Terms of Use

These Terms of Use (the “Terms”) are a binding agreement between you and [PLACEHOLDER: legal entity name] (“StealthZero,” “we,” “us,” or “our”) and govern your access to and use of our websites, web application, companion mobile applications, APIs, and related services (together, the “Service”). By creating an account, clicking to accept, or otherwise accessing or using the Service, you agree to these Terms and to our Privacy Policy. If you do not agree, do not use the Service.

Please read the Acceptable Use, Disclaimers, Limitation of Liability, and Dispute Resolution sections carefully. They limit our liability and affect your legal rights, including by requiring (where enforceable) individual arbitration and a waiver of class actions.

1. Eligibility & acceptance

You must be at least 13 years old to use the Service. If you are under 18 (or the age of majority where you live), you may use the Service only with the involvement and consent of a parent or legal guardian who agrees to these Terms. In jurisdictions that require a higher minimum age for data processing (for example, 16 in parts of the EU/EEA), you must meet that age or have appropriate parental or guardian consent. If you use the Service on behalf of an organization, you represent that you are authorized to bind that organization, and “you” includes that organization.

2. Accounts & security

You must provide accurate, current, and complete information and keep it up to date. You are responsible for safeguarding your credentials and for all activity under your account. We support sign-in by email and password, Google sign-in, and (where enabled) passkeys, and we use bot-protection and request-signing safeguards to help secure access. Notify us promptly at support@stealthzero.ai if you suspect unauthorized use. You may not share, sell, or transfer your account, or use another person’s account without permission.

3. The Service

The Service is a suite of AI-assisted writing and content tools. Features may include, and may change over time:

• AI Humanizer / rephrase with multiple models and modes (for example, Origin, E.D.I.T.H / Shield-Lite, Sentrio, Sentinel-Lite and Sentinel-Max, F.R.I.D.A.Y, and J.A.R.V.I.S), tone, level, temperature, frozen phrases, keyword guardrails, and sentence-level editing tools.
• AI Detector that estimates the likelihood that text reads as AI-generated.
• Auto Agent Rephrase that rewrites whole documents (including .docx) paragraph by paragraph while preserving layout.
• Jarvis Agent tasks that research and draft longer deliverables (such as essays, theses, and research outputs) from a brief.
• AI writing generation for drafting and editing documents.
• AI Reports that submit text to third-party verification engines and return reports (for example, Turnitin, GPTZero, Winston, and Sentrio/Copyleaks).
• Plagiarism Check powered by a third-party plagiarism engine (iThenticate).
• Accounts, history, billing, referrals, support chat, and companion mobile apps.

We may add, change, suspend, or remove features, models, limits, or plans at any time. Some features depend on third-party services that we do not control.

4. License to use the Service

Subject to these Terms, we grant you a limited, non-exclusive, non-transferable, non-sublicensable, revocable license to access and use the Service for your own lawful, internal, and personal or business purposes. We reserve all rights not expressly granted.

5. Customer Content & intellectual property

“Customer Content” means the text, documents, files, prompts, and other materials you submit to the Service, and the outputs the Service generates for you from them. As between you and us, you retain all ownership of your Customer Content. You grant us a worldwide, non-exclusive, royalty-free license to host, store, copy, transmit, process, and display Customer Content solely to operate, provide, secure, and support the Service, to deliver the features you request (including routing content to the model and verification subprocessors described in our Privacy Policy), and to comply with law.

We do not use your Customer Content to train our or any third party’s foundation models. You represent and warrant that you own or have all necessary rights, consents, and permissions to submit your Customer Content and to allow us to process it as described, and that your Customer Content and your use of outputs do not infringe or violate any third-party right or any law.

The Service itself — including our software, models, model names and branding, user interface, designs, logos, and documentation — is owned by us or our licensors and is protected by intellectual property laws. Except for the license granted to you, these Terms do not transfer any of our rights to you.

