FriendCaller for iPhone - 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
EasyCallBack for iPhone - EasyCallBack allows you to make cheap international calls via 3G or WiFi from your mobile phone. Simply download the app, create an account, add some credit and start enjoying low-cost calls.
Calling someone is very easy. Start by entering the number you wish to dial. EasyCallBack will call you back and then will connect you to your destination
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
Media5-fone Pro for iPhone - The Media5-fone is a softphone application for iPhone, iPod Touch and iPad. It is a SIP Client which enables users to make and receive VoIP calls. VoIP calls are calls established over a Wi-Fi or 3G connection using the IP technology of the Media5-fone
WaZapp for iPhone - WaZapp allows you to easily send voice and text messages to your friends and family. All you need is your email address. Enter the pin number sent to your email address, and you're ready to go. No following and followers. Open WaZapp and all of your everyday friends are at your fingertips, ready to chat
Rebtel for iPhone/iPad - Make free calls to other Rebtel users and cheap calls to everyone else. Connect with WiFi, 3G or use your local minutes to make Rebtel calls.
The app is free to download and easy to use - it's just like your normal phone but with free calls and super cheap international rates. Reduce the cost of your international calls by up to 98%
Bobsled Calling for iPhone/iPad - Bobsled Calling lets you make free calls to all your friends and family. Talk to any of your Facebook friends and make unlimited calls to any phone in US, Canada, and Puerto Rico.
Bobsled is a new way to communicate, centered around your social circle. This means one-touch calls with or without phone numbers
iCall for iPhone - iCall allows you to make free phone calls to real phones and other iCall users using VoIP technology. VoIP saves you money by routing your phone call over the internet instead of the cellular network. The app also lets you chat with users of iCall, Facebook, AIM, Windows Live Messenger, ICQ, Google Talk and other XMPP enabled services
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
WeTalk - WeTalk allows you to make low-cost international phone calls with crystal clear sound quality. The app supports phone call recording and caller ID display.
· VERY VERY EASY TO USE!! Use it exactly the same way you use embedded Apple Phone app for iPhone. You can start making call just after download with auto assigned account and initial $0