Easy to use, simple, clean.

Also animated :-)

iOS 7 support

Copy the files from the calendar group to your own project.

VRGCalendarView *calendar = [[VRGCalendarView alloc] init];
calendar.delegate=self;
[self.view addSubview:calendar];

##Delegate methods ####Selecting days Whenever a user selects a date, the following method will be called:

-(void)calendarView:(VRGCalendarView *)calendarView dateSelected:(NSDate *)date;

####Switching months This delegate method will be called whenever a user switches to the next or previous month.

-(void)calendarView:(VRGCalendarView *)calendarView switchedToMonth:(int)month targetHeight:(float)targetHeight animated:(BOOL)animated;

With the way the calendar layouts work, the number of rows (and thus the height) can vary. You can react to this change by using the targetHeight parameter.

Mark the dates of that month by sending an array with NSDate or NSNumber objects. Like so:

NSArray *dates = [NSArray arrayWithObjects:[NSNumber numberWithInt:1],[NSNumber numberWithInt:5], nil];
[calendarView markDates:dates];

Or

NSArray *date = [NSArray arrayWithObjects:[NSDate date], nil];
NSArray *color = [NSArray arrayWithObjects:[UIColor redColor],nil];
[calendarView markDates:date withColors:color];