Terms and Conditions

Effective Date: November 9, 2026
Last Updated: November 9, 2026

Welcome to All English Grammar Book ("the App"), provided by ni18 ("we", "us", or "our"). By downloading, installing, accessing, or using this application, you agree to be bound by these Terms and Conditions ("Terms"). If you do not agree to these Terms, please do not use the App.

1. Description of Service

All English Grammar Book is an educational mobile application designed to assist learners in studying and mastering English grammar concepts through structured lessons, practice exercises, quizzes, glossaries, and offline learning materials.

2. License and Intellectual Property

All content within the App, including texts, lesson structures, quizzes, graphics, logos, icons, user interface design, and software code, is the property of ni18 or its licensors and is protected by applicable intellectual property and copyright laws.

We grant you a personal, non-exclusive, non-transferable, revocable license to use the App solely for personal, non-commercial educational purposes. You agree not to:

• Copy, modify, distribute, sell, or lease any part of the App or its content.

• Reverse engineer, decompile, or attempt to extract the source code of the App.

• Use automated systems, bots, or scrapers to extract educational content from the App.

3. Third-Party Services and Advertisements

The App is offered free of charge and is supported by third-party advertising. By using the App, you acknowledge and agree that:

• We utilize Google AdMob to display banner, interstitial, and rewarded advertisements.

• We utilize Google Play Services and Firebase (Analytics, Crashlytics, and Cloud Messaging) to ensure stability, deliver notifications, and improve app functionality.

• Interactions with third-party advertisements or services found within the App are governed by their respective terms and privacy policies.

4. Notifications and Learning Reminders

The App provides optional daily study reminders and notifications to help maintain your learning streak. You can enable, disable, or adjust notification timings at any time within the App settings or your device system settings.

5. Offline Availability and Data Storage

The core lessons and study guides are designed to work offline. Your bookmarks, quiz scores, and learning progress are stored locally on your device. Clearing your device data or uninstalling the App may reset your saved progress.

6. Disclaimer of Warranties

The App and its educational content are provided on an "AS IS" and "AS AVAILABLE" basis without warranties of any kind, either express or implied. While we strive for accuracy, we make no representations or warranties regarding uninterrupted or error-free operation.

7. Limitation of Liability

To the maximum extent permitted by applicable law, in no event shall ni18, its developers, or affiliates be liable for any direct, indirect, incidental, special, or consequential damages arising from the use of or inability to use the App.

8. Changes to Terms

We reserve the right to update these Terms periodically. Continued use of the App following any changes indicates your acceptance of the revised Terms.

9. Governing Law

These Terms shall be governed by and construed in accordance with the laws of India.

10. Contact Information

If you have any questions or feedback regarding these Terms and Conditions, please contact us at:

• Email: ask.ni18.in@gmail.com

• Website: https://www.ni18.in/

• Application ID: in.ni18.englishgrammar