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Signal vs VK Messenger: catalog facts
Signal	VK Messenger
Free Free; developed by a nonprofit funded by grants and donations	Free Free to use; the app is proprietary.
Android, iOS, Windows, macOS, Linux	Linux, Web
End-to-end encryption on every message and call using the open source Signal Protocol No ads, affiliate marketers or tracking	Audio and video calls alongside messaging Transcription of voice and video messages
Requires a phone number that can receive an SMS or phone call to register Desktop app requires Signal to be installed on a phone first	Proprietary and tied to a VK account Mainly useful if your contacts are on VK
Downloadable app	Downloadable app, Web application
Open source	Closed source
License: AGPL-3.0	License: Proprietary
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.