2. I formerly had an Android device (even though I have had a MacBook since 2009 – weird, I know). After switching this summer, I quickly realized the power of iPhone “Reminders.” Each time a reminder is due, your iPhone buzzes and displays a pop-up. You can snooze it or mark as completed. In addition, you can set up recurring reminders, which are perfect for remembering to mail estimated quarterly tax payments, renewing subscriptions, running payroll and other things you tend to forget.