Terms of Service

Welcome to SoulStack. These Terms of Service ("Terms") are a binding legal agreement between you and SoulStack, Inc. ("SoulStack," "we," "us," or "our") that govern your access to and use of our websites (including www.soulstack.so), applications, browser extensions, and related products and services that link to or reference these Terms (collectively, the "Services").

SoulStack is a reading and knowledge management platform that helps you discover books, articles, podcasts, and videos, capture and connect notes and highlights, use AI-powered features to surface patterns across what you read and listen to, and build and showcase your intellectual identity.

PLEASE READ THESE TERMS CAREFULLY. By creating an account, accessing, or using the Services, you agree to be bound by these Terms and by our Privacy Policy, which is incorporated by reference. If you do not agree, do not access or use the Services.

These Terms contain a binding arbitration provision and a class action waiver in Section 17 that affect your legal rights. Please review that section carefully.

1. Eligibility and Accounts

You must be at least 13 years old to use the Services. If you are between 13 and the age of majority in your jurisdiction, you may use the Services only with the involvement and consent of a parent or legal guardian where required by applicable law. By using the Services, you represent that you meet these requirements and that you have the legal capacity to enter into these Terms.

To access most features, you must create an account. You agree to provide accurate, current, and complete information and to keep it updated. You are responsible for safeguarding your account credentials and for all activity that occurs under your account. Notify us promptly at support@soulstack.so if you suspect unauthorized use of your account. We are not liable for losses arising from unauthorized use of your account that results from your failure to keep your credentials secure.

2. Changes to the Terms or Services

We may modify these Terms from time to time. If we make material changes, we will endeavor to provide notice, such as by email or a prominent notice within the Services, before the changes take effect. Your continued use of the Services after changes become effective constitutes acceptance of the revised Terms. If you do not agree to the changes, you must stop using the Services.

We are continually improving the Services and may add, change, or remove features, or suspend or discontinue the Services (or any part of them) at any time. We will try to give reasonable notice of material changes where practical, but we are not obligated to maintain any particular feature.

3. The Services and License to You

Subject to your compliance with these Terms, we grant you a limited, non-exclusive, non-transferable, non-sublicensable, revocable license to access and use the Services for your personal, non-commercial use, or for your internal business use where you have a plan that permits it. This license does not include any right to resell the Services, or to copy, modify, reverse engineer, or create derivative works of the Services except as expressly permitted by law.

4. Your Content

Your Content. "Your Content" means the notes, highlights, annotations, tags, uploads, imported material, prompts, comments, profile information, and any other content you create, submit, import, or store through the Services.

Ownership. You retain all ownership rights you have in Your Content. We do not claim ownership of Your Content.

License to us. You grant SoulStack a worldwide, non-exclusive, royalty-free license to host, store, reproduce, process, adapt, and display Your Content solely as necessary to operate, provide, secure, and improve the Services for you — including transmitting Your Content to the AI and infrastructure providers that power certain features (see Section 5), and displaying content you choose to make public (see Section 7). This license exists only for the purpose of running the Services and ends when you delete Your Content or your account, except for (i) content you have shared or made public that others have copied or stored, (ii) residual copies in routine backups for a limited period, and (iii) where retention is required by law.

Responsibility for Your Content. You are solely responsible for Your Content and represent that you have the necessary rights to submit it and to grant the license above, and that Your Content does not violate these Terms, applicable law, or the rights of any third party.

Backups. While we take reasonable measures to protect Your Content, we do not guarantee against loss or corruption, and you are responsible for maintaining your own copies of any content that is important to you.

5. AI Features

The Services include AI-powered features (for example, a personal AI historian and connection layer that searches across your highlights, transcripts, and pages to surface patterns and connections). To provide these features, we process Your Content and your prompts, and we may transmit them to third-party AI and infrastructure providers acting on our behalf.

You understand and agree that:

• AI-generated outputs are produced automatically and may be inaccurate, incomplete, or misleading. You should not rely on AI outputs as a substitute for professional advice (legal, financial, medical, or otherwise) or independent verification.
• AI outputs are provided for informational and creative purposes and may not be unique; similar outputs may be generated for other users.
• You are responsible for how you use AI outputs, including any decisions you make based on them.

We do not permit our AI providers to use Your Content to train their models except as necessary to provide the Services to you, or as otherwise disclosed in our Privacy Policy. Where our practices differ for a specific feature, we will disclose that in-product or in the Privacy Policy.

