Source-backed analysis9
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.
9 reference sourcesInformation updated Nov 10, 2026
How we review
AI Hay Review
Vietnamese Q&A AI app focused on homework help, photo questions and cited answers
By AppDuo Editorial Team · Updated
- Web
- iOS
- Android
- API
On this page
Decide at a glance
Our verdict
AI Hay suits students who want step-by-step homework help and Q&A in Vietnamese, with Pro at 99,000 VND/month. The trade-offs are an unnamed underlying model, mostly promotional coverage, and a homepage privacy link that leads to a copyright page, leaving data handling unclear.
Best for: Students who want step-by-step solutions and can ask by photographing a question
Skip it if: Anyone who needs to know the underlying model, data location and training use, as the company does not publish them
Pros
- Web, iOS and Android; photo questions and cited answers per the App Store description
- High store ratings: 4.7/5 on the Vietnam App Store and 4.6/5 on Google Play
- Pro priced in VND: 99,000/month or 990,000/year
Cons
- The underlying AI model is not named
- No standalone privacy policy: the homepage link opens a DMCA copyright page
All pros and cons · Who is it for?
Pros
- Many tools on the homepage: homework help, essay writing, slides, image generation, flashcards and mind maps
Cons
- No published free-tier question count, and side sections such as AI Tâm linh (spirituality) make the app sprawling
- Download and monthly-question figures come mostly from promotional articles without independent sourcing
Best for
- People wanting a free Vietnamese-language Q&A app with news and a community feed
Skip it if
- People needing coding tools or advanced agent features
Problems it solves
Experience & key features
What AI Hay is
AI Hay is a Q&A AI app from AI HAY Joint Stock Company, launched in June 2024 according to Thương hiệu & Công luận. Its info page lists a company address in District 7, Ho Chi Minh City. It runs on the web, iOS and Android; the Google Play package name (com.hay1.tintuc) and older reviews show the listing was a news app before it became an AI product.
Features
The App Store description lists step-by-step homework help, image recognition, chat with multiple personas and cited answers. The homepage adds an AI assistant, essay writing, slides, image generation, quiz flashcards, mind maps, AIHay Drive, an AI Tâm linh (spirituality) section and persona assistants for nutrition, sales copy and translation. There is also aggregated news and a Hỏi hay community section; CellphoneS mentions horoscope readings and daily gold prices.
Pricing
The app is free, and users who run out of questions can earn points through tasks. On the Vietnam App Store Pro costs 99,000 VND/month or 990,000 VND/year, with Stars bundles from 5,000 to 30,000 VND. According to CellphoneS, its S-Student and S-Teacher members could get six months of Pro free (capped at 999 questions a day) by activating it between 18 April and 30 June 2025.
More analysis
Compared with alternatives
AI Hay targets students and general users, so it concentrates on homework help and quick Q&A. Those wanting a general chatbot, coding or deeper cited search can look at ChatGPT, Gemini or DeepSeek, and Photomath focuses on maths. They differ in price and data policy, so compare directly before choosing.
Screenshots
Plans & pricing
Prices last verified Nov 10, 2026
Miễn phí
PersonalFree
Free with a limited number of questions. When the quota runs out you can earn points through in-app tasks or buy Stars: 300 Stars for 5,000 VND, 900 Stars for 10,000 VND, 3,000 Stars for 30,000 VND (Vietnam App Store prices).
Pro
Personal₫99,000/mo/user
₫82,500/mo billed yearly
99,000 VND/month or 990,000 VND/year (about 82,500 VND/month). Per the App Store description: unlimited homework help, search and Q&A, newer AI models, advanced search and reasoning, and file attachments up to 10 MB.
- Free plan limits
- A CellphoneS article (updated 5 May 2025) says the app is free and users who run out of questions can spend points earned from tasks; no daily question count is published for the free tier.
- Free trial
- No free trial
Cancellation & refunds
No AI Hay refund policy was found in this research. Purchases via the App Store or Google Play follow that store's refund rules.
