It means people no longer have to send an SMS or use coins to feed the meter.
People can top up their account on the app, choose the vehicle and category of parking space (standard or premium) and the required number of hours. Standard parking is Dh2 an hour.
Fees are deducted immediately from the balance and the whole process takes seconds.
The move was announced on social media by the Integrated Transport Centre (ITC), which regulates parking in Abu Dhabi.
The ITC said customers who use the "ewallet" accounts can use the remaining balance by sending text messages as usual until their balance is zero and then switch to the Darb app.
Customers can top-up their balance on the app by using Mawaqif rechargeable cards.
The Darb app can also be used to pay for Abu Dhabi toll gates.