When comparing Tox vs FaceTime, the Slant community recommends Tox for most people. In the question“What are the best video chat services for teams?” Tox is ranked 4th while FaceTime is ranked 13th. The most important reason people chose Tox is:
Tox uses military grade encryption and works completely peer-to-peer.
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Pros
Pro Privacy focused
Tox uses military grade encryption and works completely peer-to-peer.
Pro Free and open source
The code is licensed under GPL (may change in the future) and is available on GitHub.
Pro Multiple front-ends for multiple platforms available
At the moment there is no official Tox client, but a selection of 32 and 64 clients for Windows, OS X, Linux and Android is available.
Pro Easy to use
To make a FaceTime call, click the icon in the contacts.
Pro Already part of your iOS device
FaceTime is already integrated in your iOS device. No need to install or set it up. It can be accessed from contacts on iPhone or as a separate app on all iOS devices.
Pro Group chats
Easy to initiate from iOS/OSX messages with a group.
Cons
Con Early stages of development
Since Tox is relatively new, it has important features missing (like group video) and requires a proper code review before it can be deemed reliable and ready for everyday use.
Con Apple users only
No applications for Windows, Linux or Android are available.