Can't resist a fire sale? This website and app has one every day on everything from laptops and 1000-thread-count sheets to outdoor heaters and running shoes. The app provides notification when a new deal is posted (at noon) and a timer at the top of the screen lets users know how long they have left to buy each deal.
Free; iPhone, iPad, Android, Windows Phone, BlackBerry
The deals-based service that started it all is still going strong, despite the recent rise in the number of competitors. Dozens of deals, including goods, services and experiences, are available every day, with discounts of up to 90 per cent. The app uses location-based technology and can be used to find deals in more than 500 cities around the world.
Free; iPhone, iPad, Android
LivingSocial is Groupon's biggest competitor and the same sorts of deals - often the same deals - can be found on both sites (although one usually runs a deal before the other). LivingSocial's advantage is that if you buy the deal and share it with three other friends who also buy it (easily accomplished using the share buttons within the app), your deal becomes free.
Spreets offers a couple of dozen deals every day on the same things covered by Groupon and LivingSocial. The app has several nice features, such as the ability to set up alerts before vouchers expire. Overall, however, the app is slow to navigate and poorly designed - the service is better on a web browser.
Free; iPhone, Android
Scoopon is owned by the same people behind CatchOfTheDay and is run on similar lines, offering one new deal every day at noon. The difference is Scoopon concentrates solely on services and experiences. While there is technically only one new deal offered every day, dozens of other ''side deals'' are made available for users to take advantage of at any time.