Terms of Use

01. Acceptance of Terms

By creating an account, downloading, installing, or otherwise using any of our Apps, you acknowledge that you have read, understood, and agree to be bound by these Terms and our Privacy Policy. These Terms form a binding legal agreement between you and Hien Nguyen.

If you are using the Apps on behalf of an organization, you represent that you have the authority to bind that organization to these Terms, and references to “you” mean both you and the organization.

02. Eligibility

You must be at least 13 years old (or the minimum age required in your country to consent to use online services) to use the Apps. If you are under the age of majority in your jurisdiction, you must have your parent or legal guardian’s permission. By using the Apps, you represent and warrant that you meet these requirements.

Some Apps may have stricter age ratings as set out on the App Store listing. You agree to comply with those age requirements.

03. License Grant

Subject to your compliance with these Terms, we grant you a limited, non-exclusive, non-transferable, non-sublicensable, revocable license to download, install, and use the Apps on a device that you own or control, solely for your personal, non-commercial use.

This license does not allow you to use the Apps on any device that you do not own or control, and you may not distribute or make the Apps available over a network where they could be used by multiple devices at the same time, except as explicitly permitted by the App Store’s usage rules.

04. Use Restrictions

You agree not to, and not to permit any third party to:

• Copy, modify, adapt, translate, or create derivative works of the Apps;
• Reverse engineer, decompile, disassemble, or attempt to derive the source code of the Apps, except to the extent permitted by applicable law;
• Remove, alter, or obscure any copyright, trademark, or other proprietary notices;
• Use the Apps to develop a competing product or service;
• Use any automated means (bots, scrapers, crawlers) to access or interact with the Apps;
• Interfere with the security, integrity, or performance of the Apps or any associated servers;
• Use the Apps for any illegal, harmful, fraudulent, infringing, or offensive purpose;
• Upload malware, viruses, or any code designed to disrupt or damage the Apps or other users.

05. Accounts

Some Apps may allow or require you to create an account. You agree to provide accurate, current, and complete information when registering, and to keep your account information up to date. You are responsible for safeguarding your credentials and for all activity that occurs under your account.

Notify us immediately at contact@hiennv.dev if you suspect any unauthorized access to your account. We are not liable for any loss or damage arising from your failure to protect your credentials.

06. User Content

If an App allows you to create, upload, or store content (text, images, audio, journal entries, bookmarks, etc.) (“User Content”), you retain ownership of your User Content. You grant us a worldwide, non-exclusive, royalty-free license solely to host, store, transmit, display, and process your User Content as needed to provide the App to you.

You are solely responsible for your User Content and represent that you have all necessary rights to submit it. You agree not to submit User Content that:

• Infringes any intellectual property, privacy, or other rights of third parties;
• Is defamatory, obscene, harassing, hateful, or unlawful;
• Contains personal data of others without their consent;
• Violates any applicable law or regulation.

07. Purchases & Subscriptions

In-App Purchases

Certain Apps offer one-time in-app purchases or auto-renewable subscriptions. All purchases are processed by the platform operator (Apple) under the App Store’s terms. Prices are displayed at the time of purchase and may vary by region.

Auto-Renewable Subscriptions

• Subscriptions automatically renew at the end of each subscription period at the same price, unless cancelled at least 24 hours before the end of the current period;
• Your account will be charged for renewal within 24 hours prior to the end of the current period;
• You can manage and cancel subscriptions through your App Store account settings;
• If a free trial is offered, any unused portion is forfeited when you purchase a subscription;
• Refunds are governed by the App Store’s refund policy. We do not process refunds directly.

08. Intellectual Property

The Apps and all content, features, and functionality (including but not limited to source code, design, graphics, logos, icons, audio, animations, and trademarks) are the exclusive property of Hien Nguyen and are protected by copyright, trademark, and other intellectual property laws.

Nothing in these Terms transfers any ownership of, or grants any rights to, our intellectual property other than the limited license described above.

09. Third-Party Services

The Apps may integrate with or rely on third-party services (such as Apple iCloud, Firebase, Supabase, analytics providers, or payment processors). Your use of those services is subject to their own terms and privacy policies, and we are not responsible for their content, practices, or availability.

We may include links to external websites or content. Such links do not constitute endorsement, and we have no control over and assume no responsibility for them.

10. App Store Terms

You acknowledge that these Terms are concluded between you and Hien Nguyen only, and not with Apple Inc. (“Apple”). Apple is not responsible for the Apps or their content. The following additional terms apply to Apps obtained from the Apple App Store:

• The license is limited to a non-transferable license to use the App on any Apple-branded device you own or control, as permitted by the App Store’s Usage Rules;
• We, not Apple, are solely responsible for the App and its content, maintenance, support, and any product warranties to the extent not effectively disclaimed;
• Apple has no obligation to provide maintenance or support for the App;
• In the event of any failure of the App to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price (if any). To the maximum extent permitted by law, Apple has no other warranty obligation;
• We, not Apple, are responsible for addressing any claims by you or any third party relating to the App, including product liability, legal/regulatory compliance, and consumer protection claims;
• We, not Apple, are responsible for the investigation, defense, settlement, and discharge of any third-party intellectual property infringement claim;
• You represent that (i) you are not located in a country subject to a U.S. Government embargo or designated as a “terrorist supporting” country and (ii) you are not listed on any U.S. Government list of prohibited or restricted parties;
• Apple and Apple’s subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.

11. Disclaimers

THE APPS ARE PROVIDED ON AN “AS IS” AND “AS AVAILABLE” BASIS, WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, OR ACCURACY.

We do not warrant that the Apps will be uninterrupted, error-free, secure, or free of harmful components, or that any defects will be corrected. You use the Apps at your own risk.

12. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL HIEN NGUYEN BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS, DATA, GOODWILL, OR USE, ARISING FROM OR RELATING TO YOUR USE OF THE APPS.

OUR TOTAL CUMULATIVE LIABILITY FOR ANY CLAIM ARISING UNDER THESE TERMS SHALL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID US IN THE TWELVE (12) MONTHS PRECEDING THE EVENT GIVING RISE TO THE LIABILITY, OR (B) USD $50.

13. Indemnification

You agree to indemnify, defend, and hold harmless Hien Nguyen and any affiliates from and against any claims, damages, losses, liabilities, and expenses (including reasonable attorneys’ fees) arising out of or related to (a) your use of the Apps, (b) your User Content, (c) your violation of these Terms, or (d) your violation of any third-party right.

14. Termination

We may suspend or terminate your access to the Apps at any time, with or without cause or notice, including if we reasonably believe you have violated these Terms. You may stop using the Apps at any time by deleting them from your device.

Upon termination, the licenses granted to you will immediately end. Sections relating to intellectual property, disclaimers, limitation of liability, indemnification, and governing law will survive termination.

15. Governing Law & Disputes

These Terms are governed by the laws of the Socialist Republic of Vietnam, without regard to its conflict-of-laws principles. Any dispute arising from these Terms or the Apps shall be resolved through good-faith negotiation first, and if unresolved, by the competent courts located in Hanoi, Vietnam.

Nothing in this section limits any mandatory consumer rights you may have under the laws of your country of residence.

16. Changes to These Terms

We may update these Terms from time to time. When we make material changes, we will revise the “Last updated” date at the top of this page and, where appropriate, provide notice through the Apps. Your continued use of the Apps after the updated Terms take effect constitutes acceptance of the changes.

17. Contact

If you have questions, feedback, or legal inquiries about these Terms, get in touch: