About Top Spin Tracker Pro

Three things I’m not

• I’m not a tennis coach.
• I’m not a touring tennis pro.
• I’m not a great videographer.

And what I am

I’m a club tennis player and a software developer. For years I struggled with forehand topspin. I watched countless videos and took lessons, but the mechanics never fully clicked—until I started training with the TopSpinPro. It taught me the correct contact and brushing path so the ball actually spins forward.

Why I built this app

TopSpinPro is fantastic for feel and mechanics, but it can’t tell you how much spin you’re producing. I wanted objective feedback—real RPM—so I built Top Spin Tracker Pro to pair with the device and show spin rate clearly.

How it works (simple setup)

1. Put your iPhone in a tripod/holder with a ring light behind or near the TopSpinPro.
2. Use the selfie (front-facing) camera and align the TopSpinPro ball near the center of the frame.
3. Open the app and tap Start Monitoring.
4. Hit your topspin reps. The app detects impacts and calculates an RPM decay curve, estimating spin from contact.
5. Tap Stop Monitoring to see a session history and how your RPM changed across reps.

What you’ll see

• Per-hit RPM estimates with visible spin-down (decay) curves.
• Session history so you can track improvement over time.
• Clear, repeatable feedback that turns practice into progress.

Note: TopSpinPro® is a third-party product and trademark of its owner. Top Spin Tracker Pro is an independent app not affiliated with or endorsed by TopSpinPro.