6. Third-Party Content, Sources, and Integrations

The Services help you discover and engage with books, articles, podcasts, videos, and other third-party content, and let you connect third-party services (such as Readwise, a Kindle account, or login providers like Google or Apple). We do not own or control third-party content or services, we do not endorse them, and we are not responsible for them. Your use of third-party content and services is governed by the applicable third party's terms and privacy policies, and you are responsible for complying with them. When you connect a third-party service, you authorize us to access and import the information you designate, consistent with our Privacy Policy.

7. Public Profiles and Sharing

The Services let you create profiles and identity artifacts (such as a SoulPage or a SoulPrint) and share content. You control what you make public. When you choose to make information public or share it, it may be viewable, copied, or stored by others, and we cannot control or delete copies that others have made. You are responsible for ensuring that anything you make public complies with these Terms and does not disclose confidential information or infringe the rights of others.

8. Subscriptions, Billing, and Trials

Paid plans. Certain features require a paid subscription. Prices and features are described at the point of purchase. By subscribing, you authorize us and our third-party payment processors to charge your payment method for the applicable fees.

Auto-renewal. Unless otherwise stated, subscriptions automatically renew at the end of each billing period at the then-current rate until you cancel. You authorize us to charge your payment method for each renewal until you cancel.

Cancellation. You may cancel at any time through your account settings or as described in-product. Cancellation takes effect at the end of the current billing period, and you will retain access to paid features until then.

Free trials. We may offer free trials. Unless you cancel before the trial ends, we may automatically begin charging your payment method when the trial converts to a paid subscription. Trial terms will be disclosed at sign-up.

Refunds. Except where required by law, fees are non-refundable and there are no refunds or credits for partial billing periods, downgrades, or unused features.

Price changes. We may change prices. We will provide notice of price changes as required by applicable law, and changes will apply to the next billing period after the notice.

Taxes. Fees are exclusive of taxes, and you are responsible for any applicable taxes.

Payment processing. Payment card processing is handled by our third-party payment processors. We do not store full payment card numbers, and your use of payment processing is subject to the processors' terms.

9. Acceptable Use

You agree not to, and not to allow any third party to:

• Use the Services in violation of any applicable law or regulation, or for any illegal, fraudulent, or unauthorized purpose;
• Upload, submit, or share content that is unlawful, defamatory, harassing, abusive, hateful, obscene, or that infringes or misappropriates any third party's intellectual property, privacy, or other rights;
• Upload or distribute content you do not have the right to submit, or that violates the terms of the source it came from;
• Circumvent, disable, or interfere with the security, integrity, or performance of the Services, or attempt to gain unauthorized access to any systems or accounts;
• Reverse engineer, decompile, or disassemble any part of the Services, except to the extent applicable law prohibits this restriction;
• Use bots, scrapers, or other automated means to access the Services or extract data, except as expressly permitted by us in writing;
• Use the Services to build a competing product or service, or to train a machine learning or AI model;
• Resell, sublicense, or commercially exploit the Services except as expressly permitted;
• Impersonate any person or entity or misrepresent your affiliation; or
• Use the Services in a manner that imposes an unreasonable or disproportionately large load on our infrastructure.

We may investigate and take appropriate action against violations, including removing content, suspending or terminating accounts, and reporting to law enforcement.

10. Feedback

If you give us feedback, ideas, or suggestions about the Services ("Feedback"), you grant us a perpetual, irrevocable, worldwide, royalty-free license to use and incorporate the Feedback without any obligation or compensation to you.

11. Intellectual Property

The Services, including all software, text, graphics, logos, designs, and other materials we provide (excluding Your Content and third-party content), and all intellectual property rights therein, are owned by SoulStack or our licensors and are protected by intellectual property laws. Except for the limited license granted to you in these Terms, we reserve all rights. "SoulStack," "SoulPage," "SoulPrint," "Polaris," and related names and logos are our trademarks, and you may not use them without our prior written permission.

12. Copyright and DMCA

We respect intellectual property rights and expect our users to do the same. If you believe content on the Services infringes your copyright, please send a notice to our designated agent at support@soulstack.so including: (i) your physical or electronic signature; (ii) identification of the copyrighted work claimed to be infringed; (iii) identification of the allegedly infringing material and its location; (iv) your contact information; (v) a statement that you have a good-faith belief the use is not authorized; and (vi) a statement, under penalty of perjury, that the information is accurate and that you are the owner or authorized to act on the owner's behalf. We may remove allegedly infringing material and terminate repeat infringers' accounts.

