One Calendar

★★★★★ Works perfectly with multiple calendars synced to show my work and personal schedule all together.

★★★★★ I use this because Google calendar fails to fetch new appointments/events from Outlook. But with one calendar I always have my Google and Outlook events displayed in the same widget.

★★★★★ Great App, use it to sync my work calendars and my shared family calendars all in the one place, so I can see what's going on without opening different apps all the time

★★☆☆☆ I purchased the premium license and cannot use it ony phone. It works ony laptop, and it stated it would work across android and Windows devices. I don't want to pay twice.

★★☆☆☆ Would be perfect if not for an ad covering the last week of the month that has to be opened and deleted EVERY TIME the calendar is opened. I will be uninstalling.

★★☆☆☆ I really do like this app, however, I purchased the premium option, and it seems like every few weeks the app drops my license and I lose access to the paid features. I can usually uninstall and reinstall to fix it, but that's an unnecessary hassle. The most recent time, it doesn't recognize that I've paid already and the "restore license" link in the settings doesn't work. If either have the choice to just use the free version or pay again which I am not doing.

★★☆☆☆ I tried to use this to replace the Google calendar I use to sync my Yahoo calendar but the instructions available apparently haven't been updated. The instruction in Yahoo account security no seem to work any longer with this app. I need something reliable that I can use to sync my desktop Yahoo calendar to my android smartphone. This app isn't that.