Jam Timer 4 Roller Derby app analytics for March 25

Features include: * Keep track of period, jam, and timeout times * App will automatically keep track of the number of jams and the timeouts taken by both teams. * Audio / visual / vibrate reminder when 10 seconds of the jam /period / timeout are remaining * Option to hold overtime jams at the end of a bout. * Team names can be customised * Timer background can be customized. Add your League's logo, team photo, or any image you like. * Preferences allow you to customize period, timeout, interval and jam time, reminder tone and/or vibrate, and to prevent accidental closure of the timer when pressing the back key * App can prevent display from dimming / timing out during use. * Remaining period time can be adjusted if necessary. * Useful for practice sessions and scrimmages. * Choose to automatically start jams or choose between starting jam or taking a timeout.