From the home screen of Parking App you can:
You can quickly add the streets/blocks at which you park by selecting rules matching the restrictions posted. Once added, the list of zones on your home screen will show you which streets are okay to park on, which aren't, and which soon won't be.
You can leave a reminder to yourself where your car is parked simply by taping a zone from your list or entering a text or photo note in the 'Location Hint' area at the bottom of the home screen.
Notifications (with sound and vibration) for the end of a meter timer and when a zone you're parked in enters it's warning period are available when the app is open (even when the screen is locked).