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LINE vs Viber: catalog facts
LINE	Viber
Free Messages and voice and video calls are free.	Free Free to download and use for messages and calls.
Android, iOS	Android
Free messaging and voice and video calls Widely used in several Asian countries	Voice and video calls plus group chats Chats sync between mobile and desktop
Closed source, centrally run service Mostly useful where contacts already use it	Proprietary and centrally run Communities and stickers add clutter for people who only want chat
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
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 September 23, 2026

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