Terms of Service

Welcome to Ritsu. These Terms of Service (“Terms”) form a binding agreement between you (“you”, “your”, “User”) and the independent service known as Ritsu, operated by [TBD — Legal name pending] as an individual (“Ritsu”, “we”, “us”, “our”).

By creating an account, accessing, or using any part of Ritsu, you agree to these Terms. If you do not agree, do not use the Service.

You are signing this agreement in your personal capacity. If you are using Ritsu on behalf of a business or organization, you represent that you have authority to bind that entity, and “you” refers to both you personally and that entity.

Ritsu is an AI-powered learning platform that helps users study, understand, and retain knowledge from their own source materials (documents, videos, notes). Ritsu is an independent service operated by an individual, not a company. This means:

• Your legal counterparty is [TBD — Legal name pending], a natural person.
• Payment processing is handled by our Merchant of Record, Lemon Squeezy Inc. (a Delaware, USA corporation). See Section 7.
• We operate globally but use United States (Delaware) law for clarity and consistency with our payment processor.

Questions about Ritsu can be directed to legal@ritsu.ai.

To use Ritsu, you must meet all of the following:

1. Be at least 16 years old, OR be at least 13 years old with verifiable parental or guardian consent where applicable law permits (e.g., under COPPA in the United States). We do not knowingly collect information from users under 13 without such consent.
2. Have the legal capacity to enter into a binding contract in your jurisdiction.
3. Not be barred from using the Service under applicable law (e.g., trade sanctions).
4. Provide accurate registration information.

If you are under 16 and located in the European Economic Area, United Kingdom, or another jurisdiction that requires parental consent for data processing involving minors (GDPR Art. 8), a parent or legal guardian must provide consent on your behalf and accept these Terms.

We reserve the right to request age verification at any time and to suspend or terminate accounts that do not meet these requirements.

4.1 Registration

You must create an account to use most features. You agree to provide accurate information and keep it up to date. You are responsible for all activity under your account.

4.2 Security

Keep your password confidential. Notify us at security@ritsu.ai immediately if you suspect unauthorized access. We are not liable for losses caused by your failure to maintain account security.

4.3 One account per person

Accounts are for individual use. You may not share accounts, transfer accounts, or create multiple accounts to circumvent quotas, tier limits, free-trial restrictions, or bans.

4.4 Authentication

We use Supabase Auth for account management. By registering, you also accept Supabase’s processing of your authentication data as described in our Privacy Policy.

Subject to your compliance with these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to access and use Ritsu for your personal, non-commercial educational purposes.

This license does not include the right to:

• Resell, rent, or sublicense the Service
• Use the Service to build a competing product or train competing AI models
• Extract, scrape, or systematically download content or outputs
• Reverse-engineer, decompile, or otherwise attempt to derive source code
• Remove or modify any proprietary notices

6.1 Tiers

Ritsu offers free and paid tiers (Plus, Pro, Ultra). Current pricing and features are at /pricing. We may change pricing or features with at least 30 days’ notice to active subscribers.

6.2 Credits

Ritsu uses a credit system. Each paid action consumes credits. Credits are:

• Non-transferable between accounts
• Non-refundable once consumed (see Section 8)
• Subject to monthly reset rules as described on the pricing page (unused credits may expire at the end of each billing cycle)
• Not redeemable for cash

6.3 Free tier

Free-tier usage is provided “as is” with no guarantees of availability, capacity, or feature completeness. We may change or remove free-tier features at any time.

6.4 Trials and promotions

Free trials or promotional credits may have additional terms disclosed at the time of offer. Abuse of trials (e.g., creating multiple accounts) may result in suspension.

7.1 Lemon Squeezy’s role

7.2 Subscription renewals

Paid subscriptions auto-renew at the end of each billing cycle (monthly or annual) until you cancel. You can cancel at any time via your account dashboard or by contacting billing@ritsu.ai. Cancellation takes effect at the end of the current billing cycle; you keep access until then.

7.3 Taxes and currency

Prices displayed on /pricing are exclusive of applicable taxes unless stated. Lemon Squeezy will add local sales tax, VAT, or GST at checkout based on your billing address. Currency conversions are handled by Lemon Squeezy at their prevailing rate.

7.4 Failed payments

If payment fails, we may suspend paid features until payment is resolved. Repeated failed payments may result in downgrade to free tier or account termination.

Full refund terms are at /refund. In summary:

• 14-day refund window from your first charge on any new subscription (monthly or annual).
• Credit packs (one-time purchases) are refundable within 14 days only if credits are untouched. Consumed credits are non-refundable.
• Annual subscriptions after 14 days: No refund after the 14-day window for annual subscriptions.
• Cause-based termination (fraud, ToS violation): no refund.
• Refunds are processed by Lemon Squeezy and typically arrive within 5-10 business days.

You agree not to use Ritsu to:

9.1 Upload unlawful or infringing content

• Content that infringes copyright, trademark, trade secret, or other IP rights. See our DMCA Policy for reporting.
• Content that is defamatory, obscene, pornographic, or otherwise illegal in the jurisdiction where you or we operate.
• Personal information of others without consent.
• Content that constitutes child sexual abuse material (CSAM) — this triggers immediate account termination and reporting to authorities.

