Talkatone Makes Free Google Voice/Gmail VoIP Calls on Your iPhone

iOS only: Gmail users can make free Google Voice calls, but why should they have all the fun? Talkatone sets up free VoIP calls, over 3G or Wi-Fi, from your iPhone, iPod, or iPad through Google Voice for free.

Talkatone does quite a few other neat things with your Gmail account and free voice-over-IP technology, but the main reason it's exciting is a feature that's somewhat tucked away. Double-tap on the Contacts header, and you'll get an option to make a Google Voice VoIP call. Choose a contact or dial a number, and you're calling. If it doesn't work on your first shot, you may need to do a little Gmail-to-Talkatone setup, described at the CyberNet News blog. Otherwise, it's a remarkably simple way to make a free Gmail phone call outside of Gmail.

Talkatone is a free download for iPhone, iPod touch (second generation and later), and iPad, and requires iOS 4.0 and later.

Via lifehacker.com

Google Voice iPhone App

After almost two years of waiting, Google Voice's iPhone app has been finally approved in the App Store. It looks much better than the HTML5 web app and you can enable push notifications for voicemail and text messages.

Google Voice for iPhone doesn't beat the Android app because it doesn't integrate with the standard phone app, doesn't synchronize the inbox and doesn't offer advanced options for notifications, but that's because iOS has many limitations.

Google says that the application requires iOS 3.1 or a more recent version of Apple's mobile operating system. Google Voice is still limited to the US, but you no longer need an invitation to use it. Hopefully, Google will add support for the VoIP service from Gmail in a future update.