Privacy
The "Privacy Policy" link on AI Hay's homepage opens a copyright policy (a DMCA complaint procedure), so this research found no standalone privacy document. The terms of use (updated 1 June 2024) say the app collects usage data such as device ID, clicks and reading behaviour, stored anonymously to improve the app, and that users aged 14 to under 16 need parental or guardian consent. On Google Play the developer declares no data sharing with third parties, collection of phone number and contacts, encryption in transit and a way to request deletion. Nothing found states where data is stored, how long it is kept or whether user questions are used to train AI. The app info page lists social network license no. 165/GP-BTTTT issued on 26 June 2024; that is legal registration, not a data-handling commitment.
AI Hay alternatives
7.5/10Gemini
Google's AI assistant, tied into Gmail, Drive, Android and Google storage plans
7.5/10ChatGPT
OpenAI's flagship AI assistant for writing, research, coding, images and voice
Frequently asked questions
Is AI Hay free?
Yes, with a limited number of questions; when it runs out you can earn points via tasks or buy Stars. Pro on the Vietnam App Store is 99,000 VND/month or 990,000 VND/year.
Which platforms does AI Hay run on?
The ai-hay.vn website, iOS and Android.
Does AI Hay cite its sources?
The App Store and Google Play descriptions say every answer includes citations. That is the vendor's description, so important facts still need checking.
Which AI model does AI Hay use?
The official info page does not name the model, so this research cannot confirm it.
Does AI Hay have a privacy policy?
The homepage "Privacy Policy" link currently opens a copyright policy. The terms of use include a section on usage data, and Google Play shows the developer's data safety declaration.
Review evidence & sources9
Scores
- Ease of use
- 7.6
- Features
- 6.8
- Value for money
- 7.2
- Performance
- 6.4
- Support
- 6.0
- Privacy & security
- 4.5
Why this score
Questions can be typed or photographed and the Vietnamese homepage groups tools in a clear menu, though there are many assistants and side sections.
Why this score
Homework help, essay writing, slides, image generation, flashcards, persona assistants and a Q&A community, plus AI Hay Platform for API access. No agents, coding tools or external integrations were found.
Why this score
A usable free tier; Pro at 99,000 VND/month or 990,000 VND/year is modest next to typical USD-priced international plans. Free limits are not published.
Why this score
No independent benchmark of answer quality was found; the evidence is 4.6–4.7/5 store ratings and the vendor's own description. The Google Play package name (com.hay1.tintuc) and 2022 reviews praising news coverage show that score also spans the app's earlier life as a news reader.
Why this score
The info page lists a hotline (028.54.117.680) and [email protected]; no help center or support chat was found.
Why this score
No standalone privacy policy (the link leads to a copyright page); the terms only cover anonymous usage data, and Google Play declares no third-party sharing and a deletion option. Nothing covers storage location, retention or AI training. The low score reflects missing information, not a finding of wrongdoing.
What users say
- App Store (Vietnam)4.7/5 · 125,647
- Google Play4.6/5 · 209,000
Sources
- Vendor-providedOfficial homepageNov 10, 2026
- Vendor-providedOfficial app info pageNov 10, 2026
- Vendor-providedOfficial terms of useNov 10, 2026
- Vendor-providedOfficial copyright policy (linked as privacy policy)Nov 10, 2026
- storeApp Store listing (Vietnam)Nov 10, 2026
- storeGoogle Play listingNov 10, 2026
- storeGoogle Play data safetyNov 10, 2026
- pressCellphoneS Sforum: AI Hay là gìNov 10, 2026
- pressThương hiệu & Công luận (5/10/2025)Nov 10, 2026
Specs & compatibility
- Developer
- AI Hay (Công ty cổ phần AI HAY)
- Headquarters
- Vietnam
- Launched
- 2024
- Category
- AI
Capabilities
- AI features
- Mobile app
- Public API
Platforms
- Web
- iOS
- Android
- API
Interface languages
- Vietnamese
- English
Support
- Phone
Change history
- Update.Thương hiệu & Công luận reported AI Hay won Technology Product Creating Trends at the Better Choice Awards.
- Update.CellphoneS offered S-Student and S-Teacher members six months of AI Hay Pro (activation from 18 April to 30 June 2025).
- Company.AI Hay was issued social network license no. 165/GP-BTTTT.
Full change history (4)
- Launch.Thương hiệu & Công luận reports AI Hay launched in June 2024.
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