There are many apps meant for almost everything. But the most popular apps are those that allow one to make free calls. With the development of Wi-Fi and internet connections, people are able to make calls without necessarily using direct cellular lines.
The main advantage of these VoIP calls (through the internet) is the lower call rates. Other than that, you can make calls when the cellular reception is kind of non existence or poor. So, if you are looking to lower your cost of calling, then consider these 9 iPhone apps which let you make free calls.

Nimbuzz

This App is used by more than 50 million people across the world. It has managed to establish itself across all mobile platforms. Meaning, it can be used by all Smartphone users and not just iPhone alone. Its user interface is very convenient; something that other competitors lack. To make it even better, the user interface is customizable. Although it is used to be integrated with Skype, that is no longer possible. But it is still one of the best IM apps.

NetTalk
This is a very unique iPhone app. As other apps it lets you to call other users with the same app, NetTalk allows you to call all landlines for free. Except that the free landline calls are restricted only in US and Canada. Its setup is pretty much easy, and the quality of calls is excellent. You can also import phonebook.

Fring
Just like Skype; it operates on its own network. This was after Skype terminated its integration with Fring. Fring has consistently released various versions, both on iOS and Android. It has a new innovation where you can make a 4 way video chat. Fring also allows you to make international calls using its feature Fring Out.

Tango
This is another iPhone that allows you to make free calls, especially video calls. It is probably the only app that allows video calls. Although the app is a little bit buggy, it has greatly improved since its first release.

TalkBox
This is one app that has gained so much popularity in the last few months. More and more people are joining the service. It has various features that work almost like a voice SMS. That is, you can actually press a button to call your friends! It works perfect with no flaws since most users have very little or no complains. It has other features like conversation history, one click photo-transfer and group chat.

Viber
It is integrated with the phonebook on your phone. You don’t even need to open an account or sign up. The quality of calls is superior.

iCall
It has more than 4 million users. It allows you to make US and Canada calls over the 3G and Wi-Fi. With this app, you don’t need cell phone signals to make the calls. To make it better, roaming minutes are free too.

Vonage
It is a household name in the US for VoIP services. It provides cheap but quality calls, both locally and globally. It uses your existing phonebook. It is easy since it avoids usernames and codes.

Freephoo
Just like the other apps; it lets you make free calls. It also allows the capability of making calls for LinkedIn and Facebook users. You only need one account for any kind of device.

Although there are other apps, these are the top 9 iPhone apps which let you to make free calls.

About the Author: Sara Marie  loves to write about various aspects of Technology. She is evangelist at Concorde Communications. They provide best call center and answering service.