Terms & Conditions

Last updated 10 November 2026

These terms govern your use of Vietnamese Buddy. By creating an account, subscribing or continuing to use the service, you agree to them.

1. Who we are

Vietnamese Buddy is operated by Confident Works LLC. In these terms, “we” and “us” mean that company. You can reach us at support@vietnamesebuddy.com with any question about the service, your account or your data.

Our registered address is 7901 4th St N, #32704, St Petersburg, FL 33702, United States.

2. The service

Vietnamese Buddy is a web app for learning Vietnamese, delivered in your browser at app.vietnamesebuddy.com. You add your own study material, such as class slides, exercise scans, notebook photos, PDFs, recordings and text, and the app uses automated systems, including AI models run by the providers named in our Privacy Policy, to turn it into vocabulary, flashcards, audio, corrections and practice.

Vietnamese Buddy is meant to support you as a Vietnamese learner. Its purpose is to help you improve your Vietnamese by giving you tools to organize and structure your learning, and to practice what you learn.

AI output can be wrong. Translations, grammar notes, transcriptions, corrections and generated audio can contain mistakes. Treat them as a study aid to check, not as a reference work. They are not a professional translation or professional advice. Features change as the app develops.

Apart from what is yours (section 5), the app belongs to Confident Works LLC or to those we license it from: its software and design, the lessons and word lists we provide, and the word audio and pictures that are made once and shared by all learners. We give you a personal, non-transferable right to use them for your own learning while you have an account. Please don’t copy, republish or resell them, make your own versions of them, or try to take the app’s software apart. Anything these terms don’t give you stays ours.

3. Your account

You open an account with your email address. You sign in with a link or a six-digit code sent to that address, each good for one use, and there is no password.

Anyone who can read your inbox can sign in as you, so keep it secure, and tell us if you think someone else has used your account. An account is for one person, who must be at least 16 years old and old enough to enter into a contract where they live.

4. Plans, payment and renewal

Paid plans are monthly subscriptions. What each plan includes and costs is on our pricing page, and the Free plan stays free for as long as you like.

• Subscriptions are billed in advance and renew automatically every month until you cancel. Prices shown include tax.
• Paid plans include a monthly AI allowance for uploads, audio and feedback, shown as a meter in the app. How far it goes depends on what you upload and how much you practice. When it is used up, the AI features pause until your next billing date; studying, browsing and export keep working.
• You can cancel at any time from your account or by emailing us. Canceling stops the next renewal; your plan stays on until the end of the period you have paid for.
• You can move to a bigger plan at any time; you pay the difference for the rest of the current period, and the bigger plan starts at once. A move to a smaller plan starts at your next billing date, and you keep the bigger plan, with its AI allowance, until then.
• When a paid plan ends, your account moves to the Free plan. Everything you built stays: you can study, browse and export it, and the features that need a paid plan switch off.
• Refunds, including the 14-day refund of your first payment, are in our Refund Policy.
• If a payment fails and is not made up, the paid plan ends and your account moves to the Free plan.
• If we raise a plan’s price or lower its AI allowance, we email you before the change applies to you, and you can cancel before it does.

5. Your content

You own what you add, and what the app makes from it for you alone: your words, cards, notes, corrections, transcripts and the audio of your own sentences. We claim no rights in it. You give us permission to store it, process it and send it to the providers named in our Privacy Policy, so that the app can read, transcribe, correct and speak it.

Your material is private to your account and is never shown to other learners. If you turn on your profile’s share link, anyone with the link sees your nickname and progress, and the words you added only if you choose to share details.

If something shown publicly on the service, such as a school page, infringes your rights, write to support@vietnamesebuddy.com and we will look into it.

6. Acceptable use

Please do not:

• add unlawful material, or material you have no right to use;
• add files or documents that have nothing to do with learning Vietnamese, or use the app to store or process them;
• use the service for fraud or spam, or to deceive anyone;
• try to get around the safeguards of the AI features, for example by jailbreaking them;
• share your account, or resell access to the service;
• work around usage limits, scrape the service, or automate access in a way that puts an unreasonable load on it;
• upload malware, probe or test the service’s security, or try to reach other learners’ data or the systems behind the service.

We may remove material that breaks these rules, and suspend or close an account that breaks them. Where the breach is not serious, we contact you first.

7. What we do not promise

We work to keep the service available and your data safe, but we do not promise that it will always be available or free of errors. The service can be down for maintenance or for reasons beyond our control. Keep your own copies of anything you cannot afford to lose: you can export all of your data at any time from Settings.

8. Ending your account

You can delete your account in Settings whenever you have no running subscription: cancel first, and deletion opens when the paid period ends. You are signed out at once, and your data is erased after 30 days; until then you can ask us to undo the deletion. Export your data first if you want to keep it.

We may close an account that has seriously or repeatedly broken these terms, or where the law requires it; the current period is then not refunded. If we close a paid account for any other reason, we refund the unused part of the current billing period.

We may suspend an account at once, before contacting you, where that is needed to stop fraud or a security risk.

9. Liability

Nothing in these terms limits liability for death or personal injury caused by negligence, for fraud, or for anything else that cannot lawfully be limited.

Subject to that, our total liability to you arising from the service is limited to the amount you paid us in the twelve months before the claim arose. We are not liable for indirect or consequential loss, or for loss of data that you could reasonably have kept a copy of with the export feature.

The service is for personal study. If you use it for business purposes, consumer protections do not apply to you.

10. Changes to these terms

We may update these terms as the service changes. If a change materially affects your rights, we email you at least 30 days before it takes effect, and you can cancel before then if you do not accept it. The date at the top of this page shows when it was last revised.

11. Your rights as a consumer

If you are a consumer, nothing in these terms takes away the protections the mandatory law of the country you live in gives you, and you keep the right to bring proceedings there.

See also our Privacy Policy, Refund Policy and Legal notice.