Instant Video Feedback

Train Smarter
Perform Better!

PERFECT FOR COACHES, ATHLETES, AND GOLFERS

Review Actions
Fast & Easy

Frustrated by making the same mistakes? Turn your device into a sports mirror that replays your actions with a delay. Watch, correct, and improve your form in real-time. Hands-free video feedback for more efficient and satisfying training.

💡 Pro Tip: Use Dynamic Buffer to extend the delay on the fly and never miss a moment!

golfer using Video Delay Instant Replay app for swing practice

Analyze Technique
Improve Your Coaching

Replay in slow motion or inspect frame by frame for in-depth movement analysis. Highlight elements needing refinement—draw angles, add voiceover, and share clips with players. Track your athletes’ progress and assess how changes in technique impact their performance.

Features Ensuring
Successful Training

  • Two workout modes: DELAY & SLO-MO
  • Replay View* – analyze, measure, voiceover, and share.
  • Remote* – connect two devices or GoPro camera.
  • Dynamic Buffer* – extend the video feedback.
  • Recording – save your training sessions.
  • Motion Detection Grid – align your pose & moves.

 * Available only on iOS devices.

Two iPads showing how coaches can use Replay feature for volleyball and basketball training

Testimonials

Download VDIR
& improve your form

FAQ

What is the Video Delay Instant Replay app?

The VDIR app provides instant video feedback by displaying a delayed replay of actions, allowing athletes and coaches to analyze and improve performance without needing to press record.

  • Position your device, preferably on the tripod, ensuring the front camera faces you.
  • Select practice mode: DELAY or SLO-MO
  • Press the START button and set a buffer time suitable for your activity (e.g., 3-5 seconds for quick actions like swings; 30-40 seconds for exercises like squats).
  • Perform your action and watch the delayed video to instantly assess and correct your form.
Absolutely! VDIR is perfect for team coaching – it provides quick feedback to the trainers and players.
  • After each repetition, athletes can review their performance while the delay continues in the background.
  • The Dynamic Buffer allows athletes to extend buffer time and adjust video feedback to their needs.
  • Streaming playback to a TV screen benefits players who can learn from each other.
  • Replay View lets coaches annotate and save videos for later analysis.

Yes, the Video Delay Instant Replay app is available on the App Store for iOS devices and Google Play for Android devices. However, iOS and Android apps have different features. Most of the features described on this website apply to the iOS version of the app. For details on the Android app feature list, please check out the description on Google Play.

You can record your training sessions using the video delay app. Recording in DELAY mode starts when you hit the record button and captures one video file. Recording in SLO-MO mode* captures each slow-motion replay as a separate video. Videos are saved to your device’s Photos or Documents folder. You can select where to save the recordings in the app settings.

*Works only on iOS devices

 

You can connect your device to an external monitor or TV to provide more precise feedback during training sessions. This benefits coaches who want to display instant replay to multiple athletes simultaneously or when working out in a larger sports facility. To share the screen on iOS devices, use AirPlay or HDMI cable.

You can connect two iOS devices with the installed VDIR app. One device, let’s say an iPhone, can work as a camera capturing your actions. The other, let’s say an iPad, can receive the camera feed and work as a remote control for the app.

Note: Currently, the Remote feature is available only in DELAY mode.

The app’s Replay View, available on iOS devices, allows for accurate movement analysis. You can watch your actions in slow motion or frame-by-frame and measure angles to check your technique. You can also precisely select a crucial part of your actions using A & B markers and save it for further assessment.

Motion Detector works only with DELAY mode. First, enable the Grid button and select the number of rows and columns in the app’s settings. Grid lines detect movement in the video—you can use them as reference points for the ball or your pose. Each time your hand or the ball aligns with the detector, the line turns red. You can position the lines and adjust their sensitivity by entering the edit mode.



The app is versatile and can be used by individual athletes or sports teams for various activities, like golf, tennis, swimming, baseball, volleyball, and hockey. It’s recommended for assessment when working out alone and for training sessions with a coach, including weightlifting, martial arts, pilates, yoga, and physiotherapy. Coaches can also utilize it to analyze team drills in sports like soccer, basketball, cricket, and water polo. Gyms and sports facilities for gymnastics training or dance practice can also benefit from a video delay system.

No. When using the app for delayed video feedback without recording, the camera frames are temporarily stored in the device’s RAM and continuously refreshed. The buffer memory is cleared every time you exit the app. 

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