Mobile applications or mobile apps are applications developed for small handheld devices, such as mobile phones, smartphones, PDA’s and so on. Mobile apps can come preloaded on the handheld device as well as can be downloaded by users from app stores or the Internet.
You can find mobile apps on both feature phones and smartphones. The most popular smartphone platforms that support mobile apps are IOS,Windows Mobile, Android, Symbian, Java ME and Palm.
Mobile Application QA 