Terms of Use (End-User License Agreement)

Last Updated: 31 May 2025

1. Acceptance of Terms

Welcome to PekiBook! These Terms of Use (“Terms”) govern your access to and use of the PekiBook mobile application and website (collectively, the “Service”). By downloading, accessing, or using PekiBook, you agree to be bound by these Terms. If you do not agree, you must not use the Service. These Terms form a binding legal agreement between you (the user) and Erenay Kaya (“we,” “us,” or “Developer”), the creator and provider of PekiBook.

2. Eligibility and Age Restrictions

You must be at least 13 years old (or the minimum legal age in your country to form a binding contract) to use PekiBook. If you are between 13 and 18 (or 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 be bound by these Terms. The Service is not directed to children under 13, and we do not knowingly allow such individuals to create accounts or provide personal data. You represent that you are not barred from using the Service under any applicable laws – for example, you are not on any trade sanctions lists or prohibited from using the Service by local regulations.

3. Accounts and Security

To use certain features, you may need to create an account. You agree to provide accurate, current information when creating an account and to keep it updated. You are responsible for maintaining the confidentiality of your login credentials and for all activities that occur under your account. Please do not share your account credentials with others. If you suspect any unauthorized use of your account, you must notify us immediately. We are not liable for any loss or damage arising from your failure to safeguard your account. We may suspend or terminate your account if we believe you have violated these Terms or engaged in fraudulent or unlawful behavior.

4. Limited License to Use the Service

Subject to your compliance with these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to download and use the PekiBook app and access the content on our website for your personal, non-commercial educational use. This license is provided solely for you to use and enjoy PekiBook’s features in accordance with these Terms. You may not distribute, sell, resell, or sublicense our app or any content provided through the Service. You also may not copy or reverse engineer the app, nor attempt to extract source code or create derivative works, except to the extent that such activity is expressly permitted by law. All rights not expressly granted to you are reserved by the Developer.

5. Ownership and Intellectual Property

All content, software, and materials made available through PekiBook – including text, lessons, images, graphics, logos, trademarks, audio, videos, and the design of the app – are owned by us or our licensors and are protected by copyright, trademark, and other intellectual property laws. PekiBook and our logos are trademarks of Erenay Kaya. You agree not to remove, alter, or obscure any copyright, trademark, or other proprietary rights notices on the Service.

If you submit any content or feedback to us (for example, suggestions to improve PekiBook, or any text you input for AI coaching), you retain ownership of your original content. However, you grant us a worldwide, royalty-free, sublicensable license to use, reproduce, display, and adapt that content solely for the purpose of operating and improving the Service. For example, if you suggest a new feature, we can use and implement your idea without owing you compensation. You promise that any content you submit is your own or you have permission to submit it, and that it does not violate any law or anyone’s rights.

If you believe that any content in PekiBook infringes your intellectual property rights, please contact us at erenay@pekibook.com with details. We will promptly review and, if necessary, remove the allegedly infringing material in accordance with applicable intellectual property laws (such as the DMCA for U.S. copyrights).

6. Acceptable Use Policy

You agree to use PekiBook in a lawful and respectful manner. You MUST NOT:

Use the Service for any illegal purpose or in violation of any local, state, national, or international law or regulation.
Post or transmit any content that is defamatory, fraudulent, obscene, harassing, threatening, or that infringes on others’ rights (including intellectual property, privacy, or publicity rights).
Attempt to obtain unauthorized access to the Service or another user’s account, or circumvent any security measures.
Use any automated means (such as bots, scrapers, or spiders) to access or collect data from the Service without our permission.
Deliberately input any content into the Service’s AI features that is prohibited (for example, content that is hateful, sexually explicit, promotes violence, or personal data that you do not have the right to share).
Use the Service to create or distribute malicious code, to stalk or harass others, or to engage in any activity that interferes with or disrupts the Service’s functioning or any servers or networks connected to the Service.
Misrepresent your identity or affiliation, or impersonate any person or entity, or otherwise engage in any fraudulent or misleading conduct.

Violation of this Acceptable Use Policy may result in suspension or termination of your account and access, and may also subject you to legal consequences. We reserve the right to monitor interactions on the Service (including AI chat sessions) and remove or block any content or users we find to be in violation of these rules.

