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Terms of Service (End User License Agreement)

Version v2.1  |  Published: October 1, 2026  |  Effective: October 1, 2026

1. Service Description

1.1 Features

Hui Chi Hui Lian is a healthy-eating and fitness management tool. Core features include: food logging and nutrition analysis, smart meal assembly and diet plans, training plans and workout logging, outdoor running routes, weight and body-circumference tracking, lifestyle logging (water/sleep/mood/supplements/menstrual cycle), progress photos and data reports, interoperability with HealthKit / Health Connect, and local reminders.

1.2 Nature of the service

The App is a utility. All data, computed results, and suggestions are general health-management references; they are not medical devices and do not constitute medical diagnosis, treatment, rehabilitation, or medication advice, nor do they replace in-person opinions of professional dietitians or physicians.

1.3 Compatibility

The App requires certain OS versions and device models, as described on the App Store product page. If your device is incompatible or below the minimum OS version, you may request a refund under App Store policy.

2. Accounts and Data

2.1 No account system

The App does not provide account registration or sign-in. You can use every feature without providing a name, phone number, or email. This release operates no servers; everything you enter is stored locally on your device.

2.2 Local data

• Your data is stored locally with AES-256 encryption; the key exists only on your device;
• You can export all data as JSON/CSV or clear it in one tap under "Profile › Data Management";
• Uninstalling the App permanently and irrecoverably deletes all local data; please export backups regularly;
• For detailed data handling, see the Privacy Policy.

3. Software License and Restrictions

3.0 Relationship to the open-source license

The App's source code is released under the MIT License (see the LICENSE file in the repository root). Rights granted by that license are governed by its text, and this Agreement neither restricts nor replaces it. Sections 3.1 and 3.2 govern your use of the App binary we distribute through the App Store, not your use of the source code. Where the two reach different conclusions about a specific act: as to the source code, the MIT License controls; as to use of the released App, this Agreement controls.

3.1 License grant

Subject to your compliance with this Agreement, we grant you a limited, non-exclusive, non-transferable, revocable license, free of charge (except membership features), to run and use the App on Apple-branded devices you own or control, in accordance with the App Store Terms of Service and the Apple "Usage Rules". The license also applies to devices associated with the same Apple account (e.g., Family Sharing, multi-device sync).

3.2 Restrictions

You may not:

• reverse-engineer, decompile, disassemble, decrypt, modify, adapt, translate the App, or attempt to derive source code (except to the extent expressly permitted by law);
• rent, lease, lend, sell, sublicense, distribute, or host the App, or use it for service bureau/time-sharing or any third-party service offering;
• remove, alter, or obscure copyright, trademark, or other rights notices or technical protection measures;
• use the App for anything unlawful, harmful to others' lawful rights, or inconsistent with this Agreement;
• distribute or copy the App through unofficial channels, or bypass in-app purchase to unlock paid features.

The built-in health calculation methods, food database, and training templates are for your personal, non-commercial use.

4. User Conduct

• You may use the App only to manage your own health; you may not use it to diagnose others, provide commercial coaching, or conduct any medical business;
• You may not publish unlawful, political-sensitive, obscene, violent, discriminatory, harassing, defamatory, or rights-infringing content through sharing or feedback channels;
• You may not interfere with the App's operation, attack related systems, or distribute malware;
• If you breach the above, we may, within our capability, stop further service and reserve legal rights. As the App is local software with no accounts, this primarily means terminating updates and technical support.

5. Intellectual Property

5.1 App rights

IP rights in the code, UI design, icons, training templates, copy, algorithm models, and food-data compilation belong to us or the respective rights holders and are protected by copyright, trademark, and treaty law. Any reproduction, distribution, or commercial use without written permission is infringement.

5.2 Your data

Records you create on your device (custom foods, training plans, notes, photos) are owned by you. Because data stays local, we neither possess nor copy such content, and no content license between us is needed.

5.3 Feedback

We may use feedback, suggestions, or ideas you voluntarily send to improve the product, free of charge, with no further payment or confidentiality obligation (unless you expressly request confidentiality and we agree in writing).

6. Membership and In-App Purchases

6.1 Membership type

The App offers free features and a paid "Lifetime" membership. Lifetime is a one-time, non-consumable purchase (currently displayed at CNY 138; the price on the App Store purchase confirmation page prevails), permanently unlocking all membership features promised at purchase.

The App offers no auto-renewable subscription and no recurring charges; nothing will ever be charged without your active confirmation.

