Compare software

WhatsApp vs Viber: catalog facts
WhatsApp	Viber
Free Free to use for personal messaging and calls.	Free Free to download and use for messages and calls.
Windows, macOS, Android, iOS, Web	Android
End-to-end encrypted messages and calls Available on phones, desktop and the web	Voice and video calls plus group chats Chats sync between mobile and desktop
Proprietary and tied to a phone number account Relies on a central service run by the developer	Proprietary and centrally run Communities and stickers add clutter for people who only want chat
Downloadable app, Web application	Downloadable app
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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