9.2 Attack, abuse, or defraud the Service

• Reverse-engineer, decompile, or disassemble any part of the Service.
• Use bots, scrapers, or automated means to access the Service, extract outputs, farm credits, or circumvent rate limits.
• Bypass or attempt to bypass paywalls, tier limits, or credit quotas.
• Transmit malware, viruses, or harmful code.
• Conduct DoS, DDoS, or other availability attacks.
• Share, sell, or distribute your account credentials.

9.3 Use Ritsu to cheat, plagiarize, or misrepresent

• Submit Ritsu-generated content as your own original work in academic, professional, or credentialing contexts where such use violates applicable rules (e.g., Honor Codes, academic integrity policies, professional licensing standards). You are solely responsible for knowing the rules that apply to you.
• Use Ritsu to take timed exams, standardized tests, or assessments where external aid is prohibited.
• Misrepresent the source or authorship of AI-generated content in a way that deceives others.

9.4 Abuse other users

• Harass, threaten, or impersonate any person.
• Attempt to access other users’ accounts or data.
• Exploit bugs, vulnerabilities, or undisclosed features to gain advantage.

We reserve the right to investigate, suspend, or terminate accounts that violate this section, with or without notice depending on severity. Repeated or serious violations may also result in legal action.

10.1 Your content, your ownership

You retain ownership of all content you upload to Ritsu (“User Content”), including documents, notes, transcripts, and any materials you input. We claim no ownership of User Content.

10.2 License to Ritsu

To operate the Service, you grant Ritsu a limited, non-exclusive, worldwide, royalty-free license to host, store, reproduce, modify, and transmit your User Content solely for the purpose of providing the Service to you. This license ends when you delete the content or your account, subject to our backup retention schedule in the Privacy Policy.

10.3 No AI training on your content

10.4 Public shares

If you use Ritsu’s session-sharing feature to make a session public or shareable via link, you grant the viewers of that share a license to view and interact with the shared content. Public shares are visible to anyone with the link; do not share sensitive or confidential material this way.

10.5 Feedback

If you send us feedback, suggestions, or bug reports, you grant us a perpetual, royalty-free license to use that feedback without compensation or attribution. We will not publicly identify you as the source without your consent.

Ritsu uses large language models (currently Google Gemini, with OpenRouter as fallback) to generate study aids, explanations, quizzes, summaries, and other content based on your inputs (“AI Outputs”).

AI Outputs are provided for educational assistance only. They must not be relied upon for:

• Medical diagnosis, treatment, or advice — consult a licensed medical professional
• Legal advice or interpretation — consult a licensed attorney
• Financial, tax, or investment advice — consult a licensed advisor
• Safety-critical decisions — engineering, aviation, chemistry, etc.
• Real-world actions with legal, financial, or safety consequences

You use AI Outputs at your own risk. Ritsu disclaims all liability for decisions you make based on AI Outputs, to the maximum extent permitted by law.

Subject to your rights in your User Content, Ritsu and its licensors retain all rights, title, and interest in:

• The Ritsu platform, software, design, user interface, and code
• The “Ritsu” name, logo, and associated branding
• Aggregated, anonymized usage data and analytics (we may use this to improve the Service)
• Content, templates, prompts, and educational materials we provide

No rights are granted to you in these assets except the limited license to use the Service as described in Section 5.

13.1 Best-effort availability

We provide Ritsu on a commercially reasonable best-effort basis. We do not guarantee specific uptime, availability, or response time for the free tier.

13.2 Paid tier availability

For paid tiers, we target high availability but do not promise a specific SLA percentage during our solo-operator phase. We will notify subscribers in advance of planned maintenance windows longer than 30 minutes when reasonably possible.

13.3 Modifications and discontinuation

We may modify, suspend, or discontinue any feature, model, or component of the Service at any time, with or without notice. For material removals affecting paid tiers, we will provide at least 30 days’ notice and a prorated refund if applicable.

13.4 Third-party dependencies

Ritsu relies on third-party services (Google Gemini, OpenRouter, Cloudflare R2, Supabase, Lemon Squeezy, Vercel). Outages or changes to those services may affect Ritsu’s availability. We are not liable for third-party outages.

14.1 Termination by you

You may stop using Ritsu at any time. You may delete your account via your dashboard or by emailing privacy@ritsu.ai. Account deletion processes are described in the Privacy Policy.

14.2 Termination by us

We may suspend or terminate your account at any time, with or without notice, if:

• You violate these Terms, our Acceptable Use rules, or our DMCA Policy
• You engage in fraud, chargebacks, or payment disputes we judge in bad faith
• You fail to pay subscription fees
• Your account is inactive for 24+ months (we will notify before deletion)
• We are required to do so by law or valid legal process
• We discontinue the Service entirely

14.3 Effect of termination

On termination:

• Your access ends immediately
• Your User Content is retained per the Privacy Policy retention schedule and then deleted
• Sections that by their nature survive (IP rights, warranty disclaimers, liability limits, dispute resolution, these survival terms) remain in effect

To the maximum extent permitted by applicable law, Ritsu disclaims all warranties, express or implied, including:

• Merchantability
• Fitness for a particular purpose
• Non-infringement
• Accuracy, completeness, or timeliness of AI Outputs or content
• Uninterrupted, secure, or error-free operation
• That defects will be corrected

No advice or information obtained from Ritsu creates any warranty not expressly stated in these Terms.

