Terms of Service

LEXA is a learning and app-blocking companion app designed to help users review English before opening selected apps or websites.

The App may use Apple-provided technologies, including Screen Time, Family Controls, Managed Settings, and Device Activity, to help users temporarily restrict access to apps, app categories, and web domains selected by the user.

The App may provide features such as vocabulary review, learning card management, review history, learning progress, streak display, unlock sessions, and related learning support functions.

The App is intended to support self-directed learning and self-management. It is not intended to be used to control, monitor, or restrict another person’s device usage without that person’s valid consent.

You must use the App in compliance with these Terms, the App Store terms, applicable Apple terms and policies, and all applicable laws and regulations.

If you are a minor under the laws of your country of residence, you may use the App only with the consent and supervision of a parent or legal guardian.

The App is not primarily directed at children under the age of 13. If a higher minimum age or additional consent requirement applies in your country or region, you are responsible for complying with that requirement.

To use certain features of the App, you need a compatible iPhone, a supported iOS version, and the required system permissions.

At the time of this version, the App does not provide account registration.

The App is designed primarily to store core data on your device. This may include learning cards, review history, learning settings, blocking settings, and unlock session information.

Your data may be lost if your device is changed, damaged, reset, lost, or if the App is deleted, if iCloud backup is disabled or incomplete, or if an operating system or device issue occurs.

If we introduce accounts, cloud sync, backup, or similar features in the future, we will update these Terms and/or our Privacy Policy as appropriate.

To use the App’s blocking-related features, you must grant the necessary permissions related to Screen Time, Family Controls, Managed Settings, Device Activity, or similar Apple frameworks.

If you do not grant the required permissions, some blocking features may not be available or may not function as expected.

The behavior of blocking, unblocking, re-blocking, monitoring, notifications, and unlock sessions depends on iOS, Apple APIs, device settings, permission status, operating system version, background execution, and other technical conditions outside our full control.

For this reason, we do not guarantee that the App will always block selected apps, categories, or web domains accurately, or that unblocking or re-blocking will always occur at the exact intended time.

You must not use the App to restrict, monitor, or manage another person’s device, app usage, or online activity without that person’s valid consent and lawful authority.

The App provides features intended to support English learning, vocabulary review, memorization, and habit formation.

We do not guarantee any specific learning result, exam result, improvement in English ability, grade improvement, increase in concentration, reduction in smartphone usage, or improvement in digital dependency or similar conditions.

We aim to improve the accuracy and quality of the App’s words, translations, examples, learning content, review timing, and difficulty settings. However, we do not guarantee that such content will always be accurate, complete, up to date, or suitable for your specific learning needs.

You may create learning cards, notes, vocabulary entries, and other learning content within the App.

You are responsible for the content you create, store, or use in the App.

You must not create, store, or use content that: - violates applicable law; - infringes copyright, trademark rights, privacy rights, publicity rights, reputation rights, or other rights of any third party; - contains discriminatory, threatening, harassing, violent, or abusive material; - encourages unlawful activity; - is obscene, harmful, or contrary to public order or morality; - interferes with the operation, maintenance, or security of the App; - or is otherwise reasonably considered inappropriate by us.

At the time of this version, if the App does not provide cloud sync or sharing features, user-created content is generally stored on your device. However, if you voluntarily send screenshots, logs, text, or other information to us for support, we may review such information to the extent necessary to respond to your inquiry.

The App may offer certain features as paid features, subscriptions, one-time purchases, or other paid plans.

Purchases are made through Apple’s in-app purchase system and the App Store.

Prices, subscription periods, renewal conditions, free trial availability, cancellation methods, and refund conditions are shown in the App Store, in the App, or in Apple’s purchase interface, and are subject to Apple’s applicable terms and procedures.

If you purchase a subscription, you must cancel it through the App Store or your Apple ID settings. Deleting the App does not necessarily cancel your subscription.

Refunds for purchases made through Apple are generally handled by Apple in accordance with Apple’s refund process and policies. We do not independently guarantee refunds for purchases processed by Apple.

Nothing in these Terms limits any mandatory consumer rights you may have under applicable EU or national consumer protection laws.

You must not: - violate any applicable law or regulation; - violate these Terms; - use the App for unlawful, fraudulent, abusive, or harmful purposes; - use the App to restrict, monitor, or control another person’s device or app usage without valid consent; - bypass, tamper with, disrupt, or interfere with the App’s blocking, unlocking, paid, or learning features; - reverse engineer, decompile, disassemble, modify, analyze, or create derivative works of the App, except where such restriction is prohibited by mandatory law; - attempt unauthorized access to the App, related systems, or third-party systems; - engage in cracking, cheating, tampering, vulnerability probing, or security circumvention; - place excessive load on the App or related systems; - copy, reproduce, distribute, sell, resell, sublicense, or commercially exploit the App, its content, design, code, trademarks, or other materials without authorization; - infringe the rights or interests of us, other users, Apple, or any third party; - or engage in any conduct that we reasonably consider inappropriate or harmful.

All intellectual property rights in and to the App, including copyrights, trademarks, design rights, software, text, images, UI, logos, and other materials, belong to us or the relevant rights holders.

