Here are the features according the blog post:
- Use your iPhone to make calls on your home-phone or office-phone service through your PhoneGnome account
- Make International calls at cheap PhoneGnome rates - or even free!
- Check your PhoneGnome voicemail directly on your iPhone
- Have all your PhoneGnome Contacts conveniently and automatically on your iPhone
- Place calls to VOIP and IM users without hacking your iPhone
On your iPhone you just browse to http://m.phonegnome.com/iphone on your mobile Safari browser and then dial the number you want to call. The interface also lets you select a name in your PhoneGnome contacts and click on the number you want to call.