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Viber vs KakaoTalk: catalog facts
Viber	KakaoTalk
Free Free to download and use for messages and calls.	Free Free to use for messaging and calls.
Android	Windows
Voice and video calls plus group chats Chats sync between mobile and desktop	Free messaging plus voice and video calls Chat folders and editable sent messages
Proprietary and centrally run Communities and stickers add clutter for people who only want chat	Official information is mostly in Korean Includes social and short-form video features beyond plain messaging
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Proprietary
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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