Terms of Service

Agreement to our Legal Terms

We are Mackenzie Graungaard-Robinson, doing business as Didact Arc (“Company,” “we,” “us,” or “our”), a sole proprietorship operating from 31 Penetang St, APT 109, Barrie, Ontario L4M 6E8, Canada.

We operate the website https://www.didactarc.dev (the “Site”), as well as any other related products and services that refer or link to these legal terms (the “Legal Terms”) (collectively, the “Services”).

Didact Arc is a web-based self-study tracking application that helps users manage long-term learning across multiple subjects. The service uses spaced-repetition principles and proficiency decay modelling to surface topics for review at appropriate intervals, and includes AI-assisted features for generating study topics and answering subject-scoped questions. Didact Arc is offered through a free tier with limited monthly usage and a paid subscription tier with expanded access.

You can contact us by phone at (+1) 705-984-8333, by email at privacy@didactarc.dev, or by mail to 31 Penetang St, APT 109, Barrie, Ontario L4M 6E8, Canada.

These Legal Terms constitute a legally binding agreement made between you, whether personally or on behalf of an entity (“you”), and Mackenzie Graungaard-Robinson, concerning your access to and use of the Services. You agree that by accessing the Services, you have read, understood, and agreed to be bound by all of these Legal Terms. If you do not agree with all of these Legal Terms, then you are expressly prohibited from using the Services and you must discontinue use immediately.

We will provide you with prior notice of any scheduled changes to the Services you are using. The modified Legal Terms will become effective upon posting or upon notifying you by email. By continuing to use the Services after the effective date of any changes, you agree to be bound by the modified terms.

The Services are intended for users who are at least 18 years old. Persons under the age of 18 are not permitted to use or register for the Services.

We recommend that you print a copy of these Legal Terms for your records.

1. Our Services

The information provided when using the Services is not intended for distribution to or use by any person or entity in any jurisdiction or country where such distribution or use would be contrary to law or regulation, or which would subject us to any registration requirement within such jurisdiction or country. Those who choose to access the Services from other locations do so on their own initiative and are solely responsible for compliance with local laws.

The Services are not tailored to comply with industry-specific regulations (HIPAA, FISMA, etc.), so if your interactions would be subject to such laws, you may not use the Services. You may not use the Services in a way that would violate the Gramm-Leach-Bliley Act (GLBA).

2. Intellectual property rights

Our intellectual property

We are the owner or licensee of all intellectual property rights in our Services, including all source code, databases, functionality, software, website designs, audio, video, text, photographs, and graphics in the Services (collectively, the “Content”), as well as the trademarks, service marks, and logos contained therein (the “Marks”).

Our Content and Marks are protected by copyright and trademark laws (and various other intellectual property and unfair competition laws) and treaties around the world. The Content and Marks are provided in or through the Services “AS IS” for your personal, non-commercial use only.

Your use of our Services

Subject to your compliance with these Legal Terms, including the “Prohibited Activities” section below, we grant you a non-exclusive, non-transferable, revocable licence to:

• access the Services; and
• download or print a copy of any portion of the Content to which you have properly gained access,

solely for your personal, non-commercial use.

Except as set out in this section or elsewhere in these Legal Terms, no part of the Services and no Content or Marks may be copied, reproduced, aggregated, republished, uploaded, posted, publicly displayed, encoded, translated, transmitted, distributed, sold, licensed, or otherwise exploited for any commercial purpose without our express prior written permission.

If you wish to make any use of the Services, Content, or Marks other than as set out in this section, please address your request to privacy@didactarc.dev. We reserve all rights not expressly granted to you. Any breach of these intellectual property rights will constitute a material breach of our Legal Terms, and your right to use the Services will terminate immediately.

Your submissions and contributions

Submissions.By directly sending us any question, comment, suggestion, idea, feedback, or other information about the Services (“Submissions”), you agree to assign to us all intellectual property rights in such Submission. We shall own this Submission and be entitled to its unrestricted use and dissemination for any lawful purpose, commercial or otherwise, without acknowledgment or compensation to you.

Contributions.Where the Services allow you to create, submit, post, display, transmit, or distribute content (including notes, topics, study path selections, and chat messages — “Contributions”), you retain ownership of your Contributions. You grant us a non-exclusive, worldwide, royalty-free licence to host, store, reproduce, and display your Contributions strictly to the extent required to operate the Services for you. We do not publicly display your Contributions to other users.

You are responsible for what you upload. You confirm that your Submissions and Contributions are original to you (or that you have the necessary rights), do not contain confidential information of any third party, and do not violate any law or these Legal Terms.

We may remove or edit your content. Although we have no obligation to monitor any Contributions, we reserve the right to remove or edit any Contribution at any time without notice if we determine, in our reasonable opinion, that it is harmful or in breach of these Legal Terms. We may also suspend or disable your account in such cases.

