Is the application you want only available for iPhone or Android phones? Request it for Windows Phone too by voting for the request, or adding if it it's new.
Is the application you want only available for the Windows Desktop, the iPad or Android tablets? Request it for the Windows Store too by voting for the request, or adding if it it's new.
While many companies have official requests by their users to build a Windows Phone or Windows Store app, it can be difficult to find these requests. In some cases, there are even multiple requests (sometimes with conflicting responses) which makes it difficult to know what to expect. Still other companies don't even have a place for you to make a request. The appRequests sites solve these problems and give you a simple place to go in order to find app requests, vote for requests, and check the status of those requests. It also gives companies a central place they can go to measure the demand for their app on the Windows platform.
The easiest way to show the demand for a Windows Phone or Windows Store app is to vote! The request forums are simple and you don't even need to log in to vote! You get 10 votes. Spend them however you like. Once an app request has been completed or otherwise permanently closed, you get your votes back. If you don't see a request for the app you're looking for you can add it just as easily.