6. Acceptable use

You are solely responsible for your Customer Content and for how you use the Service and its outputs. You must not, and must not permit anyone else to, use the Service to:

• violate any law, regulation, or third-party right;
• engage in academic dishonesty, cheating, or plagiarism, or violate the policies, honor codes, or rules of any school, university, employer, examination body, or other institution;
• misrepresent the authorship or origin of content, or evade, defeat, or circumvent any academic-integrity, identity, plagiarism, or AI-detection system where doing so is prohibited by law or by an applicable institution’s rules;
• create or distribute content that is unlawful, defamatory, harassing, hateful, fraudulent, deceptive, infringing, sexually exploitative of minors, or that facilitates harm;
• submit content you do not have the right to submit, or that contains another person’s confidential, personal, or proprietary information without authorization;
• introduce malware or harmful code; probe, scan, or test the vulnerability of the Service; or breach or circumvent security, authentication, rate limits, quotas, usage caps, or access controls;
• scrape, crawl, harvest, or use automated means to access the Service except as we expressly permit; or use the Service to build or train a competing product or model;
• reverse engineer, decompile, or disassemble the Service, or attempt to derive source code or underlying models, except to the limited extent this restriction is prohibited by applicable law;
• resell, sublicense, rent, or commercially exploit the Service or your account, or share access in a way that exceeds your plan’s limits; or
• misuse referral, affiliate, trial, credit, or promotional features, including through fraud, self-dealing, or creating multiple or fake accounts.

We may, but are not obligated to, monitor, review, or remove Customer Content or limit use to enforce these Terms, protect the Service and its users, or comply with law.

7. AI outputs — no guarantees

The Service uses artificial intelligence. Outputs are generated automatically and may be inaccurate, incomplete, outdated, biased, offensive, or otherwise unsuitable for your purpose, and may not be unique. Detection scores, “humanization” results, plagiarism matches, and third-party reports are estimates and probabilities, not guarantees. We do not warrant that any output will pass, evade, or avoid being flagged by any AI detector, plagiarism system, or integrity tool, or that any content is or will remain “undetectable.” Detection technology changes constantly and results may differ over time and across tools.

You are solely responsible for reviewing, verifying, and deciding how to use any output, and for ensuring that your use complies with all applicable laws and with the rules of any institution, platform, or third party that may apply to you. You assume all risk arising from your reliance on, or use of, outputs.

8. Third-party services, detectors & reports

The Service integrates third-party providers (for example, model providers, detection and verification vendors, and plagiarism engines). Reports, scores, and results produced by third-party tools belong to and are controlled by those third parties; we pass them through and do not independently verify, endorse, or warrant them. Your use of third-party services may also be subject to those providers’ own terms. We are not responsible for third-party services, their availability, or their results.

9. Plans, billing & the free trial

We offer free and paid plans (for example, Free, Starter, Pro, and Premium) and optional add-ons (for example, report packs, rephrase credits, and Jarvis task credits). Plan features, limits, and prices are shown at the point of purchase and may change.

• Free trial. We may offer a 3-day free trial that requires a valid payment method up front. The trial is limited to one per customer. Unless you cancel before the trial ends, your paid subscription begins automatically and you are charged the then-current price. You can cancel during the trial from your account or by contacting support.
• Auto-renewal. Paid subscriptions are billed in advance and renew automatically for successive periods at the then-current price until you cancel. You authorize us and our payment processor to charge your payment method on each renewal. Cancel anytime; cancellation takes effect at the end of the current billing period and you keep access until then.
• Refunds. Except where required by law, fees are non-refundable. As a courtesy, we offer a 3-day money-back guarantee on eligible new paid subscriptions — request it within 3 days of the charge by emailing support@stealthzero.ai. Add-ons, credits, and consumed usage may be excluded.
• Credits & add-ons. Credits and add-ons are licensed for use within the Service, have no cash value, are non-transferable, and may expire (for example, at the end of a billing period or as stated at purchase). Monthly and daily usage limits may apply and reset on a schedule we set.
• Taxes. Prices exclude taxes unless stated. You are responsible for applicable taxes, and we may collect them where required.
• Price changes. We may change prices and plan features. We will give reasonable notice of changes that affect a recurring charge, and changes apply to your next billing period. Continuing to use a paid plan after a change takes effect means you accept the new price.
• Failed payments. If a charge fails, we may retry, suspend paid features, and downgrade your account after a grace period.

10. Mobile apps & in-app purchases

If you use our companion mobile apps, additional terms apply. Purchases and subscriptions made through the Apple App Store or Google Play are processed by those stores and are governed by the applicable store’s terms, billing, and refund policies, not ours — manage or cancel those subscriptions through your store account. Entitlements, prices, and features may differ between web (Stripe) and in-app purchases, and we are not responsible for store availability, pricing, or processing. Your use of the apps is also subject to the applicable store’s rules, and the stores are intended third-party beneficiaries entitled to enforce these Terms against you.

