Terms of Service (MVP)

Effective date: 2026-04-21 Last updated: 2026-10-14

This is a real but lightweight Terms of Service designed for beta user testing. Have a lawyer review before broader rollout.

1. Overview

This is an experimental learning platform designed to help users practice and improve knowledge through adaptive questions, video recommendations, and progress tracking.

By using this service, you agree to these Terms.

2. Beta Service

This product is in active development and provided as a beta system.

  • Features may change or break without notice
  • Accuracy of recommendations, scoring, or feedback is not guaranteed
  • The service may be interrupted or shut down at any time

3. Educational Use Only

This system is designed for educational practice and self-improvement. It is not:

  • Accredited instruction
  • A substitute for formal education
  • A guarantee of learning outcomes

4. User Accounts

If accounts are used:

  • You must be at least 14 years old to use the service
  • If you are under 18, a parent or guardian may also agree to these Terms on your behalf
  • Paid plans, when we offer them, will require an adult to make the purchase
  • You are responsible for activity under your account
  • You must provide accurate information where required
  • We may restrict or remove access at any time

5. Data and Content

You retain rights to your input (answers, responses, interactions), but you grant us permission to:

  • Store it
  • Process it
  • Analyze it for learning and system improvement

Content you create and upload, such as questions or courses, is covered in §11.

6. Acceptable Use

You agree not to:

  • Attempt to reverse engineer or exploit the system
  • Use bots, scrapers or other automated means to access the service, or copy, download or collect its content (such as questions) in bulk
  • Interfere with system operation
  • Use the system for illegal purposes

7. Limitation of Liability

To the maximum extent permitted by law:

  • We are not liable for any direct or indirect damages arising from use of the system
  • This includes educational outcomes, decisions made based on outputs, or data loss

8. Account Termination and Deletion

You can stop using the service at any time. You can also delete your account yourself from Settings → Danger zone → Delete account permanently.

Account deletion is irreversible: your name, email, username, OAuth identifiers, and saved-concept lists are permanently removed, and we are unable to restore or export your account afterward. Some learning records (your answers, criterion-level grading evidence, and any feedback or ratings you submitted) may be retained in an irreversibly de-identified form for measurement and content-quality research. See the Privacy Policy §6 for the full breakdown, the 30-day backup window, and the residual-risk disclosure.

We may also suspend or terminate accounts that violate these Terms or threaten the integrity of the service.

9. Assignment and Business Transfers

We may assign these Terms, and transfer the service and the data needed to operate it, in connection with a merger, acquisition, reorganization, financing, bankruptcy or insolvency, or a sale or transfer of all or part of our assets — including a transfer to an affiliate, or to a successor or newly-formed entity under common control with us (for example, moving the product into a new company). You may not assign your account or your rights under these Terms without our consent.

  • Your account moves with the service. On a transfer, your account and the rights and obligations in these Terms continue with the successor on the same footing. Your deletion rights in §8 and your protections in the Privacy Policy (§6 and §11) carry over unchanged, and any successor is bound to the Privacy Policy or terms at least as protective.
  • De-identified and aggregate data. Irreversibly de-identified and aggregate data we derive from usage — including the calibrated question bank (item and criterion difficulty parameters, scale versions) and our own authored question content, none of which carries personal identifiers — is our property. We may retain, use, and transfer it freely, including to an affiliate or successor and including separately from any transfer above. This is distinct from the rights you retain in your own input under §5, and it does not affect your deletion rights under §8.

10. Changes

We may update these Terms. Continued use implies acceptance of updates.

11. Content You Upload

Where the service lets you add your own content, such as questions, answer keys, marking guides or courses:

  • You keep ownership. You own what you create. You give us a non-exclusive, worldwide, royalty-free licence to store, copy, display and process it in order to run the service: showing it to the people you share it with, grading answers to it, and measuring how well it works as a question.
  • It stays private unless you share it. Content you upload is visible only to you and the people you choose to share it with. It is shown to all users only if you choose to publish it, and you can unpublish it at any time.
  • You must have the right to upload it. By uploading, you confirm that you wrote the content yourself, or that you have permission or a legal right to use it in this way. Do not upload other people's work, such as questions copied word for word from a textbook, unless you have that right. Putting a question in your own words, with your own numbers and examples, is the safest approach.
  • When you delete it. If you delete content, we stop showing it. Answers already given to it may be kept in irreversibly de-identified form for measurement, as described in §8 and the Privacy Policy.
  • We may remove content that we believe infringes someone's rights or breaks these Terms, and we may close the accounts of people who repeatedly upload infringing content.

12. Copyright Complaints

If you believe content on the service infringes your copyright, email support@mendalev.com with: the work you own, where the content appears on the service, and how to reach you. We will review the complaint, may remove the content, and will forward notices to the person who uploaded it where Canadian law requires.

Implementation references (repository)

These pointers are for legal review, school procurement review, and contributors auditing how these Terms are operationalized. They are not part of the user-facing terms above.

  • profiling_ethics.md — the principles governing what we infer or store about a user. §5 ("Data and Content") above is the user-facing surface of those principles.
  • privacy_policy.md — companion document covering data collection, use, sharing, deletion, and de-identification.
  • school_privacy_posture.md — current posture against school / district procurement requirements.
  • §11–12 (added 2026-10-06, ahead of teacher question uploads, which are not built yet): before uploads open, give §12 a dedicated contact address, and register a DMCA agent if the service has US users. Product plan and the open counsel questions: future_ideas.md, "Upload Your Own Questions (Private by Default)".