TrackJump: Jump Height & RSI

Test your vertical jump with your iPhone and see the movement behind the number. TrackJump helps athletes and coaches record jumps, review each repetition, and follow progress over time. START WITH YOUR FIRST JUMP Use the selfie camera for guided setup. Place your iPhone on a stable support, keep your whole body in view, and stand still while your position is calibrated. Once the camera is ready, jump when you are ready. TrackJump detects each repetition automatically. Try your first jump during onboarding, with no account required. TEST THE WAY YOU TRAIN Choose countermovement, arm-swing, squat, drop, repeated rebound, and single-leg tests. Automatic sessions suggest jump types that you can review and correct. REVIEW EACH REPETITION See estimated jump height and flight time beside your video. Inspect takeoff and landing frame by frame, review body markers, and correct event timing when needed. Contact-based reactive strength index (RSI) and RSI-modified are shown separately when the recording supports them. FOLLOW ATHLETES AND PROGRESS Keep separate athlete profiles, organize coach testing sessions, and retain retests. Compare matching protocols and measurement methods over time. Export results and replay clips to share with an athlete or coach. KEEP CONTROL OF YOUR DATA Test as a guest with data on your iPhone, or create an optional account for private backup. Export your records from Profile. Account deletion is available from Profile or the membership screen. TRACKJUMP PRO A weekly or yearly auto-renewable subscription or an active trial is required to enter the main app after your first-jump demo. Pro includes recording sessions, video import, athlete profiles, and progress review. Your saved data is preserved when access ends; renew or restore access to use the main app again. The app displays the local price and billing period before purchase. Payment is charged to your Apple Account. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel in your Apple Account settings. Deleting your TrackJump account does not cancel an Apple subscription. Camera measurements are estimates. Lighting, framing, frame rate, technique, and visibility of takeoff and landing affect results. TrackJump is a training tool, not a medical device, certified competition measurement, or substitute for a force plate. Use a clear, safe landing area and tests appropriate to your ability. Privacy Policy: https://mytrackspeed.com/jump/privacy Terms of Service: https://mytrackspeed.com/jump/terms Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/