For this app to work it must be opened at least once after installation. Please don't forget to grant required calendar access permissions.
IMPORTANT: please disable any Android power optimizations for this app (it won't consume much power), it is required for reliable operation:
* Samsung users: power saving for this app should be disabled in two places: 1) Android Settings -> Battery -> App Power Saver -> Details; 2) Android Settings -> Battery -> Battery Usage -> More -> Optimize Battery Usage.
* Xiaomi/MIUI users: to disable power saving for this app, open Security app, go to Battery -> App battery saver and change background settings for this app to "No restrictions"
* Instructions for other devices would be added later
Author: Sergey Parshin
Market link: com.github.quarck.calnotify
Web site: https://github.com/quarck/CalendarNotification
Market downloads: 10,000-50,000
Market rating: 4.4 / 5.0