Source-backed analysis8
Review basis
Research-based review: the AppDuo Editorial Team compiled it from official pages, documentation, app stores, press and user feedback, without hands-on testing. Every claim links to a source with the date it was checked.
8 reference sourcesInformation updated Nov 11, 2026
How we review
Viblo Review
Free Vietnamese-language community for sharing programming knowledge
By AppDuo Editorial Team · Updated
- Web
- iOS
- Android
On this page
Decide at a glance
Our verdict
Viblo suits developers who want to read and write technical posts in Vietnamese, with free coding practice, interview and CV services alongside. The trade-offs are a mostly Vietnamese-speaking audience, a mobile app rated 3.7/5 on Google Play, and dated public scale figures.
Best for: Developers who want technical tutorials in Vietnamese
Skip it if: Readers who need a large global English-language Q&A community
Pros
- Free; Viblo describes itself as a technical knowledge-sharing service
- Posts, Q&A, series and videos, plus Viblo Code, CTF, CV, Learning, Interview and Battle
- Users keep ownership of their posts under the Terms
Cons
- The Terms let Viblo use posted content for any purpose, royalty-free, and the right survives account termination
- The mobile app is rated 3.7/5 on Google Play (20 reviews); the Vietnam App Store has only 3 ratings
All pros and cons · Who is it for?
More pros
- Interface in Vietnamese and English; posts can be written in Vietnamese, English or Japanese
More cons
- The latest public scale figures date from October 2018; the homepage gives no total user count
Best for
- People building a public profile through posts and Q&A
- IT students practising coding and preparing for interviews
Skip it if
- Teams needing published business plans, SLAs or formal support
Experience & key features
Viblo (viblo.asia, originally Vietnam IT Blog) is a platform where developers write and read technical posts. According to Viblo's About page, the project started in October 2014 and officially launched on 3 April 2015. Its Terms name Sun* Inc. as the provider.
The homepage lists posts, Q&A, discussions, series, videos, authors, organizations and tags. The ecosystem also includes Viblo Code, CTF, CV, Learning, Battle, Partner and Viblo Interview, announced as the eighth service on Viblo's 8th anniversary. Posts can be written in Vietnamese, English or Japanese.
Viblo describes itself as free and publishes no pricing. The Terms allow ads. Users keep ownership of their posts but grant the company broad, royalty-free usage rights that stay in effect after the account is terminated. The Android app currently averages 3.7/5 from 20 Google Play reviews.
Compared with Stack Overflow, Viblo is smaller but Vietnamese-language and bundles coding practice, interview and CV services. The latest public scale figures we found are from October 2018 (20,937 active users, 1.1 million page views per month), so they do not reflect its current size.
Screenshots
Plans & pricing
Prices last verified Nov 11, 2026
Miễn phí
PersonalFree
Reading, writing posts, Q&A and the main services are free; Viblo's FAQ page describes it as a "Free service for technical knowledge sharing".
- Free plan limits
- The official site and Terms state no storage or post limits. The Terms allow Viblo to show ads, including third-party ads.
- Free trial
- No free trial
Cancellation & refunds
There is no paid plan, so no refund policy applies.
Privacy
The Terms (Articles 6, 10, 16) say Viblo collects as little information as possible, uses cookies for anonymous usage data, and lets users view, edit or request deletion of personal data; edit requests are handled within 72 hours, and deletion has listed exceptions. Registration data that does not identify the user may be used freely or shown to third parties. Users keep ownership of their posts but grant Viblo broad usage rights that continue after account termination. On Google Play the developer declares no data shared with third parties, possible collection of messages and app performance data, encryption in transit and the option to request deletion.
Viblo alternatives
Controversies & incidents
Issues documented by the press, regulators, courts or the vendor itself. Every item is sourced; unproven claims are labelled as allegations. Last researched: Nov 11, 2026
No significant controversies or incidents found in the sources we checked.
Frequently asked questions
Is Viblo free?
Yes. Viblo describes itself as a free service for technical knowledge sharing and lists no paid plans. The Terms allow ads.
Who runs Viblo?
The Terms name Sun* Inc. as the provider. The 8th-anniversary announcement says Viblo Platform will always be non-profit and names Trần Đức Thắng as its founder and product owner.
Do I keep rights to my posts?
Yes, Article 17 says users hold ownership. The company, however, may use the content for any purpose, royalty-free, and that right continues after account termination.
Does Viblo support Vietnamese and English?
The interface is available in Vietnamese and English. Per the official FAQ, posts can be written in Vietnamese, English or Japanese.
Review evidence & sources8
Scores
- Ease of use
- 7.5
- Features
- 7.5
- Value for money
- 8.5
- Performance
- 6.0
- Support
- 6.0
- Privacy & security
- 6.0
Why this score
Bilingual Vietnamese/English interface, Android and iOS apps, posts organised clearly by series and tags. Fewer interface languages than global platforms.
Why this score
Beyond blog and Q&A it offers Viblo Code, CTF, CV, Learning, Interview, Battle and Partner. Broad, but aimed mainly at the Vietnamese IT community.
Why this score
Free with no paid plan; the trade-off is that the Terms allow ads, including third-party ones.
Why this score
No independent speed or uptime data; the footer links to a status page at status.viblo.asia. The Android app averages only 3.7/5 from 20 Google Play reviews, which pulls the score down.
Why this score
Help pages, an FAQ and a footer feedback form exist; the site publishes no support email or phone number.
Why this score
The Terms promise minimal collection and allow edit and deletion requests, but also let the company freely use or show non-identifying registration data to third parties and claim very broad content rights. No reported data breach found.
What users say
- Google Play3.7/5 · 20
- App Store (Vietnam)4.7/5 · 3
Sources
- Vendor-providedViblo homepageNov 11, 2026
- Vendor-providedViblo About page (timeline and 2018 statistics)Nov 11, 2026
- Vendor-providedViblo FAQNov 11, 2026
- Vendor-providedViblo 8 years anniversary announcementNov 11, 2026
- Vendor-providedViblo Terms of Use (Vietnamese)Nov 11, 2026
- storeGoogle Play listingNov 11, 2026
- storeApp Store listing (Vietnam)Nov 11, 2026
- pressTạp chí Công Thương (2017-12-01)Nov 11, 2026
Specs & compatibility
- Developer
- Sun* Inc.
- Headquarters
- Vietnam
- Launched
- 2015
- Category
- CommunityDevelopment
Capabilities
- Real-time collaboration
- Mobile app
- Integrations
Platforms
- Web
- iOS
- Android
Interface languages
- Vietnamese
- English
Integrations
- GitHub
- Chrome Extension
Support
- Help center
- Community forum
Change history
- Update.Reached 1 million page views per month.
- Feature.Android and iOS apps launched.
- Feature.Question & Answer feature launched.
Full change history (6)
- Feature.Viblo Version 2 replaced the old version.
- Launch.Viblo officially launched.
- Launch.The Viblo (Vietnam IT Blog) project started.
About the author
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