The move follows the launch a new-look website last month, which found the company looking for ways to market their music to clients in a more creative and attractive way.
"We wanted to be proactive and make the site as advanced as possible to make so that users can listen to music as quickly as possible," explained Warner Music UK senior director of sync Ali Johnson, who added that the changes included the ability for clients to download tracks that they liked instantly and also faster video streaming.
The app, which has been a year in development, is free to clients who are signed up to the website and will complement the new offerings on the site. Johnson added different clients had different priorities when it came to searching for music - with broadcasters more interested in searching for most current releases than a song which would complement a specific brief.
"The site and the app is all about complementing the creative pitch and getting a client to consider our music for a particular project," he added. "It's about putting the power in the hand of the client and the feedback so far has been fantastic."