7. Payments, Subscriptions, and Refunds

Premium Subscription: PekiBook offers certain premium features (such as offline access or ad-free learning) available through a paid subscription (“PekiBook Premium”). If you choose to subscribe, the fee and billing period will be clearly disclosed in the app at the time of purchase. Subscriptions purchased through the Apple App Store or Google Play Store will be billed via those platforms, and subject to their payment terms. Your subscription will automatically renew at the end of each billing cycle (e.g., monthly or annually) unless you cancel it at least 24 hours before the end of the current period. The renewal will charge the same credit card or payment method you originally used, at the then-current subscription price, unless we inform you of a change in price (in which case you’ll have an opportunity to cancel).

Cancellation: You can cancel your PekiBook Premium subscription at any time. For Apple App Store subscriptions, you can cancel by visiting your Apple ID Subscriptions settings; for Google Play, you can cancel via the Google Play subscription management. When you cancel, you will retain access to premium features until the end of the period you’ve already paid for, but no further charges will occur afterward. We do not provide refunds or credits for partial subscription periods or unused features, except where required by law or expressly permitted by these Terms. For example, if you cancel in the middle of a month, you will not receive a prorated refund for the remaining days. All purchases of digital content (including subscriptions and any one-time in-app purchases) are final and non-refundable to the maximum extent allowed by applicable law. If you believe exceptional circumstances warrant a refund, you may contact us at our support email, but we cannot guarantee any refund outside what platform policies or consumer laws mandate.

Free Trials and Promotions: If we offer a free trial or introductory offer for PekiBook Premium, details of the trial (such as duration and what features are included) will be provided. After the trial period ends, you will be charged the regular subscription price unless you cancel before the trial ends. Each user is limited to one free trial unless otherwise stated. If we suspect abuse of free trial offers (such as creating multiple accounts to get trial access repeatedly), we reserve the right to terminate or not honor the trial.

Store Policies: Purchases made through the Apple App Store or Google Play are also subject to Apple’s Media Services Terms and Google Play’s terms of service, respectively. These platforms may have their own refund policiesor conditions under which refunds are granted. For instance, Apple may allow you to request a refund for certain purchases via Apple customer support under specific circumstances, and Google Play generally offers a short window for cancellations. Any billing disputes or refund requests for in-app purchases should be initiated through the respective platform, as we are limited by their systems in processing payments and refunds. We comply with all applicable consumer protection laws, so if you reside in a region that provides a mandatory refund or cancellation right (for example, certain EU laws on digital content), we will honor those rights.

8. Termination of Use

You may stop using PekiBook and, if applicable, delete your account at any time. We also reserve the right to suspend or terminate your access to the Service (or any part of it) at any time with or without notice if, in our sole discretion, we determine that (a) you have violated these Terms or any applicable law; (b) you create risk or possible legal exposure for us; or (c) we decide to discontinue the Service (in whole or in part). In the event of any termination or suspension, you will not be entitled to any refund of fees you’ve paid (unless required by law), and we may immediately deactivate or delete your account and all associated data and files. We shall not be liable to you or any third party for terminating your access to the Service.

Sections of these Terms that by their nature should survive termination (such as ownership of content, disclaimers, indemnities, and limitations of liability) will continue to apply even after your use of the Service ends.

9. AI-Powered Features and Content Disclaimer

AI Coach and Content: PekiBook includes AI-powered language coaching features (for example, the “Peki” AI chat companion that can engage in conversations, provide corrections, or answer questions). You understand that AI-generated content is inherently unpredictable and may occasionally produce incorrect, misleading, or inappropriate responses. We do not guarantee the accuracy, quality, or appropriateness of any content generated by the AI. The AI might sometimes misunderstand your input or context, leading to irrelevant or erroneous outputs. All AI responses should be taken as informational or for practice purposes only, not as professional advice. For example, if the AI provides a translation or explanation, you should verify critical information independently. Do not rely on AI outputs for important decisions or in sensitive situations.

