Privacy Policy

LangLime operates the LangLime web application (the “Service”). This Privacy Policy explains how LangLime collects, uses, discloses, and safeguards your personal information when you visit or use our Service. By accessing or using LangLime, you agree to this Privacy Policy.

1. Information We Collect

1.1 Information You Provide

• Account Information: When you sign up, we collect your email address and password.
• Payment Information: For paid subscriptions, your billing details are handled by our third‑party payment processor (Stripe), such as credit card number, expiration date, and billing address. We do not store this information.
• User-Generated Content: Translations, feedback scores, and any notes or excerpts you save or submit through the app.

1.2 Automatically Collected Information

• Usage Data: Information about your interactions with LangLime (e.g., lessons accessed, time spent, features used).
• Log Data: Crash reports.
• Cookies & Tracking Technologies: We use cookies and similar technologies to analyze trends and administer the Service. You can control cookies via your browser settings.

1.3 Third‑Party Data

• API Keys & Integrations (Lifetime Plan / BYOK): If you choose the Lifetime Plan and provide your own AI API key, we store that key in encrypted form and use it only to enable your chosen model within the app for your account. We do not use your API key to train our models or share it with other customers. We may use trusted subprocessors (for example, our hosting provider or key management tools) to securely store and transmit the key as part of providing the Service.
• Analytics & Advertising Partners: We may receive data from third‑party analytics services (e.g., Google Analytics) to improve our Service.

2. How We Use Your Information

We use collected data to:

1. Provide & Improve the Service: Deliver lessons, feedback, and personalized content; fix bugs; develop new features.
2. Manage Your Account: Authenticate you, process payments, and communicate important notices.
3. Performance & Analytics: Understand usage patterns, improve user experience, and optimize content.
4. Marketing & Communications: With your consent, send promotional emails, updates, newsletters, and survey requests. You can opt out at any time.
5. Security & Compliance: Detect and prevent fraud or malicious activity, and comply with legal obligations.

2A. AI Providers & User Content

When you use AI-powered features in LangLime, we send the necessary text and context (for example, excerpts, your prompts, translations, corrections, and feedback requests) to one or more third-party AI model providers in order to generate responses.

Depending on your plan, those requests may be made:

• through LangLime’s own AI provider accounts; or
• using your own AI API key that you connect to the Service (Lifetime Plan / BYOK).

The AI provider will process this data under its own terms and privacy policy. Where required, we put appropriate data protection agreements in place with these providers and limit what we send to what is needed to provide the feature you requested.

3. Information Sharing & Disclosure

We do not sell or rent personal information. We may share information in the following circumstances:

• Service Providers: Trusted third parties who help us deliver and operate the Service (e.g., payment processors, hosting providers, analytics vendors). They are contractually bound to keep your data secure and confidential.
• Legal Requirements: To comply with laws or respond to lawful requests by public authorities (e.g., court orders).
• Business Transfers: If LangLime undergoes a merger, acquisition, or sale of assets, user information may be transferred. We will notify you via email or a notice on our Service.

4. Cookies & Tracking

We use cookies and similar tracking technologies to:

• Remember your preferences and login sessions.
• Analyze Service performance and usage.

You can manage cookies through your browser settings or use our cookie consent banner to adjust preferences for optional analytics cookies.

5. Data Security

We implement reasonable security measures (encryption in transit and at rest, secure server environments, access controls) to protect your information. However, no method of transmission over the internet or electronic storage is completely secure. We cannot guarantee absolute security.

6. Data Retention

We retain your personal information for as long as your account is active or as needed to provide you the Service, comply with legal obligations, resolve disputes, and enforce agreements.

If you use the Lifetime Plan / BYOK, we retain your AI API key for as long as your account remains active or until you remove or update it in your settings. If you request deletion of your account or remove your key, some or all AI features may no longer function.

7. Your Rights & Choices

Depending on your jurisdiction, you may have the right to:

• Access, Correct, or Delete your personal data.
• Withdraw Consent for marketing communications.
• Opt-Out of certain data collection (e.g., analytics cookies).

To exercise any of these rights, please contact us at [email protected]. We will respond within applicable legal timeframes.

8. Children’s Privacy

LangLime is not intended for children under 13. We do not knowingly collect personal data from children under 13. If you become aware that a child under 13 has provided us with personal data, please contact us and we will promptly delete such data.

9. International Transfers

LangLime is based in the United Kingdom, and your data may be transferred to and processed in countries other than your own (for example, where our hosting providers, analytics providers, or AI model providers are located). We take steps to ensure such transfers comply with legal requirements and protect your privacy, such as using standard contractual clauses where appropriate.

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will post the revised version and update the Last updated date. Your continued use of the Service after changes indicates your acceptance of the new policy.

11. Contact Us

If you have questions or concerns about this Privacy Policy, please contact us at:

Email: [email protected]

Thank you for trusting LangLime with your language learning journey!