End User License Agreement (EULA)

Last Updated: 12 Nov 2025

1. Introduction & Acceptance

This End User License Agreement (“Agreement” or “EULA”) governs your use of the Lingura mobile application (“App”), owned and operated by Jefferson Santos Oliveira (“Company,” “we,” “our,” or “us”).

By downloading, installing, accessing, or using Lingura, you (“User,” “you”) agree to be bound by this Agreement.
 This Agreement is concluded between you and the Company only, not with Apple Inc. (“Apple”) or Google LLC (“Google”), and the Company—not Apple or Google—is solely responsible for the App and its content.

This Agreement may not conflict with the Apple Media Services Terms and Conditions or the Google Play Terms of Service. You acknowledge that you have had the opportunity to review those terms.

If you do not agree to this Agreement, you must not use or access the App.

2. Scope of License

Subject to this Agreement, the Company grants you a limited, non-exclusive, non-transferable, revocable license to install and use Lingura for personal, non-commercial purposes, as permitted by the applicable platform’s usage rules.

  • On Apple devices, this license is limited to Apple-branded products you own or control, and as permitted under the Apple Media Services Terms and Conditions, including use by other accounts associated with you via Family Sharing or volume purchasing.


  • On Android devices, this license is limited to devices running a legitimate copy of the Google Play Store and governed by the Google Play Terms of Service.


The App is licensed, not sold.

3. Ownership & Intellectual Property

All intellectual property rights in Lingura—including software, trademarks, content, stories, and scenarios—belong to the Company or its licensors.
 This Agreement does not transfer ownership to you. You receive only the license described in Section 2.

4. User Obligations & Restrictions

You agree to use Lingura only for lawful purposes and in accordance with this Agreement.

Lingura allows users to exchange letters with one another. You may not use these features—or any part of the App—to create, share, or distribute content involving:

  • Sexual content


  • Non-consensual flirting


  • Harassment or bullying


  • Hate speech or symbols


  • Threats or violent language


  • Spam or fraudulent activity


  • Impersonation


  • Illegal activity of any kind


Violations may result in temporary or permanent account bans.

During a ban, users will lose access to interactive features, including:

  • Creating new stories with AI


  • Creating new scenarios with AI


  • Sending letters to other users


However, banned users will retain access to read existing stories and play previously available scenarios.

5. Data & Privacy

Your use of Lingura is subject to our Privacy Policy, available at http://lingura.app/privacy-policy.
 By using the App, you consent to the collection, use, and processing of your data as described therein.

6. Content & User-Generated Material

Lingura allows users to create and interact with multiple types of content, including letters, AI-generated stories, and AI-generated scenarios.

(a) Letters

Users may write and send letters to other users. You are solely responsible for the content of your letters.
 If another user reports a letter, the reported content may be reviewed by Lingura’s moderation team to determine whether it violates this Agreement.

(b) AI-Generated Stories

Users may prompt Lingura’s AI systems to generate stories. These stories are created by the App’s AI models and remain the property of the Company, even if initiated by the user’s prompt.
 You receive only a personal, non-transferable right to access and read such stories within the App.
 These stories may be accessible to other users.

(c) AI-Generated Scenarios

Users may also prompt AI to create interactive, role-playing “scenarios” featuring one or more characters. These are generated by Lingura’s systems and remain the property of the Company.
 As with stories, users do not acquire ownership rights over AI-generated scenarios.
 These may also be shared or made available to other users.

(d) Moderation and Restrictions

You may not use any of these features—letters, stories, or scenarios—to create or share content that violates the restrictions listed in Section 4.
 Reported content may be reviewed to enforce compliance.
 Violations may lead to temporary or permanent suspension, as described above.

7. In-App Purchases / Subscriptions

Lingura offers optional premium subscriptions and in-app purchases.

All purchases, refunds, subscription management, and cancellations must be handled through the Apple App Store or Google Play Store, depending on where the purchase was made.

Lingura does not directly process or control refunds. Please refer to the App Store or Google Play refund and subscription policies for details.

8. Maintenance and Support

The Company—not Apple or Google—is solely responsible for providing any maintenance and support services for Lingura, as required by law or this Agreement.
 Apple and Google have no obligation whatsoever to furnish any maintenance or support services with respect to the App.

9. Warranty

The Company is solely responsible for any product warranties, whether express or implied by law, to the extent not effectively disclaimed.

If the App fails to conform to any applicable warranty, users may notify Apple or Google, and the platform may refund the purchase price (if any).
 To the maximum extent permitted by law, Apple and Google will have no other warranty obligations for the App. Any other claims or damages arising from failure to meet a warranty are the Company’s sole responsibility.

10. Product Claims

The Company, not Apple or Google, is responsible for addressing any claims related to the App or your possession and/or use of it, including but not limited to:

  • Product liability claims


  • Claims that the App fails to comply with applicable legal or regulatory requirements


  • Claims under consumer protection, privacy, or similar laws


11. Intellectual Property Rights

In the event of any third-party claim that the App or your possession or use of it infringes intellectual property rights, the Company—not Apple or Google—will be solely responsible for investigating, defending, settling, and discharging such claims.

12. Legal Compliance

You represent and warrant that:

  • You are not located in a country subject to a U.S. Government embargo or designated as a “terrorist-supporting” country, and


  • You are not listed on any U.S. Government list of prohibited or restricted parties.


13. Termination

This Agreement remains effective until terminated by you or the Company.

The Company may terminate or suspend your access if you violate this Agreement, particularly provisions in Section 2 (Scope of License) or Section 4 (User Obligations & Restrictions).

Upon termination, your rights to use the App cease immediately, and your account may be disabled.

14. Disclaimer of Warranties

Lingura is provided “as is” and “as available”, without warranties of any kind.
 We do not guarantee uninterrupted service, error-free operation, or compatibility with all devices.
 You use the App at your own risk.

15. Limitation of Liability

To the fullest extent permitted by law, the Company shall not be liable for indirect, incidental, consequential, or punitive damages arising out of your use or inability to use the App.
 Our total liability shall not exceed the amount paid (if any) for the App or services in the preceding twelve (12) months.

16. Governing Law & Jurisdiction

This Agreement shall be governed by and construed in accordance with the laws of Brazil, and any disputes shall be subject to the exclusive jurisdiction of the courts of São Paulo, Brazil.

17. Third-Party Terms of Agreement

You must comply with any applicable third-party terms when using the App, including but not limited to your internet or wireless data service agreements.

Lingura also integrates with third-party services, including:

  • OpenAI (AI text generation)


  • ipInfo (location data services)


  • Amazon Web Services (AWS) (cloud hosting and storage)


Use of these services is subject to their respective terms and privacy policies.

18. Third-Party Beneficiary

You and the Company acknowledge and agree that Apple, Google, and their subsidiaries are third-party beneficiaries of this EULA.
 Upon your acceptance of the EULA, Apple and Google shall have the right (and be deemed to have accepted the right) to enforce this EULA against you as third-party beneficiaries.

19. Changes to the Agreement

We may update or modify this Agreement from time to time. Users may be notified via email and/or in-app notification.
 Continued use of Lingura after such updates constitutes acceptance of the revised terms.

20. Developer Name and Contact Information

Developer: Jefferson Santos Oliveira
 Address: São Paulo, Brazil
 Email: lingura.app+eula@gmail.com
 Website: https://lingura.app

If you have questions, complaints, or claims regarding Lingura, please contact us through one of the above channels.