Callbacker - Callbacker is an iPhone app which allows you to make cheap international calls. Simply register an account, make a deposit from your iTunes account, and you are ready to go. It's very convenient because you don't have to check your mobile account balance all the time.
Making phone calls in Callbacker is very easy:
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myDialBox for iPhone - myDialBox allows you to make phone calls worldwide with reasonable pricing plans. You receive $1 balance as a free gift to start.
myDialBox supports WiFi, 3G, and EDGE connections so you can call your family and friends from anywhere
Ooma Mobile for iPhone - Introducing Ooma Mobile, an application that lets Ooma customers make US and international calls from their iPhone, iPod touch or iPad. Phone calls made using the Ooma Mobile application are transmitted through your active Wi-Fi or 3G data connection. Simply download the application, enter your Ooma Mobile username and password (available at my.ooma
"Call Green Alert" is your direct connection to your most needed person. Just tap the Green Alert icon and you are in contact with the person who saves your life or your favorite pizza delivery service
Portable Dialer - Imagine you finished all your monthly minutes in your cellphone plan, you can take any regular phone and use this application to actually "dial" the numbers that you have stored in the application
Clear Phone Lite - Aha! Seems that you don't want to miss anything while you dial someone. Or perhaps you just want to avoid obstacles on your way.
This software is perfect for you, this application will let you dial as your regular phone and in addition it will let you see the camera view on the background of the dialer
CloudTalk Messenger is a more personal and natural way to communicate than texting alone. Send voice messages as easily as texting, without the complications and interruptions of phone calls and voice mail. Check it out -- it is completely FREE!
CloudTalk is great for group messaging with your friends, family and co-workers
TiKL for iPhone - TiKL turns your mobile phone into a push to talk walkie-talkie with instant messaging capabilities. It allows you to instantly talk or text to one or a group of friends at once with the touch of a button. No setup is required, just have them in your phone contacts.
· Free, instant real-time one-on-one voice push-to-talk calls