13. Termination

You may stop using the Services and delete your account at any time. We may suspend or terminate your access to the Services, with or without notice, if we believe you have violated these Terms, if required by law, or to protect the Services or other users. Upon termination, your license to use the Services ends. Sections that by their nature should survive termination (including Sections 4, 10, 11, and 14 through 19) will survive.

14. Disclaimers

THE SERVICES AND ALL CONTENT AND OUTPUTS ARE PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY. TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE DISCLAIM ALL WARRANTIES, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SERVICES WILL BE UNINTERRUPTED, SECURE, ERROR-FREE, OR THAT ANY CONTENT OR AI OUTPUT WILL BE ACCURATE, RELIABLE, OR COMPLETE. Some jurisdictions do not allow the exclusion of certain warranties, so some of the above may not apply to you.

15. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT WILL SOULSTACK OR ITS AFFILIATES, OFFICERS, EMPLOYEES, OR AGENTS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS, REVENUES, DATA, OR GOODWILL, ARISING OUT OF OR RELATED TO YOUR USE OF (OR INABILITY TO USE) THE SERVICES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

TO THE MAXIMUM EXTENT PERMITTED BY LAW, OUR TOTAL LIABILITY ARISING OUT OF OR RELATED TO THESE TERMS OR THE SERVICES WILL NOT EXCEED THE GREATER OF (I) THE AMOUNTS YOU PAID US FOR THE SERVICES IN THE TWELVE (12) MONTHS BEFORE THE EVENT GIVING RISE TO THE LIABILITY, OR (II) ONE HUNDRED U.S. DOLLARS ($100).

Some jurisdictions do not allow certain limitations of liability, so some of the above may not apply to you.

16. Indemnification

You agree to indemnify, defend, and hold harmless SoulStack and its affiliates, officers, employees, and agents from and against any claims, liabilities, damages, losses, and expenses (including reasonable attorneys' fees) arising out of or related to: (i) your use of the Services; (ii) Your Content; (iii) your violation of these Terms; or (iv) your violation of any law or the rights of any third party.

17. Dispute Resolution; Arbitration; Class Action Waiver

PLEASE READ THIS SECTION CAREFULLY. IT AFFECTS YOUR LEGAL RIGHTS.

Informal resolution. Before filing a claim, you agree to try to resolve the dispute informally by contacting us at support@soulstack.so. We will try to resolve the dispute informally for at least 60 days before either party may initiate arbitration.

Binding arbitration. Except for claims that qualify for small claims court and disputes about intellectual property, any dispute arising out of or relating to these Terms or the Services will be resolved by binding individual arbitration, rather than in court, in accordance with the rules of a recognized arbitration provider. Judgment on the award may be entered in any court with jurisdiction.

Class action waiver. You and SoulStack agree that each may bring claims against the other only in an individual capacity, and not as a plaintiff or class member in any purported class or representative proceeding. The arbitrator may not consolidate more than one person's claims or preside over any form of a representative or class proceeding.

Opt-out. You may opt out of this arbitration agreement by sending written notice to support@soulstack.so within 30 days of first accepting these Terms. If you opt out, neither party will be bound by the arbitration and class action waiver provisions.

18. Governing Law

These Terms are governed by the laws of the State of Delaware, without regard to its conflict of laws principles, except that the arbitration provision is governed by the Federal Arbitration Act. Subject to Section 17, any disputes not subject to arbitration will be brought exclusively in the state or federal courts located in Delaware, and you consent to their jurisdiction.

19. General Provisions

Entire agreement. These Terms and the Privacy Policy constitute the entire agreement between you and SoulStack regarding the Services and supersede any prior agreements.

Severability. If any provision is found unenforceable, the remaining provisions will remain in full effect.

No waiver. Our failure to enforce any provision is not a waiver of our right to do so later.

Assignment. You may not assign these Terms without our prior written consent. We may assign these Terms in connection with a merger, acquisition, or sale of assets.

Force majeure. We are not liable for any failure or delay resulting from causes beyond our reasonable control.

Relationship. These Terms do not create any partnership, joint venture, employment, or agency relationship between you and SoulStack.

20. Contact Us

If you have questions about these Terms, please contact us at support@soulstack.so, or by mail at: SoulStack, Inc., [SoulStack mailing address].