Do you have an iPhone, Droid / Nexus One (Andriod), Blackberry or S60 (Nokia phone)?
If so, you're in luck: RAF has partnered with Tapatalk to allow you to browse RAF Forum on your mobile device using the Tapatalk app. This is the closest thing RAF has to a mobile app.
If you used to browse RAF on your mobile phone, then you are most likely aware of RAF Mobile (m.animorphsforum.com) which took you to our slimmed down version of the forum.
Now you can use the native Tapatalk app on any of the above mobile devices.
To get the application on your device, you can simply access RAF on your mobile device and an alert will tell you how to download the Tapatalk application. From the application, just search for Richard's Animorphs Forum (or RAF) and you are on your way.