This app is designed for delayed playback (chase playback) and form checking in various sports. It also functions as a time shift camera. The app allows you to delay and play back, preview, and save video from the camera for 1 to 120 seconds. Preview is a function that allows you to rewind and play back if you want to see it again after it has been played. Save is a function that allows you to save the video rewound in the preview as an mp4.

The app is effective for form checking in bouldering, slacklining, golf swing form, other sports, dance, and training. It also has a 1/10x and 1/2x slow playback function, which is ideal for checking swing form and dance details. In addition, it also has a still image saving function, loop display function on the preview screen, and loop display time specification function.

The app is useful in various situations, including golf swing form check, tennis, bouldering/slacklining, fencing, form check for strength training, judo/kendo/kyudo, baseball/soccer/volleyball/basketball (other sports), boxing, dance practice (checking choreography, etc.), yoga/pilates/darts, checking one's own back view for fashion coordination, etc., and observing children and cats.

It can also be used more effectively by mirroring the Android screen to a TV or mobile display using Miracast-compatible devices such as Chromecast and Amazon Fire TV. The app can only be launched by those who have purchased the item when WiFi is not connected. Recommended memory is 4GB or more. It will work with 3GB, but there is a possibility that the delay time will be shorter.