MultiSwingDual-camera golf swing replay · iPhone & iPad · 1–3 devices
Hit a ball. Watch the replay. Know what to fix.
MultiSwing replays every golf swing by itself, seconds after you hit it — one angle or two, side by side and in sync — then reads your body through the swing and names the fault worth working on. Use one device, or up to three.
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Instant replayNo button, every swing
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One or two anglesDown the line, face on
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What to work onSeven faults, read off the body
Coming to the App Store · iOS 18.2 or later
Setups
Bring one, two or three devices.
Each arrangement below is a mode you choose on the start screen. The app then tells every device the job it has.
How it works
Set it up once, then stop touching your phone.
One device needs three steps. Two or three devices need a fourth at the front, to introduce them to each other. After that the app is watching for a strike and you are just hitting balls.
Connect
Open MultiSwing on each device, pick the same session, and give each one its job. Wi-Fi and Bluetooth on — they talk straight to each other, with no network in between. On a single device there is nothing to connect, so this step doesn't appear.
Place
Every device about 3 m (10 ft) away, at hip height, a tripod under each. One behind the ball down the line, one square to your chest, and any replay screen where you can see it from address.
Frame
Fit your whole body and the full swing inside the frame. The banner turns green the moment the app can see you.
Swing
The replay opens by itself on the replay device, every time. Practice swings and waggles are ignored, so the library stays clean.
Detection
It waits for the strike, not for you to press record.
MultiSwing watches and listens at the same time — body motion through the camera, the crack of impact through the microphone. A swing is only logged when both agree, which is why rehearsals, waggles and the player in the next bay don't end up in your library.
Swing analysis
Instant Swing Analysis detects and alerts on swing flaws.
It reads the swing you just hit and is already there when the replay opens. One tap on the overlay turns it off and on. The same switch sits in Settings, and flipping either keeps both in step.
Every fault is pinned to the point in the swing where it happens:
Tap address, top or impact to scrub straight to that frame.
Each check needs an angle that can see it — sway, spine tilt and hand position
read face on, early extension needs down the line. Film both and the whole set runs.
Specifications
What it needs, and what it does.
| Capture | 60, 120 or 240 fps · highest rate depends on the device |
|---|---|
| Replay speed | 1× · 0.5× · 0.25× · 0.1× |
| Angles | Down the line and face on, shown side by side and synced on impact |
| Connection | Device to device over Wi-Fi and Bluetooth. No router, no account, no cloud. |
| Library | Every detected swing saved and grouped by day; export to Photos |
| Placement | About 3 m (10 ft) from the ball, at hip height. Tripod recommended. |
| Requires | iOS 18.2 or later · iPhone and iPad |
Questions
Filming your own swing, answered.
Can I film my own golf swing without someone holding the phone?
That is the whole point of it. Put each device on a tripod about 3 m (10 ft) away at hip height and hit balls. Detection fires on the strike, so nobody presses record and nobody stands behind a camera instead of playing.
How do I record a golf swing from two angles at once?
One device behind the ball down the line, one in front of you square to your chest. They connect straight to each other and line their clips up on impact, so the replay shows both angles at the same instant of the swing.
Do I need two phones?
No. One device records and replays on its own, filming whichever angle you want. A second gives you either a dedicated replay screen or a second angle. A third gives you both angles plus a screen to watch them on.
Down the line or face on — which should I film?
It depends what you are chasing. Sway, spine tilt and hand position at the top read face on. Early extension and the path of your hands through the downswing need down the line. Film both and every check runs.
Does it need wifi, a signal or an account?
None of the three. The devices find each other directly over Wi-Fi and Bluetooth with no router in between, and the analysis runs on the device itself. Nothing is uploaded and there is nothing to sign in to.
What frame rate do you need to see a golf swing?
120 fps is enough to read the positions clearly. 240 fps, on devices that support it, still holds together when you slow the replay to a tenth of speed. Both sit in Settings, alongside 60.
Will it fill up with practice swings?
No. A swing is only logged when the camera and the microphone agree — body motion and the sound of the strike together. Rehearsals, waggles and the player in the next bay are ignored.
What does it need in order to see you?
Your whole body and the full swing inside the frame; the banner turns green the moment the app can see you. Good light and a background without people walking through it make detection more reliable.
Almost there
Put the second camera where it belongs.
Dual-camera golf swing replay and analysis, in final testing now. Coming to the App Store for iPhone and iPad.