Parking.sg is a mobile app that lets you pay for short-term parking at public car parks using your phone. It replaces paper coupons and works at all coupon-based car parks. Here's how to use it:

1. Enter your vehicle number in the app

2. Select the car park where you want to park

3. Indicate how long you want to park

4. Pay using your credit or debit card

5. Start parking. You can also choose to end your session early or extend your parking session remotely via the app.

Note that if you're parking at a car park with the Electronic Parking System (EPS), you don't need to use the Parking.sg app.