MobileVOIP is an app that uses third party VoIP service providers to make free calls. Unlike Skype, you can change provider depending on the calling rates they are offering.
When you install MobileVOIP, you must choose the VoIP service you want to use and select the destination country although not all countries are available.
MobileVOIP call costs to landlines abroad are comparable to Skype and it's multiplatform so you can call just about any device but the call quality is very variable.
Review last updated: 11/06/14
Cheap calls worldwide
Supports almost all major platforms
Easy to use
Not all countries supported for free calling
Calling rates no better than Skype
Call quality variable
Calling rates vary a lot