Privacy policy
Last updated 14 November 2026
In short: we keep what we need to run your account and your notebooks. To mark and explain your work, we send it to AI services, and only after you agree. We don't sell your data and we don't show ads. You can delete your account at any time from Settings.
Who we are
Bayyina (بيِّنة) is made by Hsafa (حصافة), hsafa.com, in Saudi Arabia. For any question about your data, write to support@hsafa.com.
What we keep
| What | Why |
|---|---|
| Your email address and first name | To sign you in with a code and to greet you |
| Your field of study or work, and what you need most | So the tutor's examples and practice fit you |
| Your notebooks: the pages, your handwriting and the tutor's marks | So your work is saved and you can open it on another device |
| Each time you ask the tutor: the time, the problem, the answer, the AI model used and its cost | To keep the tutor working well, to count your AI uses, and to stop misuse |
| If you ask for an invitation or a demo: what you write in the form | To answer you |
We don't keep pictures of your pages beyond what's in your notebooks, we don't track you across other apps or websites, and we don't use your data for advertising.
AI services
When you press Check, Hint, Explain or Ask, we send an image of your page, the problem, your question, your field and your language to an AI model, which answers. We use models from OpenAI and Anthropic, reached through OpenRouter. If you turn on the tutor's voice, the tutor's words (not yours) are sent to ElevenLabs to be spoken. These services handle the data to give that answer, under their own terms for business customers. The app asks for your agreement before the tutor's first answer, and the tutor answers no one who hasn't agreed.
AI can make mistakes. Bayyina checks the tutor's marks with its own maths checks where it can, but please check important answers.
Others who handle your data for us
- Our servers, where your account and notebooks are stored.
- Resend, which emails your sign-in codes and invitations.
- The AI services above.
We don't sell or rent your data to anyone. We would only share it if the law requires us to.
How long we keep it
Your account and notebooks are kept until you delete your account. When you do (Settings → Delete account), your account, notebooks and AI-use counts are deleted at once. Records in our server logs may stay for a while; write to us and we'll remove them.
Your rights
You can see, correct or delete your data, and ask us how it's used. Most of this you can do in the app; for the rest, write to support@hsafa.com. We follow Saudi Arabia's Personal Data Protection Law (PDPL).
Children
Students under 13 may use Bayyina only with a parent's or guardian's permission. If you think a child is using it without permission, write to us and we'll delete the account.
Changes
If we change this policy, we'll update the date above, and tell you in the app if the change matters.