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Viber vs VK Messenger: catalog facts
Viber	VK Messenger
Free Free to download and use for messages and calls.	Free Free to use; the app is proprietary.
Android	Linux, Web
Voice and video calls plus group chats Chats sync between mobile and desktop	Audio and video calls alongside messaging Transcription of voice and video messages
Proprietary and centrally run Communities and stickers add clutter for people who only want chat	Proprietary and tied to a VK account Mainly useful if your contacts are on VK
Downloadable app	Downloadable app, Web application
Closed source	Closed source
License not stated	License: Proprietary
Not stated if an account is needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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