Do Date: New iPhone date calculator app uses the lock screen and notification center for daily reminders.

Do Date is a general date calculator and and daily reminder app that uses the iPhone notification center and lock screen to provide daily notifications of important upcoming events.

Once you enter events and dates in the app, you will receive reminders every day in your lock screen telling you the event name and how many days are left before the date arrives. For example, your daily reminder may say “Jack’s 5th birthday is 8 days away.”

Do Date is available on the App Store for $0.99.