JUST EAT lets you find takeaway restaurants in the UK, view their menu, and order food to your home.
The app, like its web counterpart, has a simple design: it displays restaurants that are close to your postal code after which you can select food off their menus.
Afterwards, you can pay and order through your JustEat account. Each restaurant also has user reviews which are especially handy if the restaurant tends to run late.
Bugs have been reported on some devices, but I had no problems.