I built a cheesy cross platform app a few years ago: http://jessehouse.com/blog/2010/06/01/pomodoro-timer-application/ http://jessehouse.com/blog/2010/06/01/pom

I built a cheesy cross platform app a few years ago: http://jessehouse.com/blog/2010/06/01/pomodoro-timer-application/ http://jessehouse.com/blog/2010/06/01/pomodoro-timer-applica... not sure if it qualifies as "a good mac app"