AI Hay
Education AIUpdated October 27, 2026
Vietnamese AI answer engine and homework helper that solves photographed problems step by step, drafts essays and cites local sources.
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What is AI Hay?
AI Hay is a Vietnamese-language AI answer engine and homework helper made by AI Hay Joint Stock Company in Ho Chi Minh City. You type, dictate or photograph a question, and it returns a cited answer, a step-by-step solution or an essay draft written in natural Vietnamese and tuned to local schoolwork, exams and news. Around that core sit a translator, a summarizer for files and links, a mind-map maker, a university admissions calculator and hundreds of AI chat characters. The problem it targets is local: global chatbots often stumble on Vietnamese literature prompts, national exam rules and admissions data, and AI Hay is built around exactly those questions. The weak spots are a daily Stars quota that runs dry on long sessions, user reports of garbled math notation, and a website that works only in Vietnamese. Pick it if you study, teach or work in Vietnam.
How to start using AI Hay?
Open ai-hay.vn in a browser or install the “AI Hay - Smart Local AI” app from the App Store or Google Play; the iPhone version needs iOS 15.5 or later. The website is in Vietnamese, while the app stores list English and Vietnamese as supported languages. You can create an account with Google, and students who choose a school email ending in edu through the edu.ai-hay.vn page get one month of Pro free. An account keeps your question history, files and daily Stars balance in one place.
Next, give it a real assignment, because homework is where the product is strongest. Open the homework tool, snap a photo of a worksheet or paste the problem, and choose between a quick solve that checks your answer and the “Hiểu sâu” (deep understanding) mode that walks through the method. The homework page says it can take several questions or a whole test at once. For essays, switch to the writing tool, which builds outlines, drafts texts and analyzes literary works across genres and styles.
The answer screen is where you decide how much help you want. A solution display setting lets you follow the reasoning line by line instead of reading only the final result, and answers come with cited sources you can open. From the same input box you can attach a PDF, Word or Excel file under 10MB for a summary or translation, or use the microphone button for voice input. Every question costs Stars, and harder questions cost more, so watch your balance on the account page.
Finally, check the result before you hand anything in. Open the cited sources, compare each step with your textbook, and ask again if the math notation comes out scrambled, a problem several App Store reviewers raised this year. You can export answers as a PDF. If you post a question to the community feed, the terms of service say your content stays private until you set it to public, and only moderated public posts are distributed.
Who is it for?
Vietnamese high school students
Math, physics and literature homework arrives every evening, and the national exam looms at the end of grade 12. AI Hay reads a photographed problem and lays out the method step by step, and the writing tool drafts essay outlines in Vietnamese. You get the reasoning in your own language instead of translating an English chatbot’s answer.
University applicants
Choosing schools means juggling admission scores, cut-off marks and preference lists across dozens of Vietnamese universities. The college predictor calculates your admission score, looks up cut-offs and estimates your chances, and topic pages collect questions about schools from Hanoi to Can Tho. Your shortlist rests on numbers rather than rumors.
Parents helping with homework
The curriculum has changed since you were at school, and a geometry proof or a literature analysis can leave you stuck. AI Hay gives you a worked solution to read before you sit down with your child. You explain the method with confidence instead of guessing.
Office workers and civil servants
Regulations and policy documents change often, and you need the current version in Vietnamese. Tuoi Tre reports that the company targets exactly this use, and answers link to their sources. You can check a rule against the original text before acting on it.
Teachers
Lesson materials, formal emails and reports eat into evenings. Preset assistants write polite work emails, summarize documents and build mind maps from a chapter. You still edit the output, but the blank page disappears.
Small sellers on Facebook and Zalo
Writing product posts and captions every day gets tedious. Preset assistants turn raw product details into sales copy and trend-aware captions in everyday Vietnamese. You publish faster, though you should still adjust the tone to your shop.
AI Hay pricing
Usage runs on Stars, an internal unit charged for every question, with complex questions costing more. The free plan refills your Stars each day, Pro raises the daily allowance tenfold, and you can top up with Stars packs. In a reply on Google Play, the developer also says free users can earn extra Stars daily by posting in the community (60 Stars, up to three times) and watching ads (30 Stars, up to 20 times). On the website, Pro is priced in Vietnamese dong behind a countdown discount banner, so the dollar figures below come from the US App Store in-app purchase list.
300 Stars a day, the standard AI model, 50MB of AI Hay Drive storage and standard personalization. The app shows advertising. One Google Play reviewer says a homework problem costs about 60 Stars, which means roughly five solved problems a day.
3,000 Stars a day, newer and stronger AI models, faster handling of Excel files and large tasks, 1GB of AI Hay Drive storage and advanced personalization. The store listing also mentions higher accuracy and advanced search and reasoning.
The same Pro features billed once, which comes in below twelve monthly payments of $2.99.
The US App Store lists packs of 300, 900 and 3,000 Stars at that price, handy if you only hit the cap during exam weeks.
Sign in through edu.ai-hay.vn with a student email to get Pro without paying.
AI Hay key features
Photo homework solver: You snap or upload a problem, pick a quick solve to check an answer or “Hiểu sâu” to learn the method, and get numbered steps with formatted math. The homework page says it handles several questions or a full test in one request. You come away knowing the procedure, not just a final number.
