VSir Video Call for iPad - VSir Video Call allows you to make free video and voice calls worldwide from your iPad. The app uses your 2G, 3G, 4G or WiFi connection to put you in touch with friends and family wherever you are.
VSir Video Call gives you a phone number for receiving free calls and text messages
Bria for iPad is a SIP-based phone specifically designed for iPad that uses a Wi-Fi or 3G/4G connection to make and receive calls.
Bria facilitates easy communication with an intuitive interface that includes all of the standard phone features such as call display, call history, voicemail indicator and multiple call support
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
Voxofon for iPhone/iPad - Voxofon is a mobile app that allows you to connect with all your friends and family anywhere in the world using your iPhone, iPad or iPod touch. With it, you can make voice calls and send messages for free to any other user who has the app installed
Mobyler for iPhone - Mobyler allows you to make free calls and chat with other Mobyler users via your phone's 3G or WiFi connection. You can use the app to call all your friends and family anywhere in the world for free as long as they also have the application installed on their iPhone or Android device. You can also make cheap calls to non-Mobyler contacts
iFreeje - it’s an application for cheap international calls from iPhone which is great for tourists, people living abroad and people who need to call abroad.
Freeje application allows you to get free callbacks to Skype from iPhone outside Wi-Fi zones and to top-up using the application
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
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
GlooboVoIP for iPhone - GlooboVoIP is a service which allows you to make free calls to your registered friends (on their smartphone, PC or VoIP phone), and cheap international calls. Just download the app, register in a few seconds and then make your first free call
AVT Mobile - AVT Mobile is a convenient way to make cheap international calls. No need to memorize international numbers, or scratch cards. No need for WiFi or stable 3G. All you have to do is choose your international destination number and AVT Mobile will make a local call instead. It's that simple!
Please note that AVT Mobile is not a SIP application
