Sports
RADARspeed: Slow-Mo Speed
By iCoder
Download on theApp Store ↗$1.99 · US storefront
App Store ratingNot rated0 ratings
Age rating4+Apple content rating
CompatibilityiOS 18.0+Check your device
Version1.0Updated 2026-10-12
About RADARspeed: Slow-Mo Speed
Turn your iPhone into a radar gun. RADARspeed measures the speed of anything you can film — a sprinter, a pitch, a car, a cyclist, an arrow — using the exact timestamp of every frame in a slow-motion video. HOW IT WORKS Speed is distance divided by time. RADARspeed reads the precise presentation time of each frame, so timing is accurate to a single frame: 4.2 ms at 240 fps. You provide the distance with a quick on-screen calibration, mark the object, and get its speed with an honest ± range. THREE WAYS TO MEASURE • Speed Trap — place two gates…
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Turn your iPhone into a radar gun. RADARspeed measures the speed of anything you can film — a sprinter, a pitch, a car, a cyclist, an arrow — using the exact timestamp of every frame in a slow-motion video.
HOW IT WORKS
Speed is distance divided by time. RADARspeed reads the precise presentation time of each frame, so timing is accurate to a single frame: 4.2 ms at 240 fps. You provide the distance with a quick on-screen calibration, mark the object, and get its speed with an honest ± range.
THREE WAYS TO MEASURE
• Speed Trap — place two gates on landmarks a known distance apart and mark the frames where the object crosses each one. Works from any camera angle and is the most accurate method.
• Side View — drag a line across anything of known length in the object's path, such as a car's wheelbase or a lane marking, then track the object.
• Top-Down — place four corners on a rectangle on the ground and RADARspeed maps the scene to a true bird's-eye view, even when you film at an angle.
TRACK AUTOMATICALLY OR BY HAND
Draw a box around the object once and Auto-Track follows it frame by frame with Vision, or tap to mark it yourself with a precision loupe and frame-by-frame jog wheel.
RECORD OR IMPORT
Record slow motion at up to 240 fps with a fast shutter right in the app, or import videos from Photos and Files.
RESULTS YOU CAN SHARE
• Speed in mph, km/h, m/s, ft/s or knots
• Distance, elapsed time, frames, peak speed and a speed profile chart
• Export a video with timestamp, gates, track and measured speed burned in
• Save results to your history
PRIVATE BY DESIGN
No accounts, no ads, no tracking and no subscriptions. Your videos never leave your device.
Perfect for coaches, athletes, parents, car enthusiasts, science classes and the simply curious.
HOW IT WORKS
Speed is distance divided by time. RADARspeed reads the precise presentation time of each frame, so timing is accurate to a single frame: 4.2 ms at 240 fps. You provide the distance with a quick on-screen calibration, mark the object, and get its speed with an honest ± range.
THREE WAYS TO MEASURE
• Speed Trap — place two gates on landmarks a known distance apart and mark the frames where the object crosses each one. Works from any camera angle and is the most accurate method.
• Side View — drag a line across anything of known length in the object's path, such as a car's wheelbase or a lane marking, then track the object.
• Top-Down — place four corners on a rectangle on the ground and RADARspeed maps the scene to a true bird's-eye view, even when you film at an angle.
TRACK AUTOMATICALLY OR BY HAND
Draw a box around the object once and Auto-Track follows it frame by frame with Vision, or tap to mark it yourself with a precision loupe and frame-by-frame jog wheel.
RECORD OR IMPORT
Record slow motion at up to 240 fps with a fast shutter right in the app, or import videos from Photos and Files.
RESULTS YOU CAN SHARE
• Speed in mph, km/h, m/s, ft/s or knots
• Distance, elapsed time, frames, peak speed and a speed profile chart
• Export a video with timestamp, gates, track and measured speed burned in
• Save results to your history
PRIVATE BY DESIGN
No accounts, no ads, no tracking and no subscriptions. Your videos never leave your device.
Perfect for coaches, athletes, parents, car enthusiasts, science classes and the simply curious.
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