3. User representations

By using the Services, you represent and warrant that:

1. all registration information you submit will be true, accurate, and current;
2. you will maintain the accuracy of such information;
3. you have the legal capacity and you agree to comply with these Legal Terms;
4. you are not a minor in the jurisdiction in which you reside;
5. you will not access the Services through automated or non-human means, whether through a bot, script, or otherwise;
6. you will not use the Services for any illegal or unauthorised purpose; and
7. your use of the Services will not violate any applicable law or regulation.

If you provide any information that is untrue, inaccurate, not current, or incomplete, we have the right to suspend or terminate your account and refuse any and all current or future use of the Services.

4. User registration

You must register an account to use most features of the Services. You agree to keep your password confidential and you are responsible for all use of your account and password. We reserve the right to remove, reclaim, or change a username you select if we determine, in our sole discretion, that it is inappropriate, obscene, or otherwise objectionable.

5. Purchases and payment

We accept the following forms of payment, processed through Stripe: Visa, Mastercard, American Express, and Discover.

You agree to provide current, complete, and accurate purchase and account information for all purchases made via the Services, and to promptly update your account and payment information so that we can complete your transactions and contact you as needed. Sales tax may be added to the price of purchases as required by law.

Prices are listed in US dollars (USD) unless otherwise stated. We reserve the right to change prices at any time. All payments are non-refundable except as expressly stated in these Legal Terms or required by applicable law.

We reserve the right to refuse any order placed through the Services. We may, at our sole discretion, limit or cancel quantities purchased per person or per order. We reserve the right to limit or prohibit orders that, in our sole judgment, appear to be placed by dealers, resellers, or distributors.

6. Subscriptions

Billing and renewal. Your subscription will continue and automatically renew unless cancelled. You consent to our charging your payment method on a recurring basis without requiring your prior approval for each recurring charge, until you cancel. The length of your billing cycle (monthly or annual) depends on the plan you select.

Cancellation. You can cancel your subscription at any time through the billing section of your account. Your cancellation will take effect at the end of the current paid term. We do not provide pro-rated refunds for unused time on a cancelled subscription.

Fee changes. We may, from time to time, make changes to the subscription fee. We will give you reasonable advance notice of any change in fees, and you can cancel before the change takes effect.

Free tier. The free tier provides full access to the core study tracking features and a limited monthly allotment of AI-assisted features. We may change the limits at our discretion with reasonable notice.

7. Prohibited activities

You may not access or use the Services for any purpose other than that for which we make the Services available. The Services may not be used in connection with any commercial endeavours except those that are specifically endorsed or approved by us.

As a user of the Services, you agree not to:

• Systematically retrieve data or other content from the Services to create or compile, directly or indirectly, a collection, compilation, database, or directory without written permission from us.
• Trick, defraud, or mislead us and other users, especially in any attempt to learn sensitive account information such as user passwords.
• Circumvent, disable, or otherwise interfere with security-related features of the Services, including features that prevent or restrict the use or copying of any Content or enforce limitations on the use of the Services.
• Disparage, tarnish, or otherwise harm us and/or the Services.
• Use any information obtained from the Services in order to harass, abuse, or harm another person.
• Make improper use of our support services or submit false reports of abuse.
• Use the Services in a manner inconsistent with any applicable laws.
• Engage in unauthorised framing of or linking to the Services, or use the Services to advertise or offer to sell goods and services.
• Upload or transmit (or attempt to upload or transmit) viruses, Trojan horses, or other material that interferes with any party's use and enjoyment of the Services or modifies, impairs, or disrupts the operation of the Services.
• Engage in any automated use of the system, such as using scripts to send messages, or use any data mining, robots, or similar data gathering and extraction tools.
• Delete the copyright or other proprietary rights notice from any Content, or attempt to bypass any measures of the Services designed to prevent or restrict access.
• Copy or adapt the Services' software, including but not limited to Flash, PHP, HTML, JavaScript, or other code.
• Decipher, decompile, disassemble, or reverse engineer any of the software comprising or making up the Services, except as expressly permitted by applicable law.
• Use the Services as part of any effort to compete with us or otherwise use the Services and/or the Content for any revenue-generating endeavour or commercial enterprise.
• Use the Services to send unsolicited or unauthorised advertising or promotional materials.
• Submit prompts or content to AI features that are unlawful, harmful to others, or designed to extract or attack the underlying model.

8. User generated contributions

The Services allow you to create study content, including subjects, topics, notes, to-dos, study path selections, and AI chat history. Contributions are stored in your account and are not publicly displayed to other users by default.

You are solely responsible for your Contributions. We are not responsible for the content or accuracy of any Contributions you create or any AI-generated content you choose to save.

