Sorta Works ... but then ..
On my 3GS the application looked pretty good at first and worked for the first couple of con calls I had. All the calls I need to join require the # key to be pressed after the access code. It is possible to add this for each call using the options, but that is hard to do in hands free mode. The application stopped working after a few days by always dialing the incorrect access code and I had to join manually, which defeats the whole purpose. My issue was not the echo back issue identified on the support page, because I was using a bluetooth headset.
kickboy99 about
ApptDialer, v2.7