• A proposed class-action lawsuit claims that DoorDash charges iPhone users more than Android owners.

• DoorDash uses higher delivery charges and an "expanded range" fee to do it, the suit alleges.

• "The claims put forward in the amended complaint are baseless and simply without merit," a DoorDash spokesperson said.

If you've ever noticed inconsistencies in how DoorDash charges fees, a lawsuit recently filed against the delivery service might help explain why.

A proposed class-action suit claims that the delivery service tacks on extra fees to orders placed through iPhones compared to otherwise identical orders from users with Android smartphones. The suit also alleges that customers who use DashPass, the company's $9.99-a-month service, are charged an extra fee on each order, which eats away at the savings that they get from the subscription.

"The claims put forward in the amended complaint are baseless and simply without merit," a DoorDash spokesperson told Insider. "We ensure fees are disclosed throughout the customer experience, including on each restaurant storepage and before checkout. Building this trust is essential, and it's why the majority of delivery orders on our platform are placed by return customers. We will continue to strive to make our platform work even better for customers, and will vigorously fight these allegations."

The lawsuit, which is seeking class-action status, was filed by Ross Hecox, a single father in Maryland who uses DoorDash and subscribes to DashPass. Also named in the complaint are Hecox's two children, Reid and a minor listed as "R.E.H.," both of whom have used DoorDash in the past.

The lawsuit's key claim concerns the "expanded range fee." The charge isn't defined on a list of fees for customers on DoorDash's website. Customers and Dashers have debated the reason for the fee, which is applied to some orders with delivery addresses near the pickup location and doesn't appear to be passed on to delivery workers.