11. Referral & affiliate program

We may offer referral and affiliate rewards subject to program rules that we may set and change. Rewards are earned only for genuine, qualifying activity. We may withhold, reduce, reverse, claw back, or cancel rewards, and suspend participation, for suspected fraud, self-referral, abuse, chargebacks, refunds, or violations of these Terms or the program rules. Rewards have no cash value except as expressly stated, and we may modify or end the program at any time.

12. Feedback

If you send us suggestions, ideas, or feedback, you grant us a perpetual, irrevocable, worldwide, royalty-free license to use and exploit them for any purpose without obligation or compensation to you.

13. Suspension & termination

You may stop using the Service and close your account at any time. We may suspend, limit, or terminate your access — with or without notice — if we reasonably believe you have violated these Terms, created risk or legal exposure for us or others, or for prolonged inactivity, non-payment, or to comply with law. On termination, your license ends and we may delete your account and Customer Content, subject to our Privacy Policy and legal obligations. Sections that by their nature should survive (including content ownership, disclaimers, limitation of liability, indemnification, and dispute resolution) survive termination.

14. Disclaimers

To the maximum extent permitted by law, the Service and all outputs are provided “AS IS” and “AS AVAILABLE,” without warranties of any kind, whether express, implied, or statutory, including any implied warranties of merchantability, fitness for a particular purpose, title, non-infringement, and any warranties arising from course of dealing or usage of trade. We do not warrant that the Service will be uninterrupted, secure, error-free, or that outputs will be accurate, reliable, undetectable, or fit for any purpose. Some jurisdictions do not allow certain warranty exclusions, 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 StealthZero or its affiliates, officers, employees, agents, suppliers, or licensors be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for any loss of profits, revenue, data, goodwill, or business, or for any academic, professional, reputational, or disciplinary consequence, arising out of or relating to the Service or these Terms, whether based in contract, tort, or any other theory, even if advised of the possibility of such damages.

To the maximum extent permitted by law, our total aggregate liability for all claims arising out of or relating to the Service or these Terms will not exceed the greater of (a) the amounts you paid us for the Service in the 12 months before the event giving rise to the claim, or (b) US$50. These limitations apply even if a limited remedy fails of its essential purpose. Some jurisdictions do not allow certain limitations, so some of the above may not apply to you.

16. Indemnification

You will defend, indemnify, and hold harmless StealthZero and its affiliates, officers, employees, agents, and licensors from and against any claims, damages, liabilities, losses, costs, and expenses (including reasonable legal fees) arising out of or related to your Customer Content, your use of the Service or outputs, your violation of these Terms or any law, or your infringement of any third-party right.

17. Governing law & dispute resolution

These Terms are governed by the laws of [PLACEHOLDER: governing-law jurisdiction], without regard to its conflict-of-laws rules. Subject to the arbitration provision below, the courts located in [PLACEHOLDER: governing-law jurisdiction] will have exclusive jurisdiction.

Binding arbitration. To the fullest extent permitted by law, you and StealthZero agree that any dispute, claim, or controversy arising out of or relating to these Terms or the Service will be resolved by final and binding individual arbitration administered by [PLACEHOLDER: arbitration venue/body] under its then-current rules, rather than in court, except that either party may bring an individual claim in small-claims court or seek injunctive relief for intellectual-property or unauthorized-access matters.

Class-action waiver. To the fullest extent permitted by law, disputes will be brought only in an individual capacity, and not as a plaintiff or class member in any purported class, collective, or representative proceeding. You may have the right to opt out of arbitration by notifying us within 30 days of first accepting these Terms. Where arbitration or this waiver is not enforceable, the disputes will be resolved by the courts identified above. This section does not apply to the extent prohibited by applicable consumer-protection law.

18. Changes to these Terms

We may update these Terms from time to time. If we make material changes, we will provide reasonable notice (for example, by posting the updated Terms with a new effective date or by other reasonable means). Changes are effective when posted unless stated otherwise. Your continued use of the Service after changes take effect means you accept the updated Terms.

19. General

These Terms, together with our Privacy Policy and any plan or feature terms presented to you, are the entire agreement between you and us regarding the Service and supersede prior agreements on that subject. If any provision is found unenforceable, it will be limited or severed to the minimum extent necessary, and the rest remains in effect. Our failure to enforce a provision is not a waiver. You may not assign these Terms without our consent; we may assign them, including in connection with a merger, acquisition, or sale of assets. Nothing in these Terms creates a partnership, agency, or employment relationship.

20. Contact

Questions about these Terms? Contact us at support@stealthzero.ai.