User Responsibility: By using the AI features, you agree to use them responsibly. Do not enter personal sensitive information (such as personal health details, financial information, or unique identifiers) into the AI chat. While we have content filters and guidelines in place, the AI may inadvertently generate content that is offensive or that you may find unsuitable. If you see any output that is harmful or violates our Acceptable Use Policy (e.g., hate speech or explicit material), please discontinue that conversation and report the issue to us.

No Liability for AI Content: You assume all risk for any actions you take based on AI-generated content. We provide the AI features on an “as-is” basis without warranties. To the fullest extent allowed by law, we disclaim any liability for any harm or losses arising from your use of or reliance on AI-generated responses. This includes any claims that the AI’s content was incorrect, offensive, defamatory, or otherwise damaging. You agree that your sole remedy for dissatisfaction with the AI features is to stop using those features.

10. Third-Party Services and Links

PekiBook may integrate or use third-party services to function. For example, we might use cloud storage providers, analytics services, or the OpenAI API (for AI functionalities) as part of delivering the Service. We may also present links or references to third-party websites or content (such as external dictionaries, language resources, or social media pages). These third-party services and links are not under our control, and we are not responsible for their content, privacy practices, or performance. We do not guarantee that any third-party service will function without error or interruption, and use of those services may be governed by the third party’s terms of use and privacy policy.

If you access a third-party website or service from PekiBook, you do so at your own risk. Any dealings you have with third parties found through PekiBook are between you and the third party, and you agree that we are not liable for any loss or claim you may have against a third party.

Additionally, if PekiBook uses any third-party software or APIs (such as the OpenAI API for AI responses), you agree to comply with any applicable usage policies of those third parties. For instance, using the AI feature in PekiBook means you will not attempt to use it in ways that violate OpenAI’s content rules (e.g., no generation of disallowed content as described in our Acceptable Use Policy). We reserve the right to disable or limit features that rely on third-party services if those services become unavailable or if you violate relevant third-party terms.

11. Disclaimer of Warranties

PekiBook is provided “AS IS” and “AS AVAILABLE.” To the maximum extent permitted by law, the Developer (Erenay Kaya) disclaims all warranties and conditions, whether express, implied, or statutory, with respect to the Service. This includes, but is not limited to, implied warranties of merchantability, fitness for a particular purpose, non-infringement, and any warranties that may arise from course of dealing or usage of trade. We do not warrant that the Service will meet your requirements or expectations, that it will be uninterrupted, timely, secure, or error-free, or that any content (including lesson content or AI-generated responses) is accurate or reliable.

No advice or information, whether oral or written, obtained by you from PekiBook or the Developer shall create any warranty not expressly stated in these Terms. While we endeavor to correct any issues brought to our attention, you use PekiBook at your own risk. For example, we do not warrant that using PekiBook will definitively improve your language skills or that any errors in the app will be corrected immediately.

Some jurisdictions do not allow the exclusion of certain warranties, so some of the above disclaimers may not apply to you. In those jurisdictions, our warranties are limited to the minimum scope permitted by law. PekiBook is an educational and informational application; it does not come with any guarantee of specific results.

12. Limitation of Liability

To the fullest extent permitted by applicable law, in no event will the Developer (Erenay Kaya) or any of our employees, partners, licensors, or affiliates be liable for: (a) any indirect, incidental, special, consequential, or punitive damages; or (b) any loss of profits, revenue, data, goodwill, or other intangible losses, arising out of or related to your use of (or inability to use) PekiBook, regardless of the theory of liability (contract, tort, negligence, strict liability, etc.), and even if we have been advised of the possibility of such damages. This means that, for example, we are not liable for the cost of any substitute language learning services, downtime, loss of data or content (such as your quiz results or chat history), or claims by any third parties arising from your use of PekiBook.

Monetary Cap: In addition, to the extent permitted by law, our total cumulative liability to you for all claims arising out of or relating to these Terms or the use of the Service will not exceed the amount (if any) that you paid to us for the Service in the 12 months immediately preceding the event giving rise to the liability. If you have not paid us any amount (for example, if you only used the free version), our liability to you shall be zero.

Exceptions: We do not exclude or limit our liability to you where it would be illegal to do so. In particular, nothing in these Terms shall affect any statutory liability or remedies that cannot be excluded or limited under law. For example, some laws do not allow limitation of liability for personal injury or death caused by negligence, or for gross negligence or intentional misconduct. However, in any case where we are legally liable, our liability is limited to the fullest extent permitted by law.

