I downloaded an app but it won't appear on my home screen?

I downloaded viewa for my iPhone and It says it is already installed in the app store

This is normal and often happens. Simply turn the device off and back on a few times until it appears. Or turn it off wait about an hour and turn it back on. Or get it on itunes to put to your ipod. Hope i helped out.

If you have an iPhone that is giving you trouble installing an application (app), then there are two ways to fix this issue. One reason that apps may not be installing is because you device is running low on memory and you need to reset the device before installing a new app. The other reason may be because there was an error when the app was downloading into your device, to fix this you have to rest the installation process.

See the link here: http://www.ehow.com/...phone.html