What are some alternatives?
When comparing Call Me Private and UberConference, you can also consider the following products
Grasshopper - Grasshopper enables entrepreneurs to build a virtual office that connects callers to employees, wherever they are.
GoToMeeting - GoToMeeting is a web conferencing service offering a range of services which are available on Mac, PC, iOS and Android devices.
Line2 - Line2 adds a second phone number or complete cloud business phone system to smartphones & computers that's robust yet affordable. Buy online or get a custom quote.
join.me - Instant screen sharing. Instant Aha!
YouMail - YouMail turns visual voicemail into a personal assistant for handling all your missed calls.
Zoom - Zoom unifies cloud video conferencing, simple online meetings, group messaging, and a software-based conference room solution.