You acknowledge that PekiBook is an educational service and that the fees (if any) charged are relatively small in scope; these limitations reflect a fair allocation of risk between you and us. Your sole and exclusive remedy if you are dissatisfied with the Service or experience any issue is to discontinue use of PekiBook.

13. Indemnification

You agree to indemnify, defend, and hold harmless the Developer (Erenay Kaya) and our affiliates, employees, contractors, agents, and partners from and against any and all claims, liabilities, damages, losses, and expenses (including reasonable attorneys’ fees and costs) that arise out of or relate to: (1) your use of the Service or any content obtained through it; (2) any content you submit or upload through PekiBook (for example, any text or data you input into the app, including AI chat inputs, that causes harm); (3) your breach or violation of these Terms or any applicable law or regulation; or (4) your infringement of any rights of another person or entity.

This means that if a third party sues us because of something you did – for instance, if you use PekiBook to violate someone’s rights or break the law, or if your data inputs to the AI cause a legal issue – you will cover all of our costs and damages. We reserve the right to assume the exclusive defense and control of any matter otherwise subject to indemnification by you (at your expense), and you agree to cooperate with our defense of such claim. You will not settle any such claim without our prior written consent, which we will not unreasonably withhold.

14. Governing Law and Dispute Resolution

Governing Law: These Terms and any dispute or claim arising out of or related to them or the Service shall be governed by the laws of the Republic of Turkey, without regard to its conflict of laws principles, unless the laws of your jurisdiction mandate that another region’s laws (such as your country of residence’s consumer protection laws) cannot be waived. We are providing the Service from Turkey, and our business operations are based there. However, we do not seek to deprive you of the protections of the laws of your home country if those are legally required.

Jurisdiction: Except where prohibited by applicable law, you and we agree that any legal proceedings (that are not resolved by arbitration or other informal resolution) will be brought in the courts of Ankara, Turkey, and each party submits to the exclusive jurisdiction of such courts. You waive any objection to jurisdiction or venue in such courts, including any claim that such action has been brought in an inconvenient forum. If you are a consumer residing outside of Turkey, you may also have the right to bring proceedings in your country of residence under that country’s laws if applicable law so requires.

Dispute Resolution and Arbitration (if applicable): At this time, we do not mandate arbitration or a class action waiver in these Terms; however, we encourage you to contact us first to resolve any issue informally. We are open to discussing any concerns and will attempt to resolve disputes in good faith. We reserve the right to introduce an arbitration agreement in future updates to these Terms, in compliance with applicable laws and platform policies, but any such change will be communicated and will not apply retroactively without your consent.

Class Action Waiver: To the extent permitted by law, you and the Developer agree that each may bring claims against the other only in an individual capacity and not as a plaintiff or class member in any purported class or representative proceeding. (This class action waiver does not apply where prohibited by law, and if you are in a jurisdiction that does not allow pre-dispute class action waivers, this paragraph may not apply to you.)

Consumers in the EEA/UK: Nothing in this section limits your rights as a consumer to rely on mandatory provisions of local law or to pursue legal action in your local courts as permitted by EU regulation.

15. Changes to These Terms

We may update or modify these Terms from time to time (for example, to reflect changes in our Service or for legal reasons). If we make material changes, we will notify users by posting the updated Terms on our website and/or through an in-app notification, and updating the “Effective Date” at the top. In some cases, we might also notify you via email or other communication. Continued use of PekiBook after the effective date of the updated Terms constitutes your acceptance of the changes. If you do not agree to the revised Terms, you must stop using the Service before the changes take effect and, if applicable, cancel any subscriptions or delete your account.

We encourage you to review the Terms periodically. Any earlier version of Terms will be superseded by the new Terms unless explicitly stated otherwise. If you have any questions about the changes, please contact us for clarification.

