App or User friendly format for Kindle

I have been struggling to use betfair on my kindle, as I can only access a web based version, but last night briefly I had a different, possibly a mobile version come up without me doing anything... this version was so much more user friendly! Does anyone know where I can access this version, or can post a link to an app if one is available? The mobile version download page asks for a phone number, and of course a Kindle doesn't have one...