Blink focuses on privacy and security with features like self-destructing messages and is open-source, while Signal offers a more user-friendly experience with a wider range of privacy features and cross-platform support.
Signal
Pros:
End-to-end encryption
User-friendly interface
Wide range of privacy features
Voice and video calling
Cross-platform support
Cons:
Requires phone number for registration
Limited customization options
Some features may require a stable internet connection