
Kortsy
Your online tennis coaching
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Free
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About
Kortsy is the all-in-one app for online tennis coaches. Coach your players from anywhere, on your schedule, without living on a court.
Your players film their tennis. You review it with voice, drawings and a side-by-side camera, then send it back with a clear plan. No more "send me a clip and I'll take a look" - everything your players need sits in one place.
WHAT YOU CAN DO
• Review footage with voice-over, on-screen drawing and your own face-cam
• Set each player's weekly training - drills, workouts, session plans and tasks
• Track their progress across every part of their game
• Message your players and jump on a call when they need you
• See who's doing the work and who's going quiet, and nudge them in a tap
WHY COACHES USE KORTSY
Your income shouldn't be capped by the hours you can stand on a court. Kortsy lets you coach more players, in less time, from wherever you are - and give them a better experience than a weekly in-person lesson ever could.
Whether you've got your first online player or a full roster, Kortsy gives you what you need to run it like a pro.
Players join free when their coach invites them.
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What's New in Kortsy
1.0.6
October 25, 2026
- Smoother video analysis recording: no more lag while you draw and zoom, and long reviews now save in full - Choose which areas of the game a review rewards when you send it - Log matches and practice sessions on a full page, with footage attached - Progress bars now climb when players earn XP - Small fixes and polish
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