Vivox - Vivox allows you to easily keep in touch with all your friends using your iPhone or iPod touch. With it, you can make free calls and chat with contacts who also have the app installed.
Vivox can also be used to make low-cost calls to landlines and mobile phones anywhere in the world. Download and install the app to receive free calling credits
Acrobits Softphone for iPhone is a reliable and highly customizable SIP Client for iPhone. It features push notifications, multitasking, Google Voice integration, and more.
Please note that Acrobits Softphone is a SIP Client, not a VoIP service. You must have service with a VoIP provider that supports use on a standard SIP client to use it
PennyTalk Mobile (iPhone) - Make cheap calls around the world with PennyTalk Mobile. With rates as low as 1¢ a minute, you can call internationally for a fraction of what your mobile carrier might charge. There is no connection fee for calls made using the PennyTalk Mobile app
Talkatone for iPhone/iPad - Talktone is a mobile VoIP solution that complements Google Voice. You can call and text any US and Canada number for free over WiFi or 3G/4G. Talkatone doesn't use cell minutes and there are no SMS fees.
The app also lets you call and text other Talkatone users for free with better quality than other VoIP apps
FriendCaller Video Chat - Make free worldwide calls over Voice over IP or use text messages. FriendCaller to FriendCaller calls are absolutely easy and free. Just use your Facebook ID or email address to talk to all your friends instantly. There is no need to register for them
barablu - Barablu lets you make free VoIP calls to other barablu contacts using your phone's WiFi connection. You can also make low-cost calls and send cheap SMS to GSM and landline phones.
In addition, the app lets you chat with other people all over the world using popular IM services
Rynga for iPhone - Rynga allows you to make cheap calls from your mobile phone. The app uses your phone's wireless connection to place the call instead of your plan minutes, saving on costs. Calls to other Rynga users are free.
Rynga works anywhere there is a WiFi, 3G or GPRS connection available
VoipAlot for iPhone - VoipAlot allows you to make cheap calls from your mobile phone. The app uses your phone's wireless connection to place the call instead of your plan minutes, saving on costs.
VoipAlot works anywhere there is a 3G, WiFi, GPRS or Edge connection available
VoipBuster for iPhone - VoipBuster allows you to make cheap calls from your mobile phone. The app uses your phone's wireless connection to place the call instead of your plan minutes, saving on costs.
VoipBuster works anywhere there is a 3G, WiFi, GPRS or Edge connection available
VoipDiscount for iPhone - VoipDiscount allows you to make cheap calls from your mobile phone. The app uses your phone's wireless connection to place the call instead of your plan minutes, saving on costs.
VoipDiscount works anywhere there is a 3G, WiFi, GPRS or Edge connection available
