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Zalo vs WeChat: catalog facts
Zalo	WeChat
Free Free to download and use for messaging and calls.	Free Free to download and use.
Windows, macOS, Android, iOS	Windows, macOS, Android, iOS
Widely used in Vietnam, so most contacts there already have it Messaging and calling in one app	Very large user base, especially in China Chat, calls, social feed and payments in one app
Official site is mostly in Vietnamese Closed source, run on the developer's servers	Closed source and run by a single company Many features go beyond messaging, which makes the app large
Downloadable app, Hosted service	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
Not stated if it works offline	Not stated if it works offline
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.