Cited answers with a local focus: Every response includes citations, according to the app store listings, and the student landing page promotes continuously updated, transparent sources for topics such as new exam regulations. You can click through to the original before relying on an answer. That matters most for policy, legal and admissions questions.
Vietnamese writing assistant: The writing tool creates outlines, drafts essays and analyzes literary works in a range of genres and language styles. App Store reviewers single it out for argumentative and expository essays.
Summarize, translate and map: You upload a PDF, Word or Excel file under 10MB, paste a link or a video, and ask for a summary, a translation into Vietnamese or another language, or a mind map. A data extraction option pulls fields from a file into a table. Long reading lists turn into study notes in minutes.
University admissions calculator: The college predictor calculates admission scores, looks up exam results and cut-off marks, and estimates your chances for each preference. Topic pages gather popular questions about individual Vietnamese universities. Admission season’s spreadsheets become a quick lookup.
AI characters and community: A discover hub offers hundreds of Vietnamese AI characters and K-pop idol bots, plus preset assistants for career guidance, email writing, poetry, nutrition and translation. A community feed surfaces trending questions from other users.
AI Hay Drive and export: Uploaded documents live in AI Hay Drive, with 50MB on Free and 1GB on Pro, and answers can be exported as PDF. Keeping course files in one place lets you ask follow-up questions without uploading again. It is a small but practical piece of the study workflow.
AI Hay Pros & Cons
Pros
AI Hay is one of the few assistants built for Vietnamese students rather than translated for them. Answers use local curriculum language, cite their sources and cover admissions rules, exam updates and literature prompts that global chatbots often handle poorly. The free plan covers light daily homework, and Pro costs a fraction of global AI subscriptions. Photo solving, essay outlines, translation, summaries and admissions lookups sit in one app, so you are not juggling five tools. Ratings of 4.6 to 4.7 on Google Play, from around 200,000 reviews, show real traction. Start with the homework and writing tools, where users report the most value.
Cons
The Stars system is the main friction: harder questions cost more, the free 300 reset daily, and reviewers regularly complain they run out mid-assignment or get pushed toward Pro. Several App Store reviews from early 2026 describe math answers full of garbled symbols, slow replies and misread photos, and some users still rate ChatGPT higher for difficult high school work. Outside Vietnam the value drops fast, because the website is Vietnamese-only and the knowledge base leans local. The privacy policy also covers collecting national ID card details for account verification, precise location with consent and pasted clipboard text. Keep personal data out of prompts and recheck math notation before you submit.
Use AI Hay if you want…
- Solve Vietnamese homework from a photo, step by step.
- Draft essay outlines and literary analysis in Vietnamese.
- Check new exam rules against cited, current sources.
- Estimate university admission chances from your exam scores.
- Summarize PDF, Word and Excel files into study notes.
- Translate images, documents and websites into Vietnamese.
- Turn a textbook chapter into a clear mind map.
- Write Facebook and Zalo sales posts in natural Vietnamese.
AI Hay alternatives
PhotomathRead review →
EdubrainRead review →
ChatGPTRead review →
Google GeminiRead review →
Microsoft CopilotRead review →
AnswersAiRead review →AI Hay Reviews
Students on the Vietnamese App Store praise the detailed, accurate solutions and essay help, and one says the tutor-style explanations lifted their grade, though many add that the daily Stars run out too fast.
A Google Play reviewer worked out that 300 free Stars cover only about five homework problems a day and asked for a bigger allowance, while others complain the app nudges them to upgrade to Pro after a short session.
Several early-2026 App Store reviews report math and geometry answers cluttered with code-like symbols that are hard to read, along with slow replies and lost questions after pressing send.
Some users say it skips part of a photographed problem or drifts off topic when asked to redo it, and compare it unfavorably with ChatGPT for harder high school assignments.
Fans like that it answers Vietnam-specific questions accurately and still installs on older iPhones that newer AI apps no longer support.
FAQ
Is AI Hay free to use?
Yes. Free accounts get 300 Stars a day that refill daily, which covers light homework use. Pro raises the allowance to 3,000 Stars and adds stronger models for $2.99/month or $29.99/year on the US App Store.
What are Stars in AI Hay?
Stars are the unit AI Hay charges for each question, and more complex questions cost more. Your allowance resets every day, and you can buy extra packs or earn some by posting in the community and watching ads.
Does AI Hay work in English?
The website is Vietnamese-only, while the mobile apps list English and Vietnamese. The translation tool handles other languages, but the curriculum knowledge and sources focus on Vietnam.
Can students get AI Hay Pro for free?
Yes. Students who sign in through edu.ai-hay.vn with a Google account tied to a school email ending in edu get one month of Pro at no cost.
Is AI Hay available outside Vietnam?
The app is listed on the US App Store and Google Play, so you can install it abroad. The content, sources and support are built for Vietnamese users, so expect less value elsewhere.
How does AI Hay handle my data?
The privacy policy lists device IDs, email, optional phone number, ID card details for verification, location with consent and your question history, with analytics through Firebase and Google Analytics. You can request deletion by emailing the company, and it commits to acting within 30 days.
Is AI Hay suitable for children?
The privacy policy says the service is not meant for anyone under 13. The terms of service require a parent or guardian’s consent and supervision for users aged 14 and 15.
How do I cancel AI Hay Pro?
Subscriptions bought in the iOS or Android app are billed by Apple or Google, so you cancel them in your store account’s subscription settings. For purchases made on the website, contact support at info@aihay.vn.
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