Some jurisdictions do not allow the exclusion of certain warranties. In those jurisdictions, disclaimers apply to the maximum extent permitted.

This cap applies regardless of the theory of liability (contract, tort, statute, or otherwise) and survives termination.

Jurisdictional carve-out: Some jurisdictions do not allow limitation of liability for certain damages (e.g., gross negligence, intentional misconduct). These limits apply only to the maximum extent permitted.

You agree to defend, indemnify, and hold harmless Ritsu, [TBD — Legal name pending], and our affiliates from any claim, demand, damage, loss, or expense (including reasonable attorneys’ fees) arising out of:

• Your User Content
• Your use or misuse of the Service
• Your violation of these Terms
• Your violation of any third-party right (including IP, privacy, or publicity)
• Your violation of applicable law

We may, at our option, assume exclusive defense and control of any matter subject to indemnification by you. You will cooperate in the defense.

18.1 Governing law

These Terms and any dispute arising out of or related to them or the Service are governed by the laws of the State of Delaware, United States, without regard to conflict-of-law principles. The United Nations Convention on Contracts for the International Sale of Goods does not apply.

18.2 Binding arbitration (with opt-out)

Any dispute, claim, or controversy arising out of or relating to these Terms or the Service will be resolved by binding arbitration, administered by JAMS (Judicial Arbitration and Mediation Services) under its Streamlined Arbitration Rules then in effect. Arbitration will be held in Delaware, USA, OR by video conference at the election of either party. Judgment on the arbitration award may be entered in any court of competent jurisdiction.

Opt-out: You may opt out of this arbitration clause by sending written notice to legal@ritsu.ai within 30 days of first accepting these Terms. If you opt out, any dispute will instead be resolved in the state or federal courts located in Delaware, USA.

18.3 Class action waiver

You and Ritsu agree that disputes will be resolved on an individual basis only. Neither party may join, consolidate, or bring claims as part of a class, representative, collective, or mass action. If a court finds this waiver unenforceable, the rest of Section 18.2 will be severed and disputes will proceed in Delaware courts without class action rights.

18.4 Small claims

Either party may bring claims in small claims court where applicable and within its jurisdiction without triggering arbitration.

18.5 Informal resolution first

Before filing arbitration or litigation, you agree to contact us at legal@ritsu.ai and describe the dispute in writing. We will attempt to resolve it informally within 30 days. This requirement does not apply to claims involving IP, unauthorized access, or urgent injunctive relief.

18.6 Statute of limitations

Any claim must be filed within one year of the event giving rise to the claim, or it is permanently barred.

We may update these Terms from time to time. When we make material changes, we will:

• Update the “Last Updated” date at the top
• Send you an email notification to your registered address (for material changes affecting paid users)
• Post an in-app banner for at least 14 days

Continued use of the Service after changes take effect constitutes acceptance. If you disagree with changes, stop using the Service and close your account before the effective date. We will not retroactively apply changes to events that occurred before the effective date.

20.1 Entire agreement

These Terms, together with our Privacy Policy, Refund Policy, DMCA Policy, Security Policy, and any tier-specific agreements, constitute the entire agreement between you and Ritsu regarding the Service.

20.2 Severability

If any provision is held invalid or unenforceable, the rest of these Terms will remain in effect. The invalid provision will be modified to the minimum extent needed to make it enforceable.

20.3 No waiver

Our failure to enforce any provision is not a waiver of our right to enforce it later.

20.4 Assignment

You may not assign your rights or obligations under these Terms without our prior written consent. We may assign these Terms to any successor in interest (e.g., if Ritsu is later incorporated into an entity, acquired, or transferred).

20.5 Force majeure

Neither party is liable for delays or failures caused by events beyond reasonable control: natural disasters, war, terrorism, pandemics, government action, internet outages, or third-party service failures.

20.6 Relationship

No partnership, joint venture, employment, or agency relationship is created by these Terms.

20.7 Language

These Terms are written in English. Translations are provided for convenience; in case of conflict, the English version controls.

20.8 Notices

Notices to you may be sent to your registered email. Notices to Ritsu must be sent to legal@ritsu.ai with copy to [TBD — Contact address pending].

• General / legal: legal@ritsu.ai
• Privacy: privacy@ritsu.ai
• Security / vulnerability disclosure: security@ritsu.ai
• Copyright / DMCA: dmca@ritsu.ai
• Billing / refunds: billing@ritsu.ai
• Support: via the in-app help or billing@ritsu.ai

Legal notice address: [TBD — Contact address pending]

Thank you for using Ritsu. Learn well.