Denny’s today announced its new “Denny’s on Demand” service that lets customers order online and through its mobile apps for both takeout and delivery. To go along with the restaurant chain’s launch of the service, the company has released a completed revamped mobile app that introduces functionality for ordering for iPhone users.

The ordering features for takeout are available at all Denny’s locations, while the new delivery service is available at select locations for now as the company continues to roll that service out.

In addition to the ordering through the app and online, Denny’s is introducing the ability to order via Twitter DM’s and soon Facebook:

The new Denny’s on Demand service is available now online and in the updated Denny’s app for iPhone, version 4.0.0, on the App Store.

Click. Eat. Repeat. Get the New! Denny’s On Demand app for iOS. Denny’s On Demand New! Online Ordering is here! Get all your diner favorites. Whatever, whenever, and now, wherever.