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Zalo vs Messenger: which to use for everyday chat in Vietnam?

By Official AppDuo editorial team · Updated

Zalo logoZalo6.3/10Freemium · FreeMessenger logoMessenger7.1/10Free · Free

Quick verdict

Both apps are free for personal messaging and calls, so the practical question is where the people you need to reach are, and whether encryption, a desktop app or surprise costs matter more to you.

Zalo: hard to avoid if you deal with class groups, colleagues, shops and government agencies in Vietnam. VNG reported 79.2 million monthly active users in Q3 2025, and Tuoi Tre counted more than 17,000 Official Accounts run by government agencies and public-service providers by end-2024. It has Zalo PC for Windows and macOS plus a web version. On the other hand, its terms do not mention encryption, its current end-to-end encryption status could not be confirmed, its store ratings are low (2.0/5 on the Vietnamese App Store), free accounts have been capped since 2022 according to VietTimes, and Tuoi Tre reported that verification codes became a paid service in 2025.

Messenger: suits people whose friends are already on Facebook. Personal messages and calls are end-to-end encrypted by default, store ratings are high (4.5/5 on the Vietnamese App Store) and nothing is mandatory to pay for. On the other hand, the app carries ads, its App Store privacy label lists a very long set of data types linked to you, the desktop apps ended on 15 Dec 2025, and Meta announced it would shut messenger.com.

Head-to-head

Zalo leads on 4, Messenger on 4, 2 even

FeatureZaloMessenger
Reach in Vietnam[9],[17],[18]79.2 million monthly active users in Q3 2025 and about 2.1 billion messages a day (per VNG); more than 17,000 Official Accounts run by government agencies and public-service providers by end-2024.The sources reviewed give no Messenger user count for Vietnam. The Vietnamese App Store listing has more than 4.66 million ratings, and Google Play shows 5B+ downloads.
→ Many class and work groups, plus more than 17,000 government and public-service accounts, sit on Zalo, so people in Vietnam often end up installing it even if they already use Messenger.
Account and how you find people[1],[13],[16],[21]You register with a phone number and add or find people by phone number.You sign in with a Facebook account and need no phone number; QR codes add people in person. Without a Facebook account you are limited to the mobile app.
→ Contacts who only know each other's phone numbers connect faster on Zalo; people who are already Facebook friends find their list ready in Messenger.
Cost for personal use[7],[16]Messaging and calls between personal accounts are free. Per VietTimes, from 1 Aug 2022 free accounts were capped at 1,000 friends and 40 new stranger conversations a month; Zalo's own pages have not re-confirmed these figures.Free, with no mandatory paid plan and no friend cap recorded in the sources. The app shows ads; the only in-app purchases are avatar items at $0.99–$10.99 on the US App Store.
→ Anyone who often messages strangers, such as sellers or recruiters, can hit Zalo's free-account caps; the sources show no comparable cap on Messenger.
Paying for verification codes[8],[19]Per Tuoi Tre (28 Feb 2025), getting a verification code to register, recover a password or switch devices means texting a Zalo number (1,000–5,000 ₫ per message) or calling a hotline (1,000 ₫ per minute), Vietnamese prices as reported. The paper described the fee as sparking debate among users.The sources reviewed record no charge for codes. Trustpilot reviewers do, however, complain about login trouble, verification codes and the PIN for restoring encrypted chats.
→ The amounts are small, but they land exactly when you lose or change a phone and need back into your Zalo account.
End-to-end encryption[2],[3],[4],[12],[15]The terms do not mention encryption. Zalo published an E2EE whitepaper in June 2022 and press guides described enabling it for one-to-one chats, but the help-centre front page does not mention E2EE, so its current status could not be confirmed.Personal messages and calls have been end-to-end encrypted by default since December 2023 (built on the Signal Protocol and Meta's Labyrinth protocol). Meta can still see messages that are reported or shared with it, and chats with business accounts or Meta AI and channel content are not classed as personal messages.
→ Messenger's default scope is stated by the vendor; with Zalo you have to check inside the app, because current official documents do not say.
Personal data and consent[2],[10],[12],[16]VNG is the data controller; it collects phone number, contacts (with permission), GPS location, device details and payment information (with consent), and says it does not store message or call content. A VietNamNet commentary (1 Jan 2026) criticised a late-2025 notice requiring consent to a broader data policy within 45 days, bundling ads, data sharing and AI training.Meta says it does not use personal message content to personalise ads. But the App Store label lists a very long set of data types linked to you (location, contacts, browsing history, financial, health, sensitive info), some used for third-party advertising, and the app falls under Meta's wider policy.
→ Both collect plenty beyond message content; Zalo drew criticism for how it sought consent, while Messenger sits inside Meta's ad system.
Using it on a computer[1],[13],[20],[21]Zalo PC for Windows and macOS plus a web version, alongside the iOS and Android apps.The Windows and Mac apps ended on 15 Dec 2025. Meta announced messenger.com would shut in April 2026 in favour of facebook.com/messages (the messenger.com homepage still showed a login form on 10 Nov 2026).
→ If you chat for work at a desk all day, Zalo is more convenient; on a computer, Messenger now goes through Facebook.
Channels for businesses and agencies[7],[9],[12],[16]Official Accounts for messaging followers and the Zalo Notification Service for alerts. Per VietTimes in 2022, OA packages were Trial at 10,000 ₫, Advanced at 59,000 ₫ and Premium at 399,000 ₫ a month (Vietnamese prices); they may have changed.Business accounts, communities and creator broadcast channels exist, but the sources reviewed give no business pricing. Messages with business accounts are not among the personal messages encrypted by default.
→ In Vietnam, notices from shops, schools and public services often arrive through Zalo OAs; these are business packages, not a cost for individual users.
User ratings[5],[6],[16],[17],[18],[19],[22]2.0/5 on the Vietnamese App Store (more than 367,000 ratings), 2.1/5 on the US App Store (8,570) and 2.3/5 on Google Play (about 2.57 million).4.5/5 on the Vietnamese App Store (more than 4.66 million ratings) and 4.7/5 on the US App Store and Google Play. Trustpilot shows only 1.4/5 from 365 reviews (small sample, unclaimed profile).
→ On the same Vietnamese App Store, 2.0 versus 4.5 is a wide gap; the sources do not pin down why users rate Zalo low.
Getting help[3],[14],[19]A help centre, [email protected] and [email protected], and the hotline 1900 633 155 (2,000 ₫ per minute); no live chat with staff was found.The Messenger Help Center and a Meta AI support assistant; no route to a human agent was found. Trustpilot reviewers say abuse reports were dismissed and accounts are hard to recover.
→ If you get locked out, Zalo at least has a phone line and email addresses; for Messenger the sources only show self-service channels.

