1. Availability and agreement
These Terms form an agreement between you and Hongyu Zhang, an individual who operates the LingoUnion product. In these Terms, “LingoUnion,” “we,” “us,” and “our” refer to Hongyu Zhang. LingoUnion is a product name and is not a separate legal entity.
LingoUnion version 1.0 is publicly available on the US App Store for compatible iPhones. Version 2.0 adds AI-generated translations and speech across 20 target languages. The subscription provisions in these Terms apply to eligible subscriptions offered through Apple.
By using this website or app, you agree to these Terms. If you do not agree, do not use the service. Use of the iPhone app is also subject to Apple’s applicable terms, including the Apple Standard End User License Agreement.
2. Eligibility and availability
LingoUnion is intended for adults age 18 or older. It is offered for compatible iPhones in the United States and is not designed for Android, iPad, Mac, or other platforms.
You need an Apple Account and a compatible iPhone configuration to obtain the app and, if offered, purchase a subscription through the App Store.
3. What LingoUnion provides
LingoUnion organizes language practice around one short, complete, everyday sentence that you choose. Version 2.0 uses OpenAI through LingoUnion’s gateway to produce one sentence and speech audio in a selected target language, then guides repeated listening, speaking, reading, handwriting, and scheduled review.
The service is a learning-management and practice tool. It does not provide a comprehensive language course, professional translation service, pronunciation certification, tutoring relationship, emergency service, or open-ended conversation system.
4. Important limitations
Do not use the service for medical, legal, financial, emergency, professional, safety-critical, or other high-risk communication. Use qualified professional assistance for those purposes.
AI translation and speech depend on LingoUnion’s gateway, OpenAI, a current verified subscription, and network availability. Speaking and handwriting also depend on Apple system capabilities. Availability and behavior may vary with iPhone model, iOS version, region, language, permissions, settings, network conditions, Apple services, and third-party service availability. LingoUnion may pause learning when a required capability is unavailable.
An AI-generated translation may not be the only possible way to express an idea and may contain errors. LingoUnion presents one target sentence for focused beginner practice; it does not promise that the sentence is appropriate for every context or intended meaning.
5. Subscription, free trial, and billing
LingoUnion uses one annual auto-renewable subscription purchased through Apple. The subscription is titled “LingoUnion Annual.” During each verified annual period, it permits access to the full LingoUnion sentence-learning workflow, subject to the service and compatible iPhone capabilities described in these Terms.
The subscription is billed for one year at a time. The current localized annual price and any eligible introductory offer are loaded from the App Store and displayed in the app before you continue to Apple’s final purchase confirmation. The price shown by Apple at confirmation controls. LingoUnion does not hard-code a price on this website.
Introductory offer
An eligible customer may receive a one-month introductory free trial with the annual subscription. One App Store month may contain 28, 29, 30, or 31 days. Apple determines eligibility based on the subscription group and prior offer use. If Apple reports that you are not eligible, LingoUnion does not create a separate local free period.
Automatic renewal
Payment is charged to your Apple Account when Apple confirms the purchase. The subscription renews automatically for another annual period according to Apple’s purchase terms unless you cancel through your Apple Account before renewal. Canceling automatic renewal does not end access before the current verified subscription period expires. Learning access requires a current verified entitlement and compatible system capabilities.
Manage, cancel, or request a refund
Apple determines refund eligibility and outcomes. LingoUnion support cannot approve an Apple refund or ask you for an Apple Account password, verification code, or complete payment information.
6. Learning records and restoration
LingoUnion stores learning records only on the current iPhone. It does not provide cloud backup, synchronization, export, device migration, or reinstall recovery for learning records. A sentence selected for AI generation is processed as described in the Privacy Policy; this processing is not a backup of the learning library.
Deleting the app, losing or changing the iPhone, or reinstalling may permanently remove those records. Restoring purchases restores an eligible Apple subscription entitlement only; it does not restore learning records.
You may delete individual sentences or all LingoUnion learning records from within the app. Apple purchase and subscription records remain controlled by Apple. See the Privacy Policy for more information.
7. Acceptable use
You agree not to:
- use LingoUnion for unlawful, abusive, harmful, or fraudulent activity;
- attempt to bypass subscription, compatibility, safety, or data-deletion controls;
- reverse engineer, interfere with, overload, or disrupt the website or app except where applicable law expressly permits;
- misrepresent LingoUnion output as professional advice, certified translation, or an emergency service;
- infringe intellectual property, privacy, or other rights.
8. Ownership and feedback
The LingoUnion product name, website, app design, original text, graphics, and software are owned by Hongyu Zhang or used under license and are protected by applicable intellectual-property laws. These Terms grant only a limited, personal, non-transferable right to use the app as permitted by the App Store license.
You keep your rights in the sentences you enter. Providing feedback does not give LingoUnion ownership of your learning content. If you voluntarily provide product feedback that does not include learning content or confidential information, you permit us to use it to improve the service without payment or attribution.
9. Disclaimers and limits of liability
To the maximum extent permitted by applicable law, the website and app are provided “as is” and “as available.” We do not guarantee uninterrupted availability, permanent compatibility with every device or language combination, error-free AI translation, speech generation or recognition, or a particular learning result.
To the maximum extent permitted by applicable law, Hongyu Zhang, operating the LingoUnion product, will not be liable for indirect, incidental, special, consequential, or punitive damages, or for loss of learning records, opportunity, revenue, or data arising from use of or inability to use the service. Nothing in these Terms excludes rights or liabilities that cannot lawfully be excluded.
10. Changes, suspension, and termination
We may change the website, update the app, correct errors, suspend affected functions, or discontinue compatibility where required for safety, law, Apple platform changes, or reliable operation. Material changes to these Terms will be identified by an updated date and, when appropriate, an additional notice.
You may stop using the service at any time. Canceling a subscription and deleting learning records are separate actions.
11. Contact
Operator: Hongyu Zhang, individual
For questions about these Terms, email support@lingounion.com. Support is provided in English.