Success of mobile VOIP application Viber has shown how popular free app-to-app VOIP calling can be, and how wonderful it will be if you get a weekly top-up for 100 minutes free international talktime added to this already awesome offering. New, mobile VOIP service maaii is offering exactly this to give there service the initial popularity push, an attractive 100 minutes free maaiiout minutes talktime every week to make free international calls to non-maaii landline and cellphone users from your iOS and Android devices.

It's official now Skype for iPhone is now announced at CTIA 2009 and will be available for download in iTunes App Store from tomorrow, Skype for iPhone will let users call other Skype users for free while landlines calls will be charged as per existing Skype rates, unluckily you won't be able to use 3G or cellular data channel for VOIP and will need an active Wi-Fi signal to make use of the service, however chatting will remain functional without the need of Wi-fi over your cellular network.

This is some very good news for iPod Touch users as they can now make calls using an earphone with embedded microphone bridging the phone functionality gap between the iPhone and iPod Touch to some extent.