Apps refuse to download.

Since being on iOS 7, I've had loads of apps that just refuse to download. I have plenty of space on my device and am running 7.0.3.

The 2 apps I want to try out are Media Player - PlayerXtreme HD and VLC Streamer Free.

When I try download either of these I get this error:

Unable to Download App.
Media Player - PlayerXtreme could not be downloaded at this time.

I've tried resetting my device, deleting the download attempt and starting again.

I can download other apps just fine.

Is anyone else having this problem?