You can turn your smart phone into the ultimate push to talk walkie-talkie with TiKL. Setting up and using the Tikl service is very easy. You can instantly talk or text to one or a group of friends at once with the touch of a button. There is no requirement of any setup, you can use this service with your phone contacts or as Facebook friends. TiKL turns your phone into the ultimate Push To Talk (PTT) Walkie Talkie with instant messenger capability.
I could not found the Tikl website, but they have their Facebook Page and the application is available in Android Market and iPhone App Store. You can download Tikl application for free from Android and iPhone Marketplace.
Some of the features of this Tikl app :
* Free, instant real-time one-on-one voice push-to-talk calls.
* Free, instant real-time group voice push-to-talk calls.
* Free, lightning fast one-on-one chat (instant text messaging) with delivery confirmation.
* Free, lightning fast group chat (instant group text messaging) with individual delivery confirmation.
* Uses data connection only. No voice minutes or SMS used for TiKL calls or chats.
* Works across Android phones/tablets and iPhone/iPad/iPod Touch.
* Works across carriers.
* Works over WiFi, 3G, 4G, EDGE and GPRS.
* Supports both phone contacts and Facebook friends.
The good thing about this Tikl app is that it is almost instant over 3G, if the other person is also online. Another good feature is that your friend just needs to be connected with internet, you just ping him up, the app opens for them to continue in a conversation with you.
Just check this video for more details about Tilk : Download Tikl for free. Its a great app : Touch to Talk or Push to Talk for Android iPhone mobiles.