[App_rpt-users] Iphone app?

Anyone know if there is an Iphone app that can be used like the iaxRPT tool? If not, I would like to setup an IAX inbound account that I can just dial in and access via *99 / # PTT or even VOX. I know one can dial in through the allstarlink interface, but I am looking to use my local resources ( Asterisk PBX) to make it non long distance and much easier to get in. Any thought would be appreciated. Lu KA4EPS