You can get information about SkyPhone - Free calls, including release, maintenance and so on.

[ iOS ] Main Changes in Version 1.5.0 are the following. Changed some User Interfaces. Improved stability and bug fixes. The Settings menu has a new, intuitive look. Update: [Version 1.5.1 Released] - Bug fixes (February 1, 2017)

[ iOS ] Main Changes in Version 1.4.9 are the following. Improved stability and bug fixes.