how to detect daily first launch in iOS?

Question

we can detect first Launch of our app using NSUserdefaults. But is there any way to detect daily first launch in iOS ? I need to show a popup daily one at a time.

Answer 1

Thank you guys! got an easy solution. Thanks for the support

  let today = NSDate().formatted 
    if (NSUserDefaults.standardUserDefaults().stringForKey(Constants.FIRSTLAUNCH) == today)
    {
         //Already Launched today
    }
    else
    {
         //Today's First Launch
        NSUserDefaults.standardUserDefaults().setValue(today, forKey:Constants.FIRSTLAUNCH)
    }

extension NSDate {
var formatted: String {
    let formatter = NSDateFormatter()
    formatter.dateFormat = "MM/dd/yyyy"
    return  formatter.stringFromDate(self)
}