fing is a free iPhone app that allows you to use IM chat technology for free phone calls. fring is a mobile internet & community portel to be used with your social network sites, IM chat software and VoIP services like Skype.
The concept is leveraging your network connection from your iPhone to use the on-line chat and VoIP services you traditionally use with your PC or Mac.
Use fring to check and see who’s on-line. Use fring to call those you see on-line.
Beyond fring’s social appeal, it also saves money letting you make affordable local and international calls to landline and regular cellular numbers using your SkypeOut/SkypeIn account or almost any internet voice service (SIP) such as SIPNET, EuteliaVoIP, VoIPVoIP and VoIPTalk, even from non-SIP enabled handsets.
What’s more, fring does all the work for you, automatically logging you into your favorite WiFi hotspots so you save time and hassle without having to configure your WiFi access points each time.