Practice smarter. Get coached instantly.
Arc analyzes your swing in real-time during your range session—no waiting, no uploading, no extra equipment.
Just hit balls. Arc watches, analyzes, and gives you one clear cue after every swing.
The range session problem
Traditional practice feedback is too slow
- You hit 100 balls but don't know what you're reinforcing
- Recording swings means stopping practice to review footage
- Lessons are expensive and you can't take your coach to the range
- By the time you get home and upload videos, the session is a blur
How Arc works
1. Set up your iPhone
Mount your iPhone facing down the line or face-on. Arc continuously monitors for swings using on-device motion detection—no manual recording needed.
2. Hit balls normally
Arc automatically detects each swing, extracts 4-6 key frames (address, top, impact, follow-through), and sends only those frames for analysis—not the entire video.
3. Get instant coaching (3-5 seconds)
Arc's AI analyzes your swing sequence and identifies one consistent pattern. You hear the coaching cue through audio, and see the full 4-line analysis on screen.
4. Review your session later
Every swing is saved with its coaching feedback overlaid. Compare swings, track progress, and see exactly what changed over time.
Built for real practice sessions
On-device motion detection
Lightweight motion detection runs continuously on your iPhone. No cloud upload of full videos—only keyframes.
Multi-frame analysis
Unlike single-image analysis, Arc sees your swing as a sequence—identifying patterns across address, top, and impact.
Quality gates
If your frames aren't usable (bad lighting, wrong angle), Arc tells you exactly how to fix your setup.
Works on silhouettes
Range backlighting? No problem. Arc enhances frames specifically for silhouette analysis.
Automatic clip extraction
Each swing becomes its own 3-5 second clip with analysis overlaid. No more scrubbing through hour-long videos.
Audio + visual feedback
Hear the coaching cue while you practice. Full analysis shows on screen and saves with your swing.
Privacy-first design
On-device processing
Motion detection and video processing happen on your iPhone
Minimal data sent
Only 4-6 keyframes per swing, not full videos
No data selling
Your swings are yours. We don't sell or share them.
FAQ
How is this different from uploading videos after practice? +
Arc gives you feedback in 3-5 seconds, during your session. You don't lose momentum waiting to upload or review. Plus, Arc automatically saves each swing as a short clip—no manual trimming or scrubbing.
Does it work for beginners? +
Yes. Arc focuses on one high-impact pattern per swing—not overwhelming you with 10 things to fix. The quality gates also help you set up correctly from day one.
What if I'm backlit or recording in poor lighting? +
Arc is specifically built to handle silhouettes and backlit ranges. It enhances keyframes for better analysis and will tell you immediately if the setup isn't usable.
Do I need a tripod or special mount? +
You'll need a way to keep your iPhone stable (tripod, bag stand, or leaned against something). Arc checks your angle and distance and tells you if adjustments are needed.
Can I use this during lessons with my coach? +
Absolutely. Arc is designed to complement coaching, not replace it. Your coach can review saved swings with analysis overlaid, or use Arc's real-time feedback to guide practice drills.
How long does a session last? +
Arc is built for 30-60+ minute range sessions. It runs continuously without overheating or draining your battery excessively.
What happens to my swing videos? +
Arc saves individual swing clips (3-5 seconds each) with analysis overlaid. You can review, compare, or delete them anytime. Full details in our Privacy Policy.
Ready to transform your practice?
Join the waitlist for early access to Arc
No spam. One email when invites open.