To start with BallSpeed, open the app, pick a sport and upload your slow-motion video — you can measure right away as a guest, with no account. After your first measurement you can create an account with your email so you don’t lose your records.
Guest or account?
Guest mode is the fastest path: a profile tied to your device is created and your measurements are saved. When you upgrade to an account (email + password) your records and badges carry over, and you can access them from another device too.
Age verification
We ask for your birth year at sign-up. If you’re below the threshold for your region, public sharing and leaderboards stay off until a parent approves by email. You can keep measuring in any case. Details: Account, data & privacy.
Add to home screen
BallSpeed is a web app (PWA); no app store required.
- iPhone (Safari): Share → “Add to Home Screen”.
- Android (Chrome): menu (⋮) → “Install app” / “Add to Home screen”.
It then opens full-screen and works offline, like a native app.
What’s next?
See how to record the perfect video and marking the ball & calibration.