App: Photo finish app
Developer: IURII VOEVODIN
Genres: Sport, Dienst­programme

The photo-finish technique allows measuring the finish time of any race event with high accuracy and getting a picture to determine the winner with high precision.

Photo-finish allows you to measure finish time with 0.004s precision, determine the winner of the race, and save a picture to prove the winner and result.

The app made a series of slit photos of the finish line. Each photo frame has a timestamp with a precise time. When on the frame you see that the finish line is crossed it means that the timestamp of a specific frame defines the finish time.

Instruction. 
The application combines features of the stopwatch and camera.
1. Point a camera at the finish line. The finish line should be inside the frame borders 
2. Start the stopwatch at the race start. 
3. When the winner approaches the finish line, start recording. 
4. When the athlete has crossed the finish line – stop recording. 
5. Find the frame when the winner crosses the finish line. The timestamp at the cursor line shows the precise result.

Direction. The application uses the slit-photo technique. It combines a series of frames to the resulting image in chronological order. The scale at the top of the resulting image shows an approximate timeline.
Depending on how the winner approaches the finish line it is more comfortable to combine frames in “left to right” or “right to left" order. For example, if the camera is located inside of the stadium track - then the direction should be "right to left". If outside, then "left to right".

Frame width. This setting depends on the distance between the camera and the track and the athlete's speed. If the camera is too close or the winner is too fast, then it can cross the frame sector too fast to get a clear image. Thus it is better to increase the image width. From another point, the size of the resulting image is limited. If the frame is too wide then you will have less time to record the winner result.

Precision. The estimated measurement precision is about 0.004s. It depends mainly on the camera frame rate. iPhone camera support 240fps. 1:240 = 0.0041ms.

Subscription rules
1. A free trial period of 14 days is available for new users only.
2. Payment will be charged to iTunes Account at confirmation of purchase.
3. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.
4. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal.
5. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase.
6. No cancellation of the current subscription is allowed during the active subscription period
7. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication.

Please read the:
1. Privacy Policy https://photo-finish.app/contacts/privacy-policy/
2. Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Release notes:
The new copy-paste function is available for stopwatch start time. 
It allows us to measure the precise time between two events.
For example.
1. Record the start event.
2. Record the finish event.
3. Select the frame with the start event (for example the starting gunshot).
4. Copy the timestamp of this frame into the clipboard.
5. Paste this timestamp as the stopwatch start or recalculate the finish image using the new start moment.