Terms of Use

When you buy or download a problem set from Arithmekit, we give you a personal, non-exclusive, non-transferable license to use it as described in these Terms. The free problem set is licensed on the same terms.

Families. You may use the materials with the children in your own household, for personal, non-commercial educational use, and you may print them for that use.

Individual educators. You may use the materials in your own teaching or tutoring, including printing them and projecting them for your own students.

Unless we agree in writing, you may not:

• share, post, upload, email, sell, resell, rent, or otherwise distribute the materials, in whole or in part, including through file-sharing sites or online marketplaces;
• copy the materials for people outside your household or your own students;
• remove, hide, or change the license information in a file;
• share your account or sign-in links with anyone else; or
• use the materials to create a competing product.

Our lessons on YouTube are free to watch. This license applies to the problem sets and other files you download from us.

Prices are shown in U.S. dollars at checkout. [SALES TAX: describe how sales tax is calculated and shown.] Payments are processed by Stripe, and we never see your full card number.

What you get. When you buy a problem set, you get a license to download it and keep it, subject to these Terms. You can download it again from your account, within the limits in Section 4.

Refunds. [REFUND POLICY: because problem sets are digital downloads, say whether and when refunds are available.] If you think you were charged in error, contact [SUPPORT EMAIL] and we will look into it.

We sign you in with a one-time link sent to your email. We do not use passwords. You are responsible for your email account and for everything done through your Arithmekit account. Please keep your sign-in links private, and tell us right away if you think someone else has accessed your account.

You must be at least 18 years old, or the age of majority where you live, to create an account or make a purchase. [LAWYER: confirm minimum age and any rules for children’s use.] We may suspend or end an account that violates these Terms.

Each file you download is prepared just for you. It includes your email address and a license ID in the footer of every page and in the file’s hidden properties. This marks your copy as licensed to you. Please do not remove, hide, or change this information.

To protect your account and our materials, we may limit how many times you can download a file each day and may review unusual activity. If we believe a file or an account has been shared without permission, we may suspend access and take other steps allowed by law.

Please use the Services lawfully and respectfully. You agree not to:

• try to access accounts, data, or systems that are not yours;
• interfere with, overload, or disrupt the Services;
• get around limits, watermarks, or sign-in protections;
• scrape, copy, or collect content from the website by automated means;
• send spam or unlawful, harmful, or misleading content through the Services; or
• use the Services in a way that breaks the law or the rights of others.

Arithmekit and its licensors own the Services and all lessons, problem sets, answer keys, designs, logos, and other content, which are protected by copyright, trademark, and other laws. Except for the license in Section 1, we do not transfer any rights to you. “Arithmekit” and our logo are our trademarks. Videos on YouTube are also subject to YouTube’s terms.

If you send us feedback or suggestions, we may use them without obligation to you. [LAWYER: confirm copyright and trademark notices and any registrations.]

The Services and all materials are provided “as is” and “as available.” We work to make our materials accurate and useful, but we do not promise any particular learning results, or that the Services will be uninterrupted or error-free. To the fullest extent allowed by law, we disclaim all implied warranties.

To the fullest extent allowed by law, Arithmekit will not be liable for indirect, incidental, special, consequential, or punitive damages, or for lost profits or data. Our total liability for any claim relating to the Services is limited to the greater of the amount you paid us in the 12 months before the claim and $[AMOUNT]. Some places do not allow these limits, so they may not apply to you. [LAWYER: review these disclaimers and limits for enforceability.]

These Terms are governed by the laws of [STATE], without regard to its conflict-of-law rules. Any dispute will be brought in the state or federal courts located in [COUNTY, STATE], and you and we consent to those courts. Before filing a claim, please contact us at [SUPPORT EMAIL] so we can try to resolve it informally. [LAWYER: decide whether to include arbitration or a class-action waiver.]

We may update these Terms from time to time. We will post the new version here with a new “Last updated” date and, for significant changes, tell you by email or on the Services. If you keep using the Services after the changes take effect, you accept the updated Terms. If you do not agree, please stop using the Services.

[LEGAL BUSINESS NAME], [BUSINESS MAILING ADDRESS], [SUPPORT EMAIL].