Subject to your compliance with these Terms, we grant you a personal, limited, non-exclusive, non-transferable, non-sublicensable license to use the App for your own personal use.

These Terms do not transfer any ownership rights in the App or related content to you.

As between you and us, you generally retain rights to learning cards, notes, and other content that you create in the App. However, you grant us a limited permission to handle such content to the extent necessary to provide App functionality, storage, display, backup where applicable, troubleshooting, and support, subject to our Privacy Policy.

We may change, add, suspend, discontinue, or terminate all or part of the App or its features when reasonably necessary.

We may suspend or terminate the App or certain features in cases including: - maintenance, inspection, or updates; - changes to iOS, the App Store, Apple APIs, or related platform requirements; - bugs, defects, or security issues; - legal, regulatory, administrative, or court requests; - natural disasters, communication failures, system failures, or other events beyond our reasonable control; - or other cases where we reasonably consider suspension or termination necessary.

To the extent permitted by applicable law, we are not liable for damages arising from changes, suspension, or termination of the App, unless caused by our intentional misconduct or gross negligence.

The App is provided on an "as is" and "as available" basis, subject to your mandatory rights under applicable law.

We do not guarantee that: - the App will always operate normally; - the App will be free from bugs, errors, interruptions, delays, or defects; - the App will be available on all devices, operating system versions, settings, or environments; - blocking, unblocking, or re-blocking will always work exactly as intended; - learning data, settings, or history will always be preserved; - the App will produce any specific learning outcome, exam result, concentration improvement, or reduction in smartphone usage; - content in the App will always be accurate, complete, current, or suitable for your purposes; - or the App will meet your particular expectations or requirements.

Some jurisdictions do not allow certain exclusions or limitations. In such cases, the exclusions and limitations in these Terms apply only to the maximum extent permitted by applicable law.

You use the App at your own responsibility, subject to applicable law.

To the extent permitted by applicable law, we are not liable for damages arising from your use of, or inability to use, the App, unless caused by our intentional misconduct or gross negligence.

Where we are liable, our liability is limited to direct and ordinary damages actually incurred by you. We are not liable for indirect, incidental, special, consequential, or punitive damages, loss of profits, loss of data, loss of opportunity, or business interruption, to the extent permitted by applicable law.

For paid users, where we are liable for damages in connection with the App, our aggregate liability is limited to the amount actually paid by you for the App during the twelve months preceding the event giving rise to the claim, unless this limitation is not permitted by applicable law.

Nothing in these Terms excludes or limits liability that cannot be excluded or limited under applicable law, including liability for intentional misconduct, gross negligence, death or personal injury caused by negligence where applicable, or mandatory consumer rights.

The handling of personal data and other user information is described in our separate Privacy Policy.

You acknowledge that data stored on your device may be lost due to device failure, loss, reset, App deletion, operating system issues, iCloud backup settings, or similar events.

Unless the App provides cloud sync or backup features, we do not guarantee restoration of data stored only on your device.

For users in the EU/EEA, personal data will be handled in accordance with applicable data protection laws, including the General Data Protection Regulation where applicable. Details are provided in the Privacy Policy.

If we reasonably determine that you have violated these Terms, or that there is a risk of violation, we may take appropriate measures without prior notice, including: - restricting your use of the App; - suspending access to paid features where permitted by law; - refusing or limiting support; - taking measures necessary to prevent unauthorized or harmful use; - or taking other actions reasonably necessary to protect the App, users, third parties, or ourselves.

To the extent permitted by applicable law, we are not liable for damages arising from such measures, unless caused by our intentional misconduct or gross negligence.

We may update these Terms when necessary.

Minor changes, typo corrections, clarifications, or non-material updates may become effective when posted in the App, on our website, or through another appropriate method.

If we make changes that materially affect your rights or obligations, we will provide notice through the App, our website, the App Store description, or another appropriate method.

If you continue to use the App after the updated Terms become effective, you will be deemed to have accepted the updated Terms, unless applicable law requires a different method of consent.

The App is distributed through the Apple App Store.

Your download, purchase, in-app purchases, subscriptions, refunds, App Store reviews, and use of the App Store are subject to Apple’s applicable terms, conditions, and policies.

These Terms are between you and us, not Apple. Apple is not responsible for providing maintenance or support services for the App, except to the extent required by applicable law or Apple’s own terms.

You must comply with applicable third-party terms when using the App.

Apple and Apple’s subsidiaries are third-party beneficiaries of these Terms. Upon your acceptance of these Terms, Apple has the right to enforce these Terms against you as a third-party beneficiary.

These Terms are governed by the laws of Japan, except where mandatory laws of your country of residence require otherwise.

If you are a consumer residing in the EU/EEA, this choice of law does not deprive you of the protection of mandatory consumer protection laws of your country of residence.

Any dispute arising out of or relating to the App or these Terms will be subject to the courts of Japan, unless mandatory consumer protection laws of your country of residence allow you to bring proceedings in the courts of your country of residence or otherwise require a different jurisdiction.

For questions about these Terms, please contact:

Operator: Takuto Hizawa

Email: [email protected]