Google Calendar - Spend less time managing your day & more time enjoying it
iMazing - iMazing lets you transfer music, files, messages, apps and more from any iPhone, iPad, or iPod to a computer, Mac or PC. Manage and backup your iOS device simply without iTunes. (was DiskAid)
CalenGoo - Features | 1.0.175 for Android™
i-FunBox - General file management software for iPhone and other Apple products
Annual View - Annual View displays and manages calendar events within a year view.
iExplorer - iExplorer lets you easily transfer music, playlists, text messages, files and more from any iPhone, iPod, or iPad to a Mac or Windows computer and iTunes.