Cal | Calendar by Any.do for iOS

Cal | Calendar by Any.do integrates easily with your Calendar and Contacts app and lets you keep track of all those important dates, birthdays, events, and activities. If you're already using Any.do, you'll be pleased to know that this calendar app integrates well with it. It also supports social integration, which is a big plus.

You start off by logging in with an existing account or by creating a new account. You can connect to Cal using your Facebook account, which makes it easy to import friends and their birthdays, or sign up with your e-mail. For some reason this took a bit longer than we expected on iOS 7, but once the sync was compete, we were able to access our calendar and add new events. Apart from just adding an event, you can also add location, attendees, notes, and set how often you would like the event to repeat. In the Settings menu you can set the default and visible calendars, default reminders, connect with Any.do, and choose a photo theme for your days and events. During our tests Cal functioned flawlessly and navigating through the available options and settings went smoothly. We were especially thrilled about the fact that this calendar app synced with all our existing calendar services without any problems.

Cal is a very useful app if you don't like to keep all important dates and events in your head. With its unique features and social integration, it lets you keep a good balance between your work and your private life.