Choose Zalo if…

  • People who need to join class or work groups, reach shops or receive notices from government agencies in Vietnam
  • People who chat a lot from a computer and want a dedicated Windows or macOS app
  • Shops and businesses that want an Official Account and customer notification messages
  • People who want a hotline and email for support, even with the hotline at 2,000 ₫ a minute

Choose Messenger if…

  • Facebook users who want to message and group-call friends without needing a phone number
  • Anyone who wants personal messages and calls end-to-end encrypted by default, with disappearing messages
  • People who would rather avoid friend caps and paid verification codes
  • People with many contacts abroad who want a wide choice of interface languages (29 on the App Store)

Which app your contacts are on

With a messaging app, features matter less than who else uses it. In Vietnam Zalo has concrete scale figures: VNG reported 79.2 million monthly active users in Q3 2025 and about 2.1 billion messages a day, and Tuoi Tre reports more than 17,000 Official Accounts run by government agencies and public-service providers by end-2024. Class groups, work groups and notices from schools or shops often come through it, and Zalo finds people by phone number.

Messenger works differently: you sign in with Facebook, no phone number is needed and your friends list is already there. No Vietnam-specific Messenger user count appears in the sources; the closest figure is the 4.66 million-plus ratings on the Vietnamese App Store. Messenger's App Store listing also shows 29 interface languages, against Vietnamese and English for Zalo. That is why many people keep both: Zalo for life in Vietnam, Messenger for Facebook friends.

Free, with conditions

Both are free for personal messaging, voice and video calls, so there is no personal paid plan to set side by side. The difference is in the conditions. Per VietTimes, from 1 Aug 2022 free Zalo accounts were capped at 1,000 friends, 40 appearances a month in strangers' phone-number searches and 40 new stranger conversations a month; Zalo's own pages have not re-confirmed these numbers. In Feb 2025 Tuoi Tre reported that users must pay 1,000–5,000 ₫ per text or 1,000 ₫ per minute on a hotline to get verification codes for sign-up, password recovery or a device change, a fee the paper said sparked debate.

Messenger has no mandatory charge; on the US App Store the only purchases are avatar items at $0.99–$10.99, and the app shows ads. Zalo's Official Account packages (per VietTimes in 2022: 10,000 ₫, 59,000 ₫ and 399,000 ₫ a month, Vietnamese prices) are business products, not a cost for individual users.

Encryption and personal data

This is where the two apps differ most. Messenger's privacy page says personal messages and calls are end-to-end encrypted by default and Meta cannot read them, unless someone in the chat reports or shares messages with Meta. Chats with business accounts, with Meta AI and content in channels fall outside that scope. The flip side is Messenger's App Store label, which lists a very long set of data types linked to you, including health and sensitive info, some of it used for third-party advertising.

