CalendarAlarmHelper (net.DailyTimer.CalendarAlarmHelperFree) on Google Play
*When you update, you need to launch this app to start service again.Have you ever wondered why alarm (notification) of calendar fires very short time so can be easily missed it? This application comes to rescue by helping alarm function of calendar. It makes alarm of calendar much better.-This app works only for Google calendar.-This free version will never expire. You do not need to purchase paid version, and paid version will no longer be updated. Please use this free and supported version.