See Every Swing. Improve Every Shot.
A free, open-source Windows app that automatically captures your golf swing on impact and replays it instantly — right on top of your simulator.
Camera 1
Everything You Need
Built specifically for golf simulator setups. Every feature designed to help you improve without leaving your bay.
Audio-Triggered Capture
Detects the sound of club impact and automatically records 2 seconds before and 4 seconds after — hands-free.
Picture-in-Picture Overlay
Drag a floating replay window on top of your golf simulator. No alt-tabbing, no interruption.
Use Your Phone as a Camera
Turn any phone into a wireless camera with free apps like DroidCam or EpocCam. No extra hardware needed.
Multi-Camera Support
Record from multiple angles at once — USB cameras, phones, or network cameras. Switch views instantly.
Instant Replay
Looping playback starts automatically after every shot. Adjust speed to study your form in detail.
Drawing Tools
Annotate your swings with lines and circles to highlight key positions and angles.
Swing Comparison
Side-by-side synchronized playback lets you compare swings and track improvement over time.
Smart Detection
AI audio classifier learns the unique sounds of your environment for more accurate trigger detection.
Session Management
Organized shot gallery with thumbnails. Browse, replay, and manage recordings from every session.
Free & Open Source
MIT licensed. No subscriptions, no accounts, no data collection. Yours forever.
Up and Running in Minutes
No complex setup. No configuration headaches. Just plug in and play.
Set Up Your Camera
Point a USB camera at your swing area — or use your phone as a wireless camera with a free app like DroidCam.
Arm & Swing
Hit the Arm button and take your shot. The app listens for the impact sound and auto-records your swing.
Review Instantly
Your swing replays automatically in a floating PiP window right on top of your simulator screen.
Replay Without Leaving Your Sim
The Picture-in-Picture window floats on top of everything — your simulator software, launch monitor, any full-screen app. After each shot, your swing replays automatically.
- Drag and resize the overlay anywhere on screen
- Loops automatically — study your swing on repeat
- Adjustable playback speed from 0.25x to 2x
- Always on top — works with any simulator software
Download ReplaySwing
Free and open source. No account needed, no strings attached.
Support the Project
ReplaySwing is free and open source. If it's helped your game, consider dropping a tip.
Report a Bug
Found something broken? Let us know and we'll fix it.