Zalo's terms, updated 28 Aug 2026, do not mention encryption. Zalo published an E2EE whitepaper in June 2022, but the help-centre front page does not mention E2EE, so its current status could not be confirmed. VNG says it does not store message or call content and that personalised ads require consent. On 1 Jan 2026 a VietNamNet commentary by an author from Hoa Binh University criticised a late-2025 notice that told users to accept an expanded data policy within 45 days or lose access.

Desktop, support and ratings

Zalo offers Zalo PC for Windows and macOS plus a web version, which suits people who chat for work at a desk all day. Messenger has gone the other way: Meta ended the Windows and Mac apps on 15 Dec 2025 and announced messenger.com would shut in April 2026 in favour of facebook.com/messages, although the messenger.com homepage still showed a login form on 10 Nov 2026. Without a Facebook account, Messenger is phone-only.

For support, Zalo has email and the hotline 1900 633 155 at 2,000 ₫ a minute; Messenger has a help center and a Meta AI assistant, with no route to a human agent found. Store ratings lean heavily towards Messenger: 4.5/5 against 2.0/5 on the Vietnamese App Store. Trustpilot is the exception, with Messenger at 1.4/5 from 365 reviews, mostly about login lockouts, delivery glitches and spam (a small sample on an unclaimed profile).

Frequently asked questions

Is Messenger more secure than Zalo?

On encryption, Messenger is clearer: personal messages and calls have been end-to-end encrypted by default since December 2023. Zalo's terms do not mention encryption and its current E2EE status could not be confirmed. Still, Messenger's App Store label lists many data types linked to you, so encrypted messages do not mean less data collection overall.

Which is cheaper, Zalo or Messenger?

Personal messaging and calls are free on both. Zalo can cost you something when you need a verification code (1,000–5,000 ₫ per text or 1,000 ₫ per minute by phone, per Tuoi Tre in 2025). Messenger has no mandatory charge, sells only avatar items at $0.99–$10.99 on the US App Store and shows ads.

Is Zalo better than Messenger on a computer?

Zalo is easier, with Zalo PC for Windows and macOS and a web version. Messenger's Windows and Mac apps ended on 15 Dec 2025 and Meta announced messenger.com would move to facebook.com/messages, so on a computer you will need a Facebook account.

Can I use only Messenger and skip Zalo in Vietnam?

Yes, if everyone you need to reach is on Messenger. But Zalo has 79.2 million monthly active users (Q3 2025) and more than 17,000 government and public-service Official Accounts (end-2024), so many class groups, work groups and public-service notices run through Zalo, and skipping it can mean missing them.

Sources

Numbers in the table refer to these sources, read on the dates shown.

  1. 1.Official homepage (zalo.me) · Vendor-provided · Nov 10, 2026
  2. 2.Official terms of use and personal data notice · Vendor-provided · Nov 10, 2026
  3. 3.Official help centre · Vendor-provided · Nov 10, 2026
  4. 4.Official E2EE whitepaper (PDF, June 2022) · Vendor-provided · Nov 10, 2026
  5. 5.App Store listing (Vietnam) · store · Nov 10, 2026
  6. 6.Google Play listing (United States) · store · Nov 10, 2026
  7. 7.VietTimes (2022-08-01): restricted features and OA packages · press · Nov 10, 2026
  8. 8.Tuoi Tre News (2025-02-28): verification-code fee · press · Nov 10, 2026
  9. 9.Tuoi Tre News (2025-12-29): Zalo and VNG's business · press · Nov 10, 2026
  10. 10.VietNamNet (2026-01-01): 45-day data consent notice · press · Nov 10, 2026
  11. 11.Wikipedia: Zalo · Community-reported · Nov 10, 2026
  12. 12.Messenger privacy and encryption page · Vendor-provided · Nov 10, 2026
  13. 13.Messenger website (landing page) · Vendor-provided · Nov 10, 2026
  14. 14.Messenger Help Center · Vendor-provided · Nov 10, 2026
  15. 15.Meta announcement: default end-to-end encryption on Messenger (2023-12-06) · Vendor-provided · Nov 10, 2026
  16. 16.App Store listing (United States) · store · Nov 10, 2026
  17. 17.App Store listing (Vietnam, via iTunes Lookup API) · store · Nov 10, 2026
  18. 18.Google Play listing (United States) · store · Nov 10, 2026
  19. 19.Trustpilot: messenger.com · review-site · Nov 10, 2026
  20. 20.TechCrunch: Messenger desktop app is no more (2025-12-15) · press · Nov 10, 2026
  21. 21.TechCrunch: Meta is shutting down Messenger's standalone website (2026-02-19) · press · Nov 10, 2026
  22. 22.App Store listing (United States) · store · Nov 10, 2026

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