Here is a really cool and possibly very handy iphone app Photo Finish - sprintTimer, a unique timer and photo finish app that employs the same techniques as the professional equipment used in Track and Field, though it can be used for other sports too such as horse racing, greyhound racing, cycling, speed skating, car racing, rowing, plus much more.

sprint timer phone appAll you need to do is start the timer and point the camera towards the finish line. Then sprintTimer will build an image of narrow slices of the finish line, each representing 0.03 s in time. You can then scroll along the photo to get the time at which each competitor crosses the finish line with a 0.01 s resolution.

Note: Only works on the modern iPhones and devices due to the high requirements on camera, memory and processing capacity.

Find it on the USA App Store: SprintTimer - Photo Finish - by Sten Kaiser

Also by the same developer is the FitnessMeter fitness assessment app and the speed clock radar app.