[FREE ANDROID APP] Roger - Walkie Talkie Style Voice Messenger - Send Unlimited Voice To Anybody in Your Contact List even to Those Who Doesn't Own the App

Today FREE Android App of the day is Roger.

What is this app about?
Roger that! Do you recall when you do hear people saying "Roger that!"? It's when they are communicating using walkie talkie. Roger is an app that does walkie talkie.
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Main Feature
With Roger, you can talk as much as you want and as long as you want for FREE.
Even though it's FREE, like other modern chit-chatting app, Roger, however, is using your data (3G/4G/WiFi) in order to work, so bear in mind your data usage.

Other Great Feature
Roger works for everyone, even for those who doesn't have the app installed yet. When people you are talking to doesn't have yet Roger installed, Roger will smartly send the voice through an SMS with a link to hear the message and to download the app.

How is it different from existing app, say WhatsApp?
All modern chit-chatting app such as WhatsApp, BlackBerry Messenger, Facebook Messenger, Line Messenger (and this list keep going on and on) all have send voice features.
The main difference Roger has with all these chit-chatting app is 1) the interface and 2) works for everyone.
1) The interface. Roger is designed with voice communication in mind and not text communication. So the interface is simply just a button to press to send the voice.
2) Works for everyone. Like I said earlier, Roger works even for people who hasn't installedRoger yet, while other apps above, require the user to installed the app to begin chit-chatting.

Works Offline too!
Roger even works offline. To note that works here means Roger will keep whatever you are sending and/or receiving until you are back online. Once you are back online, Roger will start sending those voice messages and start receiving voice messages for you.

The Verdict
Roger, with all the great features mentioned above: free, works for everyone, simple walkie talkie interface and works offline, is making a must-installed app for everyone especially if you like more to talk than to text.