Grooved: Tennis Swing Form

On-device consistency coach

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

See your tennis swing the way a coach does. Film side-on, and Grooved traces an animated skeleton onto your stroke, measures how repeatable it is, and shows you what changed. All of it runs on your phone. Grooved is not a match-stats app. It is about the form and consistency of one stroke, which is the thing that actually makes your tennis better. SKELETON ANALYSIS Scrub your swing frame by frame with the pose drawn on, or open the contact sheet to see every keyframe at once. Backswing, contact, and follow-through are marked for you. CONSISTENCY, NOT A GRADE Grooved scores how repeatable your swings are across a session and charts it over time. It is a relative measure of your own repeatability. It is not a skill rating, and it never pretends to be one. TECHNIQUE CHECKPOINTS Pick the stroke you are working on, forehand, backhand, slice, or serve, and Grooved checks the checkpoints that actually apply to it. BEFORE AND AFTER Ghost-overlay a swing from today on a swing from your first session. Seeing your old shape next to your new one is the clearest proof that the work is landing. A PRACTICE PROGRAM THAT DOES NOT NEED A COURT Twelve guided sessions across four levels, plus drill sets built for each stroke. Start at your own level instead of grinding through the basics. When you finish, a weekly routine keeps going. LIVE REP COUNTING For the drills the camera can recognize, prop up your phone and Grooved counts your reps as you do them. For everything else it says so plainly and lets you tick the set off yourself. SHARE YOUR BEST SWING Export your cleanest swing as a vertical clip with the skeleton animating on, ready for anywhere you post. HONEST BY DESIGN No invented degrees of rotation from a side-on camera. No guessed UTR, NTRP, WTN, or ITN. No comparison against a named pro. No right-or-wrong verdict. When the footage is rough, Grooved tells you and leaves that session off your trend rather than plotting a number it does not trust. PRIVATE BY DEFAULT Your video never leaves your phone. There is no upload, no account, and no ads. Analysis runs entirely on-device using Apple's Vision framework. Available in English, Vietnamese, and Japanese. Grooved Pro unlocks unlimited analyses, your complete history and trends, the before-and-after overlay, per-metric deep dive, and reference comparison. The free tier keeps three analyses a week, the full practice program, and watermarked sharing, forever. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel in your App Store account settings. Terms of Use: https://www.velorahealth.io/grooved/terms Privacy Policy: https://www.velorahealth.io/grooved/privacy

  • This app hasn’t received enough ratings or reviews to display an overview.

Sharper video, better swing detection, and a clearer read on every swing. RECORDING Fixed a bug that recorded at a far lower resolution than intended, which is why clips looked soft. The guided camera now holds a sharp 1080p at 60fps and keeps focus and exposure tracking through the swing. SWING DETECTION One stroke is now one stroke. A takeback and a follow-through are no longer counted as separate swings. Cuts between clips are no longer mistaken for swings. On an edited video that used to hide the real tennis behind the edits. STROKE RECOGNITION Grooved now tells seven motions apart instead of three: forehand and backhand drives, forehand and backhand slices, serve, overhead, and volley, plus two-handed backhands. Where two shots share one motion, Grooved says so instead of guessing. A drop shot and a slice look identical to a camera, so it will not pretend otherwise. EVERY SWING, CLEARER The per-swing screen now opens with the answer: which checkpoints held, which are worth working on, and a drill for each one. The measurements behind it moved into a section you can open whenever you want them. Shoulder turn is now described in words. A side-on camera cannot measure rotation in degrees, so it no longer prints a number as if it could. SHARING The highlight clip now picks your best-scoring swing rather than simply the clearest one, exports noticeably faster, and the skeleton overlay can be switched off. The consistency card and the before-and-after overlay have been removed. FIXES Importing a video no longer looks frozen, and picking the same video twice now works.

The developer, Ngo Pham Huy, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • Ngo Pham Huy
    Size
    • 3.3 MB
    Category
    • Sports
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 2 more
    • English, Japanese, Vietnamese
    Age Rating
    4+
    In-App Purchases
    Yes
    • Grooved Pro Annual $34.99
    • Grooved Pro Monthly $6.99
    Copyright
    • © 2026 VeloraHealth