9. Contribution licence

You retain full ownership of all of your Contributions and any intellectual property rights or other proprietary rights associated with them. You grant us only the limited licence described in Section 2 above — solely to the extent required to operate the Services for you (storage, retrieval, and display in your account).

10. Third-party websites and content

The Services may contain links to other websites, as well as content originating from third parties (for example, Stripe's checkout pages, Google's OAuth consent screens, and links to external study resources). Such third-party websites and content are not investigated, monitored, or checked for accuracy, completeness, or appropriateness by us, and we are not responsible for them. Your use of any third-party websites and content is at your own risk and is governed by their own terms.

11. AI-assisted features

The Services include AI-assisted features (topic generation and a scoped tutor chat). AI-generated content is produced by Anthropic's Claude models and may be inaccurate, incomplete, or out of date. You should independently verify any AI-generated information before relying on it for academic, professional, or other important purposes.

We do not warrant the accuracy, completeness, or reliability of AI-generated content. AI features are provided “AS IS” and your use of them is at your own risk.

12. Services management

We reserve the right, but not the obligation, to:

• monitor the Services for violations of these Legal Terms;
• take appropriate legal action against anyone who violates the law or these Legal Terms, including reporting them to law-enforcement authorities;
• in our sole discretion and without limitation, refuse, restrict access to, limit the availability of, or disable any of your Contributions; and
• otherwise manage the Services in a manner designed to protect our rights and property and to facilitate the proper functioning of the Services.

13. Privacy policy

We care about data privacy and security. Please review our Privacy Policy and Cookie Policy. By using the Services, you agree to be bound by them, which are incorporated into these Legal Terms.

14. Copyright infringements

We respect the intellectual property rights of others. If you believe that any material available on or through the Services infringes upon any copyright you own or control, please send a notification to privacy@didactarc.dev with: (a) identification of the copyrighted work claimed to have been infringed; (b) identification of the material claimed to be infringing and information reasonably sufficient to permit us to locate it; (c) your contact information; (d) a statement that you have a good-faith belief that use of the material is not authorised; and (e) a statement, made under penalty of perjury, that the information in your notice is accurate and that you are the owner or authorised to act on the owner's behalf.

15. Term and termination

These Legal Terms remain in full force and effect while you use the Services. Without limiting any other provision of these Legal Terms, we reserve the right to, in our sole discretion and without notice or liability, deny access to and use of the Services to any person for any reason or for no reason, including for breach of any representation, warranty, or covenant contained in these Legal Terms. We may terminate your use or participation in the Services or delete your account and any content or information that you posted at any time, without warning, in our sole discretion.

If we terminate or suspend your account for any reason, you are prohibited from registering and creating a new account under your name, a fake or borrowed name, or the name of any third party, even if you may be acting on behalf of the third party. In addition to terminating or suspending your account, we reserve the right to take appropriate legal action.

16. Modifications and interruptions

We reserve the right to change, modify, or remove the contents of the Services at any time or for any reason at our sole discretion without notice. We have no obligation to update any information on our Services. We will not be liable to you or any third party for any modification, price change, suspension, or discontinuance of the Services.

We cannot guarantee the Services will be available at all times. We may experience hardware, software, or other problems, or need to perform maintenance related to the Services, resulting in interruptions, delays, or errors. You agree that we have no liability for any loss, damage, or inconvenience caused by your inability to access or use the Services during any downtime or discontinuance.

17. Governing law

These Legal Terms and your use of the Services are governed by and construed in accordance with the laws of the Province of Ontario and the federal laws of Canada applicable therein, without regard to its conflict of law principles.

18. Dispute resolution

Informal negotiations.To expedite resolution and control the cost of any dispute, controversy, or claim related to these Legal Terms (each a “Dispute”), the parties agree to first attempt to negotiate any Dispute informally for at least thirty (30) days before initiating arbitration or litigation. Such informal negotiations begin upon written notice from one party to the other.

Binding arbitration. If the parties are unable to resolve a Dispute through informal negotiations, the Dispute will be finally and exclusively resolved by binding arbitration in Ontario, Canada, under the rules of the ADR Institute of Canada. Judgment on the award rendered by the arbitrator may be entered in any court of competent jurisdiction.

Restrictions. The parties agree that any arbitration shall be limited to the Dispute between the parties individually. There is no right or authority for any Dispute to be arbitrated on a class-action basis or to use class-action procedures, and there is no right or authority for any Dispute to be brought in a purported representative capacity on behalf of the general public or any other persons.

Exceptions. The parties agree that the following Disputes are not subject to the above provisions concerning informal negotiations and binding arbitration: (a) any Disputes seeking to enforce or protect, or concerning the validity of, any of the intellectual property rights of a party; (b) any Dispute related to allegations of theft, piracy, invasion of privacy, or unauthorised use; and (c) any claim for injunctive relief.

