1) It worked with VoiceOver.
2) It worked when wearing a Bluetooth headset (I have to let it dial with the iPhone set to speakerphone and then switch to Bluetooth once its finished dialing or the phonecard access fails).
3) It dialed a little quicker (the numbers/tones seem to hold on longer than necessary and the pauses between them are long).
4) It used GPS to determine which access number to dial! (I regularly travel between Canadian cities and often forget to switch access numbers so I hear "Please hold while we complete your long distance call...")
Add those features and it would be worth three times as much! But a great app at the current price. I use it all the time. It saves me a ton of cash!
wrightrusaitis about Calling Card, v1.9