school programs. College staffs. Batting cage instructors. Anyone running a pitching machine who wants their hitters training at the right reaction speed — not just the right number on the dial.

Reactr requires iOS 17 or later. Compatible with iPhone and iPad.