The phrase "a handy application" is correct and usable in written English.
It can be used to describe an application that is convenient, useful, or easy to use.
Example: "This app is a handy application for managing your daily tasks and reminders."
Alternatives: "a useful tool" or "a convenient app".
It's a very handy application that gives you eight tracks to create your beats.
Overall, Schmap for iPhone/iPod Touch is an incredibly handy application, especially while traveling or getting to know a new area.
Burley Griffin posted his winning design for Canberra from Chicago, using the Australian government's handy application kit (consisting of a set of panoramic oil paintings of the site, a fact sheet on its climate and geology, 12 pages of instructions and two contour maps on which to sketch a proposal).
A pair of Twitter vets today launched a handy mobile application called OneShot that makes it easier to share screenshots of text to Twitter, along with your comment and a link to the page in question.
Genoom offers a handy Facebook application, allowing users to access their family tree and communicate with family, all while logged into their Facebook account.
A pair of Twitter vets today launched a handy mobile application called OneShot that makes it easier to share screenshots of text to Twitter, along with your comment and a link to the page in question.
Hopper, the makers of a handy travel application that tells you the best time to fly in order to find the best deals, has now raised additional capital to continue to grow its business.
A handy iPhone application called Eventblimp is launching today on the iTunes App Store to help you better discover all the different types of local events and activities happening around you.
New York-based Folio is the online marketplace of choice for designers and creative professionals, and also features a handy desktop application.
