Terms of Service

These terms are adapted from the Creative Commons Terms of Use, used under CC BY 4.0.

1. About these Terms

These Terms of Service (the “Terms”) govern your access to and use of boksen, the spaced-repetition flash-card service at boksen.org (the “Service”). “We”, “us” and “our” mean the operator of boksen; “you” means the person using the Service. Our Privacy Policy forms part of these Terms.

2. Your agreement to these Terms

By accessing or using the Service you agree to be bound by these Terms. If you do not agree to them, do not use the Service. You confirm that you have the legal capacity to enter into this agreement, and that if you are accepting on behalf of an organisation you have authority to bind it.

3. Changes to these Terms

We may revise these Terms from time to time. We will post the revised Terms on this page with a new effective date. Material changes take effect 30 days after they are posted. Your continued use of the Service after that date means you accept the revised Terms; if you do not accept them, stop using the Service.

4. Eligibility and your account

• You must be at least 13 years old to use the Service. If you are under the age of digital consent where you live, use the Service only with a parent or guardian's permission.
• Sign-in is passwordless: you give an email address and we send a six-digit login code to it. Anyone who can read that mailbox can sign in as you, so keep access to it secure and do not share login codes.
• We do not store your email address. Your account is identified by a keyed hash of it (see the Privacy Policy). One practical consequence: if you lose access to that address, we cannot recover your account, transfer it, or move your decks to a new one.
• Accounts are for a single person. You are responsible for everything done through your account.

5. No guarantee of learning outcomes, and no professional advice

The Service schedules review sessions; it does not guarantee that you will learn, remember, or pass anything. Deck content — whether provided by us or imported by a user — may contain errors and is offered for study only. It is not medical, legal, financial, or other professional advice, and it is not a substitute for an authoritative source. Verify anything that matters before you rely on it.

6. Decks we provide

The Service includes a small set of shared decks. They are provided as-is, may contain mistakes, and we may correct, replace, or remove them at any time without notice.

7. Content you import

• You keep your content. Cards you upload or paste remain yours. We claim no ownership of them, and — unlike the Creative Commons terms these are adapted from — importing a deck does not place it under any public licence.
• You grant us only the limited, non-exclusive licence we need to run the Service: to store, process, and display your content back to you.
• Imported decks are private to the account that uploaded them. We do not publish them or show them to other users.
• You confirm that you have the rights to the content you import, and that it does not infringe anyone's copyright or other rights, breach a confidence, or break the law.
• We may remove content that breaches these Terms, and may do so without prior notice.
• Keep your own copies. The Service is not a backup service, and we do not promise that your decks or study history will be preserved.

8. Prohibited conduct

You agree not to:

• break any law or infringe anyone's rights through the Service;
• import content you do not have the rights to, or that is unlawful, harassing, defamatory, or invasive of someone's privacy;
• enter an email address that is not yours in order to make login codes be sent to someone who did not ask for them, or otherwise use the Service to send unsolicited messages;
• interfere with or damage the Service — including by uploading malicious code, or by probing, scanning, or load-testing it without our written permission;
• circumvent the rate limits, the sign-in verification challenge, or any other protective measure;
• access the Service by automated means in a way that burdens it, or scrape it in bulk;
• attempt to access an account, system, or data you are not authorised to access;
• impersonate any person or misrepresent your affiliation with anyone.

9. Availability and changes to the Service

The Service is provided free of charge. We do not promise that it will be available, uninterrupted, or error-free, and we may change, suspend, or discontinue any part of it — or all of it — at any time.

10. Trademarks

The boksen name and logo are ours. Any other trademarks that appear on the Service belong to their respective owners and are referred to for identification only; their appearance does not imply any endorsement or affiliation.

11. Copyright complaints

If you believe content on the Service infringes your copyright, write to hello@boksen.org with: your contact details; identification of the work you say is infringed; identification of the material you are complaining about and where it is on the Service; a statement that you believe in good faith that the use is not authorised by the rights holder or the law; a statement that the information in your notice is accurate and that you are the rights holder or authorised to act for them; and your signature (electronic is fine). We will respond to valid notices and may remove the material and terminate the account of anyone who repeatedly infringes.

12. Privacy

Our Privacy Policy explains what we collect and why. It is incorporated into these Terms by reference.

13. Disclaimer of warranties

THE SERVICE AND ALL CONTENT ARE PROVIDED “AS IS” AND “AS AVAILABLE”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. TO THE FULLEST EXTENT PERMITTED BY LAW WE DISCLAIM ALL WARRANTIES, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. We do not warrant that the Service will be uninterrupted or secure, that defects will be corrected, or that any content is accurate or complete.

Some jurisdictions do not allow the exclusion of implied warranties, so parts of this section may not apply to you.

14. Limitation of liability

TO THE FULLEST EXTENT PERMITTED BY LAW, WE WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES, OR FOR ANY LOSS OF DATA, STUDY HISTORY, PROFITS, OR GOODWILL, ARISING OUT OF OR RELATING TO THESE TERMS OR THE SERVICE, WHETHER IN CONTRACT, TORT, OR OTHERWISE, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Nothing in this section, or anywhere else in these Terms, limits or excludes:

• liability for death or personal injury caused by our negligence;
• liability for fraud or fraudulent misrepresentation;
• liability for our gross negligence or wilful misconduct;
• any right you have under consumer protection or data protection law that cannot be waived by agreement — including the right to compensation under Article 82 of the EU and UK General Data Protection Regulation; or
• any other liability that applicable law does not permit to be limited or excluded.

Some jurisdictions do not allow the limitations in the first paragraph of this section, so parts of it may not apply to you.

15. Indemnification

You agree to indemnify and hold us harmless from any claim, loss, liability, or expense (including reasonable legal fees) arising out of your use of the Service, the content you import, or your breach of these Terms or of anyone's rights.

16. Termination

You may stop using the Service at any time. You can delete decks you imported from within the app, and you can ask us to delete your account — see Your rights and choices in the Privacy Policy. We may suspend or terminate your access at any time, including if you breach these Terms. Sections 7 (the licence you grant us), 13, 14, 15, and 17 survive termination.

17. General

• Governing law. These Terms are governed by the laws of the Commonwealth of Pennsylvania, USA, without regard to its conflict-of-laws rules.
• Jurisdiction. You and we agree to the exclusive jurisdiction of the state and federal courts located in Pennsylvania for any dispute arising out of these Terms or the Service.
• Severability. If any provision is held unenforceable, it is severed and the rest remains in force.
• No waiver. Our failure to enforce a provision is not a waiver of it.
• No agency. These Terms create no partnership, joint venture, employment, or agency relationship between us.
• Assignment. You may not assign these Terms without our consent; we may assign them in connection with a transfer of the Service.
• Entire agreement. These Terms and the Privacy Policy are the whole agreement between you and us about the Service.

18. Contact

Questions about these Terms: hello@boksen.org.