19. Corrections

There may be information on the Services that contains typographical errors, inaccuracies, or omissions, including descriptions, pricing, availability, and various other information. We reserve the right to correct any errors, inaccuracies, or omissions and to change or update the information on the Services at any time, without prior notice.

20. Disclaimer

The Services are provided on an “AS IS” and “AS AVAILABLE” basis. You agree that your use of the Services will be at your sole risk. To the fullest extent permitted by law, we disclaim all warranties, express or implied, in connection with the Services and your use thereof, including, without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement. We make no warranties or representations about the accuracy or completeness of the Services' content, including AI-generated content, and we will assume no liability or responsibility for any (1) errors or inaccuracies of content, (2) personal injury or property damage of any nature whatsoever resulting from your access to and use of the Services, (3) unauthorised access to or use of our servers and any personal information stored therein, (4) interruption or cessation of transmission to or from the Services, (5) bugs, viruses, or the like that may be transmitted to or through the Services, or (6) errors or omissions in any content for any loss or damage incurred as a result of the use of any content posted, transmitted, or otherwise made available via the Services.

21. Limitations of liability

In no event will we or our directors, employees, or agents be liable to you or any third party for any direct, indirect, consequential, exemplary, incidental, special, or punitive damages, including lost profit, lost revenue, loss of data, or other damages arising from your use of the Services, even if we have been advised of the possibility of such damages. Notwithstanding anything to the contrary contained herein, our liability to you for any cause whatsoever and regardless of the form of the action will at all times be limited to the amount paid, if any, by you to us during the six (6) months prior to any cause of action arising. Certain US state laws and international laws do not allow limitations on implied warranties or the exclusion or limitation of certain damages. If these laws apply to you, some or all of the above disclaimers or limitations may not apply to you, and you may have additional rights.

22. Indemnification

You agree to defend, indemnify, and hold us harmless, including our subsidiaries, affiliates, and all of our respective officers, agents, partners, and employees, from and against any loss, damage, liability, claim, or demand, including reasonable legal fees, made by any third party due to or arising out of: (1) your Contributions; (2) use of the Services; (3) breach of these Legal Terms; (4) any breach of your representations and warranties set forth in these Legal Terms; (5) your violation of the rights of a third party, including but not limited to intellectual property rights; or (6) any overt harmful act toward any other user of the Services with whom you connected via the Services.

23. User data

We will maintain certain data that you transmit to the Services for the purpose of managing the performance of the Services, as well as data relating to your use of the Services. Although we perform regular routine backups of data, you are solely responsible for all data that you transmit or that relates to any activity you have undertaken using the Services. You agree that we shall have no liability to you for any loss or corruption of any such data, and you hereby waive any right of action against us arising from any such loss or corruption of such data.

24. Electronic communications, transactions, and signatures

Visiting the Services, sending us emails, and completing online forms constitute electronic communications. You consent to receive electronic communications, and you agree that all agreements, notices, disclosures, and other communications we provide to you electronically — via email and on the Services — satisfy any legal requirement that such communication be in writing. You hereby agree to the use of electronic signatures, contracts, orders, and other records, and to electronic delivery of notices, policies, and records of transactions initiated or completed by us or via the Services.

25. California users and residents

If any complaint with us is not satisfactorily resolved, you can contact the Complaint Assistance Unit of the Division of Consumer Services of the California Department of Consumer Affairs in writing at 1625 North Market Blvd., Suite N 112, Sacramento, California 95834 or by telephone at (800) 952-5210 or (916) 445-1254.

26. Miscellaneous

These Legal Terms and any policies or operating rules posted by us on the Services or in respect to the Services constitute the entire agreement and understanding between you and us. Our failure to exercise or enforce any right or provision of these Legal Terms shall not operate as a waiver of such right or provision. These Legal Terms operate to the fullest extent permissible by law.

We may assign any or all of our rights and obligations to others at any time. We shall not be responsible or liable for any loss, damage, delay, or failure to act caused by any cause beyond our reasonable control. If any provision or part of a provision of these Legal Terms is determined to be unlawful, void, or unenforceable, that provision or part of the provision is deemed severable from these Legal Terms and does not affect the validity and enforceability of any remaining provisions.

There is no joint venture, partnership, employment, or agency relationship created between you and us as a result of these Legal Terms or use of the Services. You agree that these Legal Terms will not be construed against us by virtue of having drafted them. You hereby waive any and all defences you may have based on the electronic form of these Legal Terms and the lack of signing by the parties hereto to execute these Legal Terms.

27. Contact us

In order to resolve a complaint regarding the Services or to receive further information regarding use of the Services, please contact us at: