Maybe the first Mono sporting app :-)

ChronoJump is an open hardware, free software, multiplatform complete system

for measurement, management and statistics of sport short-time tests.

Chronojump uses a contact platform and/or photocells, and also a chronometer printed circuit designed ad-hoc in order to obtain precise and trustworthy measurements.

Chronojump is used by trainers, teachers and students.

https://bugzilla.redhat.com/show_bug.cgi?id=524707

Reviewers are welcome :-)