Frame-by-frame tracking
Lock the exact frame the ball leaves the face, advance a few frames, tap the ball. The app converts pixels per frame into real ball speed using your device's recorded frame rate.
Available on iPhone & iPad
Golf Radar.
Ball speed from any swing video.
Film your drive, mark your club and the ball, and Golf Radar computes real ball speed frame by frame — no launch monitor, no sensors, just your iPhone.
CLUB
Driver · 45.5″
SLOW-MO
240 FPS
Features
Physics, not guesswork.
No AI estimates, no cloud magic. Golf Radar measures distance over time, using your club's real length as the on-screen ruler.
Your club is the ruler
Driver, iron, wedge or putter — pick your club and its real length calibrates the scene. Fine-tune it to match your own set.
Record or import
Shoot with the built-in high-framerate camera, or import any slow-mo swing already in your gallery.
Slow-motion aware
Slow-mo metadata is detected automatically, or set the factor yourself — 1×, 1/2×, 1/4×, 1/8×, 1/16× — so the math always stays true.
Pinch-to-zoom precision
Zoom deep into the frame to drop calibration and tracking dots with pixel accuracy.
Offline & private
No account, no uploads, no internet needed. Every frame is processed locally on your iPhone.
Ball speed
156.3mph
Driver 240 fps 1/8× slow-mo
The readout
One number that
actually means something.
Ball speed is the purest measure of strike quality. Track it across sessions and find out whether that grip change, new shaft, or last lesson really made you faster.
- Works with driver through putter
- mph or km/h — your pick
- A result in a couple of taps
How it works
Four steps. One number.
01
Import & trim
Pick a swing video and isolate the moment of impact.
02
Find the impact
Step frame by frame to the millisecond the ball leaves the face.
03
Calibrate
Drop a dot on the top of your club, its sole, and the ball.
04
Track & read
Advance 1–3 frames, tap the ball again — your speed appears in mph.
Clubs
Every club in the bag.
Each club ships with its real-world default length — tweak it to match your own set for dialled-in accuracy.
Driver Woods Hybrids Irons Wedges Putter + Custom length
FAQ
Golf ball speed questions.
Common questions about measuring golf ball speed with just an iPhone.
How does Golf Radar measure ball speed without a launch monitor?
Golf Radar analyses a swing video frame by frame. You mark the top and sole of your club — its real length becomes the on-screen ruler — then tap the ball across two or three frames after impact. The app converts pixels per frame into real-world ball speed using your device's recorded frame rate. Pure geometry and physics, no AI guesswork.
Is Golf Radar free on iPhone?
Yes. Golf Radar is free to download on the App Store for iPhone and iPad. It works with slow-motion swing videos you already have in your gallery.
Which iPhone do I need for accurate readings?
Any iPhone or iPad able to record slow-motion video works. For driver ball speeds above 150 mph, 240 fps slow-mo (iPhone 8 and newer) gives the sharpest, most accurate readings.
Can I import an existing slow-motion video into Golf Radar?
Yes. Record inside Golf Radar or import any slow-mo clip from your gallery. The app reads the embedded slow-motion factor automatically, or you can set the multiplier yourself — 1×, 1/2×, 1/4×, 1/8× or 1/16× — so the reading stays true to real-world speed.
How accurate is Golf Radar compared with a real launch monitor?
With a stable phone, a face-on camera angle and at least 120 fps, Golf Radar is typically within a few percent of a hardware launch monitor — accurate enough to track progress, compare clubs and benchmark your swing.
Is Golf Radar available on Android?
Golf Radar is currently available for iPhone and iPad only.
Other apps
One more app for golfers.
Nothing to do with ball speed — just another free tool worth having in the bag.
TapTee
A free digital scorecard that replaces the paper card — enter your score hole by hole, right from your phone.
Know your real ball speed.
Free to download. Works with swing videos you already have.