Terms of Service

Last Updated: September 15, 2026

These terms are the agreement between you and Vahai. Please read them before using the app.

1. Acceptance of These Terms

Vahai (the "App") is operated by Clarif Bilişim ve Danışmanlık A.Ş., a company registered in Türkiye with the registered address at Sivas ("Vahai", "we", "us"). By downloading, installing or using the App you confirm that you have read and agree to these Terms of Service ("Terms") and to our Privacy Policy. If you do not agree, do not use the App.

2. Eligibility

You must be at least 13 years old to use Vahai. If you are between 13 and 18, you must have the consent of a parent or legal guardian. By using the App you confirm that you meet these requirements.

3. What Vahai Does

Vahai turns study material you provide into practice questions. You add a source — a PDF, a Word, PowerPoint or spreadsheet file, a photo of your notes, an audio or video recording, a YouTube link, a web page, a Google Doc, or text you type — and Vahai uses artificial intelligence to generate a deck of practice questions from it. Written answers are graded by meaning rather than by exact wording. Fennec, the in-app AI tutor, explains what you missed and cites the passage, page or timestamp the answer came from. The App also tracks your study progress through streaks, XP, levels and mastery.

4. Your Account

Some features require an account, which you can create with Apple Sign-In, Google Sign-In or email registration; you may also use parts of the App as a guest. You are responsible for the accuracy of the information you provide, for keeping your credentials confidential, and for activity under your account. Tell us promptly at hello@clarif.co if you suspect unauthorised access.

5. Your Content

5.1 You keep ownership

The sources you upload and the notes and answers you write remain yours. You grant us a limited licence to store and process them — including sending them to our AI provider — solely to operate the App for you: to generate questions, notes, explanations and tutor replies, and to grade your answers. This licence ends when you delete the content or your account, except for backups that expire on our ordinary schedule.

5.2 You must have the right to upload it

You confirm that you own the material you upload or otherwise have the right to use it in this way. Do not upload copyrighted material — textbooks, past exam papers, paid course content, or anything else — unless you are permitted to do so. You are responsible for the material you add, and you agree to indemnify us against claims arising from material you had no right to upload.

5.3 Decks you share

If you create a share link for a deck, anyone with that link who is signed in to Vahai can view it and copy it into their own library. Only share decks whose content you are entitled to share. We may remove shared content that breaches these Terms or the rights of others.

6. AI-Generated Content

Questions, explanations, notes, tutor replies and answer grading are produced by artificial intelligence. They can be incomplete, misleading or wrong. Vahai is a study aid, not a substitute for your original source, your course, or professional advice. Always verify anything that matters against the source material. Our AI provider applies safety filters, so some sources or requests may be refused.

If a question is wrong, irrelevant or misgraded, please use the in-app reporting option — it helps us improve generation quality.

7. Acceptable Use

You agree not to:

8. Usage Limits and Fair Use

AI generation is costly, so both free and premium plans have daily limits — on decks generated, questions produced, pages processed, notes generated and tutor messages sent — as well as limits on file size and media length. The current limits are always shown in the App's Usage screen and may change as we tune the service. We may also apply rate limits, or suspend accounts that abuse the service or attempt to evade these limits.

9. Subscriptions and Payments

9.1 Plans

Vahai offers a free tier with limited daily usage, and a paid subscription ("Vahai Premium") with higher limits and additional features, available on monthly, annual or lifetime terms where offered.

9.2 Free trial

We may offer a free trial. Unless you cancel at least 24 hours before the trial ends, it converts automatically into a paid subscription at the price shown at purchase.

9.3 Billing and renewal

All payments are processed by the Apple App Store or Google Play. Subscriptions renew automatically at the end of each billing period unless cancelled at least 24 hours beforehand. Payment is charged to your store account on confirmation of purchase and on each renewal. You can manage or cancel a subscription in your device's subscription settings; deleting the App does not cancel it.

9.4 Price changes

We may change subscription prices. Changes apply from the next billing period and will be notified in advance as the relevant app store requires.

9.5 Refunds

Refunds are handled by Apple or Google under their own policies. We cannot process store refunds directly. Statutory withdrawal and consumer rights under applicable law — including Turkish consumer legislation — are unaffected.

9.6 Promotional and referral codes

Promo and referral codes may carry their own conditions, expiry dates and usage limits, have no cash value, and may be withdrawn or invalidated if obtained or used abusively.

10. Intellectual Property

The App itself — its software, design, branding, Fennec, and all related materials — belongs to us or our licensors and is protected by intellectual property law. These Terms grant you a personal, non-exclusive, non-transferable, revocable licence to use the App for your own study. Nothing here transfers ownership of the App to you.

11. Suspension and Termination

You may stop using Vahai at any time and delete your account in the App under Profile → Edit Profile → Delete Account, or via our account deletion page. We may suspend or terminate access — including banning a device — if you breach these Terms, abuse the service, or where required by law. If we terminate your account without cause, we will refund any unused portion of a prepaid subscription where the law requires it.

12. Service Availability and Changes

We work to keep Vahai available, but we do not guarantee uninterrupted or error-free service. We may modify, suspend or discontinue features at any time. Generation depends on third-party AI services, and outages or safety refusals on their side may temporarily affect the App. Where a generation fails, we aim to return the consumed quota to your account.

13. Disclaimers

To the fullest extent permitted by law, the App is provided "as is" and "as available", without warranties of any kind, whether express or implied, including fitness for a particular purpose and accuracy of generated content. We do not warrant that using Vahai will produce any particular academic result.

14. Limitation of Liability

To the fullest extent permitted by law, we are not liable for indirect, incidental, special or consequential damages, nor for loss of data, academic outcomes, or profits arising from your use of the App. Our total liability in any 12-month period is limited to the amount you paid us during that period. Nothing in these Terms excludes liability that cannot lawfully be excluded, including liability for death or personal injury caused by negligence, or your mandatory consumer rights.

15. Changes to These Terms

We may update these Terms. Material changes will be announced in the App or by email, and the "Last Updated" date above always reflects the current version. Continuing to use Vahai after a change means you accept the updated Terms.

16. Governing Law

These Terms are governed by the laws of [governing jurisdiction — e.g. the Republic of Türkiye], and the courts of [competent courts] have jurisdiction, without affecting any mandatory consumer protection rights you have in your country of residence.

17. Contact

Questions about these Terms: hello@clarif.co