ExxonMobil Tuesday announced that its Speedpass-plus mobile app is now compatible with fuel pumps at 6,000 Exxon- and Mobil-branded retail stations across the U.S.

The app uses cloud-based technology to allow a customer to authorize a pump for payment. The customer has the option to select Apple Pay as a default form of payment from within the app, according to a press release.

The Speedpass-plus mobile payment app is available as a free download, and also can be linked to checking accounts or other major credit and debit cards and ExxonMobil cards.

In addition, customers can obtain receipts by email, at the pump, or both. With either option, the customer's purchase history is recorded in the app for easy reference, according to the announcement.

ExxonMobil plans to expand the app's availability to more than 8,000 branded locations by midyear.