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Terms of Service

These Terms and Conditions (these “Terms”) govern your access to and use of the LangLime web and mobile applications, services, and APIs (collectively, the “Service”) provided by LangLime. By accessing or using the Service, you agree to be bound by these Terms and our Privacy Policy. If you do not agree, you may not access or use the Service.

1. Eligibility

You must be at least 13 years old to use the Service. By agreeing to these Terms, you represent and warrant that you are at least 13. If you are between 13 and the age of majority in your jurisdiction, you may only use the Service under the supervision of a parent or legal guardian who agrees to these Terms on your behalf.

2. Account Registration

  1. Create an Account. To access the features of the Service, you must register for an account by providing a valid email address and creating a password - or using one of the trusted third-party providers (such as Google OAuth). You agree to (a) provide accurate, current, and complete information; (b) maintain and promptly update your account information; and (c) keep your password secure and confidential.
  2. Account Responsibility. You are responsible for all activity that occurs under your account. Notify us immediately of any unauthorized use or breach of security.

3. Subscription Plans & Payments

  1. Subscription Plans. LangLime offers subscription-based access to the Service (the “Subscription”) and an optional one-time lifetime plan for users who provide their own AI API key (the “Lifetime Plan”). Subscription and Lifetime Plan details (features, pricing, billing cycle, and any usage limits) are described in our Pricing section and may change from time to time.

  2. Payment & Billing. By subscribing, you authorize us (or our third-party payment processor) to charge your chosen payment method for all Subscription fees at the start of each billing cycle. You must provide a valid payment method and keep it current.

  3. Free Trial & Cancellation (Subscriptions). If you enroll in a free trial for a Subscription, you must cancel before the end of the trial period to avoid charges. You may cancel your Subscription at any time via your account settings; cancellation takes effect at the end of the current billing period. No refunds are provided for partial billing periods, except as required by law.

  4. Price Changes. We may modify Subscription or Lifetime Plan fees or introduce new fees. We will provide at least 30 days’ notice before Subscription price changes affect you.

  5. Lifetime Plan & BYOK. The Lifetime Plan is a one-time fee that grants you ongoing access to the features described on the Pricing page for as long as we make that plan available and maintain the Service in a commercially reasonable manner. The Lifetime Plan:

    • is paid once and does not auto-renew;
    • does not include any fees or usage charges owed to the third-party AI provider(s) whose API key you connect (you remain responsible for those costs);
    • requires you to maintain a valid AI API key and account with the third-party provider — if your key is invalid, suspended, or rate-limited, some or all features of the Service may not function; and
    • is generally non-refundable, except where a refund is required by applicable law.

    For clarity, “lifetime” refers to the life of the LangLime Service and not your lifetime. We reserve the right to modify or discontinue the Service (in whole or in part) in accordance with these Terms.

4. License & Use of the Service

  1. Limited License. Subject to your compliance with these Terms, LangLime grants you a limited, non‑exclusive, non‑transferable, revocable license to access and use the Service for your personal, non‑commercial use (unless otherwise agreed in writing).
  2. Restrictions. You agree not to:
    • copy, modify, or distribute the Service’s code or content;
    • reverse engineer or attempt to extract the source code;
    • use the Service to develop a competing product;
    • circumvent any technical protection measures or usage limits;
    • use any automated means (such as bots or scripts) to access the Service in a manner that could impair or disrupt our systems; or
    • use the Service in violation of applicable laws or third-party rights, or to generate content that is unlawful, abusive, or otherwise harmful.

5. User Content & API Keys

  1. User Content. You retain ownership of content you upload or generate through the Service (e.g., translations, notes). By submitting User Content, you grant LangLime a worldwide, royalty-free, sublicensable license to host, display, reproduce, and otherwise use it to provide, maintain, and improve the Service.

  2. Lifetime Plan API Keys. If you subscribe to the Lifetime Plan and provide your own AI API key, you retain ownership of that key and your relationship with the AI provider remains separate from LangLime. We store and use your key solely to enable the Service for your account; we will not use it to train our models or share it with third parties except:

    • with subprocessors that help us securely store or transmit the key as part of providing the Service; or
    • where we are legally required to do so.

    You are responsible for configuring any spending limits or safeguards with your AI provider and for all charges incurred through your API key.

6. Intellectual Property

All content and materials on the Service— including trademarks, logos, UI designs, text, graphics, and software— are the property of LangLime or its licensors and are protected by intellectual property laws. Except as expressly licensed herein, no rights are granted to you.

7. Disclaimers & Limitation of Liability

  1. No Warranties. THE SERVICE IS PROVIDED “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED. LangLime DISCLAIMS ALL WARRANTIES, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON‑INFRINGEMENT.
  2. Limitation of Liability. TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT SHALL LangLime BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES, OR LOSS OF PROFITS, REVENUE, DATA, OR USE, ARISING OUT OF OR IN CONNECTION WITH THE SERVICE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. LangLime’S AGGREGATE LIABILITY SHALL NOT EXCEED THE TOTAL AMOUNT PAID BY YOU TO LangLime IN THE SIX (6) MONTHS PRIOR TO THE CLAIM.

8. Indemnification

You agree to indemnify and hold harmless LangLime and its officers, directors, employees, and agents from any claims, liabilities, damages, losses, or expenses (including reasonable attorneys’ fees) arising out of your use of the Service or violation of these Terms.

9. Termination

  1. Termination by You. You may cancel your Subscription at any time. Upon cancellation, your access continues until the end of your billing period.
  2. Termination by LangLime. We may suspend or terminate your account and access to the Service at our discretion for any reason, including breach of these Terms or unlawful conduct, with or without notice. Suspension or degradation of features due to issues with Third-Party Services (for example, if your AI provider suspends your API key) does not constitute termination by LangLime. Sections 5–9 survive termination.

10. Third-Party Services

The Service may integrate with or depend on third-party services, such as AI model providers, authentication providers, or payment processors (“Third-Party Services”). Your use of any Third-Party Services is subject to their own terms and privacy policies, and LangLime is not responsible for their acts or omissions.

We do not control the availability, quality, or performance of Third-Party Services. Features of the Service that rely on Third-Party Services may be modified, suspended, or discontinued if the relevant Third-Party Service is unavailable or if our relationship with that provider changes.

11. Governing Law & Dispute Resolution

These Terms are governed by the laws of the United Kingdom without regard to conflict of law principles.

12. Changes to Terms

We may modify these Terms at any time. We will post the revised Terms with a new Last updated date. Continued use of the Service after changes constitutes acceptance of the updated Terms. If you do not agree, you must stop using the Service.

13. Contact Us

For questions about these Terms, please contact us at:

Email: [email protected]

Thank you for choosing LangLime. We hope you enjoy your journey to confident, conversational fluency!

Last updated: December 07, 2025