16. Contact Information and Notices

Developer Contact: PekiBook is developed and operated by Erenay Kaya. If you have any questions, concerns, or complaints about these Terms or the Service, or if you need to contact us for any reason, you can reach us at:

Email: erenay@pekibook.com
Mailing Address: Çankaya, Ankara 06530, Turkey

We will respond to customer inquiries and legal notices as promptly as feasible. For purposes of any written notice required under these Terms, an email to the address you have on file with us and an email to erenay@pekibook.com(in the case of notice to us) shall constitute written notice.

Apple App Store Users: In accordance with Apple’s requirements, we note that you can direct any end-user questions, complaints, or claims with respect to the iOS version of PekiBook to the contact information above (Apple is not responsible for addressing such issues). Apple and Apple’s subsidiaries shall have the right (and will be deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary.

All communications from us to you (including notices, legal communications, and disclosures) may be sent electronically (for example, via in-app notification, email, or by posting on our site), and you agree that such communications satisfy any legal requirement that such communications be in writing.

17. Additional Terms for Apple iOS and Google Play Store Users

(The following provisions apply to you if you downloaded PekiBook through the Apple App Store or Google Play Store. These terms are required by Apple’s and Google’s policies and are intended to clarify the relationship between you, the Developer, and the platform providers.)

Acknowledgment: You and we acknowledge that these Terms are concluded between you and the Developer (Erenay Kaya) only, and not with Apple or Google. Apple and Google are not responsible for PekiBook and its content.
Scope of License: The license granted to you to use PekiBook under these Terms is a non-transferable license to use the app on any Apple-branded products that you own or control, and as permitted by the App Store Terms of Service, or, for Google Play, on any Android device pursuant to Google Play’s terms. The App Store platforms may also allow you to access the app on other devices via family sharing, etc., per their rules.
Maintenance and Support: The Developer is solely responsible for providing any maintenance and support services for PekiBook. Apple and Google have no obligation to furnish any maintenance or support for the app. If you have any issues or need support, please contact us (not Apple/Google) using the contact information above.
Warranty: To the extent any warranty is legally required and not effectively disclaimed in these Terms, the Developer is solely responsible for such warranty. In the event the app fails to conform to any applicable warranty, you may notify Apple (for iOS downloads), and Apple will refund you the purchase price (if any) for the app; to the maximum extent permitted by law, Apple will have no other warranty obligation with respect to the app. (For clarity, we have already disclaimed all warranties above, and any claims, losses, or liabilities due to a failure to meet a warranty would be our responsibility, not Apple’s.) Google has no warranty obligations whatsoever for the app.
Product Claims: We, not Apple or Google, are responsible for addressing any claims by you or a third party relating to PekiBook or your possession and/or use of PekiBook. This includes, for example: (i) product-liability claims; (ii) any claim that the app fails to conform to any applicable legal or regulatory requirement; (iii) claims arising under consumer protection or similar legislation. Apple and Google are not responsible for such claims.
Intellectual Property Rights: If a third party claims that the PekiBook app (or your use of it) infringes their intellectual property rights, the Developer (not Apple or Google) will be solely responsible for the investigation, defense, settlement, and discharge of any such infringement claim You must notify us immediately if any such claim arises.
Legal Compliance: You represent and warrant that (i) you are not located in a country that is subject to a U.S. Government embargo, or that has been designated by the U.S. Government as a “terrorist supporting” country; and (ii) you are not listed on any U.S. Government list of prohibited or restricted parties. (This is a requirement for apps distributed on U.S. platforms like Apple’s App Store.) You also agree to comply with all local laws that apply to you when using the app.
Third-Party Terms of Agreement: You must comply with any applicable third-party terms of agreement when using PekiBook. For example, if PekiBook requires an internet connection, you must abide by the terms of your wireless data service agreement. Likewise, your use of certain features (like AI services, as noted above) may be subject to third-party terms which you also agree to follow.
Third-Party Beneficiary: You acknowledge and agree that Apple, and Apple’s subsidiaries (for iOS users), and Google (for Android users), are third-party beneficiaries of these Terms. This means that Apple and/or Google have the right to enforce these Terms against you as a third-party beneficiary. Upon your acceptance of these Terms, Apple shall have the right (and will be deemed to have accepted the right) to enforce the Terms against you as a third-party beneficiary (similarly, Google has that right, even if not explicitly stated by Google’s policies).

Terms of Use (End-User License Agreement)​