Schedule local notification iOS Objective-C

I want to show local notification to user who are achieve there goals without smoking for period of time. 20 min, 12 hour, 24 hour, 1 Week, 4 week, 2 months, 5 months, 1 year, 5 year, 10 year, 20 year. Each goal time period should send different message. example "20 min - task completed" next "12 hours task completed" ....... "20 Year task completed" Notification should work in background, foreground mode. Use latest LocalNotification i.e., UNMutableNotificationContent UNNotificationRequest. Still have any question on this small task let me know? Budget is in between 600 - 800INR.