How should I count the number of launches of an application in iPhone

Question

• I have completed my application.
• Now when user launches my application 5 times

• I want to display an alert message that "You have used more than 5 times better to go for next version".

• How should we count the number of launches and where do we call this alert view?

Answer 1

use NSUserDefaults in applicationDidBecomeActive:.

NSUserDefaults * userDefaults = [NSUserDefaults standardUserDefaults];
        NSInteger appLaunchAmounts = [userDefaults integerForKey:@"LaunchAmounts"];
        if (appLaunchAmounts == 5)
        {
           //Use AlertView


        }
        [userDefaults setInteger:appLaunchAmounts+1 forKey:@"LaunchAmounts"];