6.2 Purchase and payment

• Purchases are completed via Apple App Store in-app purchase (StoreKit) as a single charge to your Apple ID;
• We do not touch or store your credit-card number or payment account information;
• After changing devices, reinstalling the OS, or reinstalling the App, tap "Restore Purchases" on the membership page and use the same Apple ID to restore free of charge;
• Whether Family Sharing covers the item depends on Apple's applicable rules at purchase time.

6.3 Refunds

Billing, settlement, and refunds for in-app purchases are handled by Apple under App Store terms. To request a refund, apply to Apple in your Apple ID purchase history (reportaproblem.apple.com). We cannot accept refunds directly or operate Apple's charges.

6.4 Benefit adjustments

We may adjust the split between free and membership features as the product evolves, but for any Lifetime membership you have purchased, the core benefits promised on the purchase page will not be materially reduced by updates.

7. Health Disclaimers

• Data accuracy: Food nutrition data is compiled from public sources (e.g., Chinese Food Composition Tables, USDA) and varies with ingredients and cooking; calorie burn is estimated from general formulas and individual variance is significant. Absolute accuracy is not guaranteed.
• Exercise risk: strength training, outdoor running, and HIIT carry risks of strains, falls, and cardiovascular events. Warm up, stay within your limits, choose safe venues, and watch traffic when using GPS. Stop immediately and seek care for chest pain, dizziness, breathing difficulty, or severe joint pain.
• Women's health: cycle prediction is a mathematical projection from your entries and must not be used for contraception, conception-related medical decisions, or gynecological diagnosis.
• No emergency service: the App does not provide emergency recognition or first-aid guidance; call your local emergency number in emergencies.

8. Limitation of Liability

8.1

To the maximum extent permitted by law, we are not liable for any indirect, incidental, special, consequential, or punitive damages (including data loss, device damage, health harm, lost profits, or business interruption) arising from use of or inability to use the App, even if advised of the possibility of such damages.

8.2

If liability may not be excluded, our aggregate liability to you is capped at the membership fee, if any, you actually paid to us for the App; liability arising from free use is waived to the extent permitted by law.

8.3

This section does not exclude or limit liability that cannot be excluded or limited by law (e.g., personal injury caused by willful misconduct or gross negligence, mandatory product liability).

9. Changes, Interruption and Termination

• We may update the App to fix defects, improve features, or adapt to new systems; some features may change;
• The App is primarily local and does not depend on our continuous online operation. If maintenance or distribution ends, the installed version's local features generally remain usable;
• If a future version enables cloud-dependent services and we terminate them overall, we will make reasonable efforts to give 30 days' notice in the App or store page and preserve a data-export path;
• You may terminate this Agreement at any time by uninstalling the App.

10. Force Majeure

We are not liable for failure to perform caused by earthquakes, typhoons, floods, fire, epidemics, war, terrorism, government acts, legal/regulatory changes, telecom or power failures, Apple/Google platform policy changes or outages, or any other unforeseeable, unavoidable, insurmountable circumstance, but we will try to minimize the impact on you.

11. Governing Law and Dispute Resolution

11.1

This Agreement and all disputes are governed by the laws of the People's Republic of China (excluding Hong Kong SAR, Macau SAR, Taiwan, and conflict-of-laws rules).

11.2

Disputes shall first be resolved by friendly negotiation; failing that, either party may bring suit before the people's court with jurisdiction at the developer's domicile.

11.3

Because you obtained the App via the App Store, disputes with Apple are handled separately under App Store terms.

12. Miscellaneous

• Severability: if any clause is held invalid or unenforceable, the rest remain in effect and will be replaced by a valid clause closest to the original intent;
• No waiver: failure or delay in exercising any right does not waive it;
• Headings: headings are for reading convenience and do not affect interpretation;
• Entire agreement: this Agreement and the Privacy Policy constitute the entire agreement between you and us regarding the App;
• Updates: updates are announced in the App or on this page; material changes require your renewed consent via pop-up. If you reject an updated version, stop using and uninstall the App.

13. Apple-Specific Terms

This section applies only if you obtained the App through the Apple App Store and forms an integral part of this Agreement:

1. Third-party beneficiary: you acknowledge that Apple and its subsidiaries are third-party beneficiaries of this Agreement; upon your acceptance, Apple has the right (and is deemed to have accepted it) to enforce this Agreement against you as a third-party beneficiary.
2. Maintenance and support: maintenance and support obligations are ours alone; Apple has no obligation to provide any maintenance or support.
3. Warranty: if the App fails 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, and all other claims, losses, liabilities, damages, costs, and expenses are ours under this Agreement.
4. Product claims: we, not Apple, are responsible for any claims relating to the App or your possession/use of it, including product liability, non-conformity with law, or consumer-protection claims.
5. Intellectual property: if a third party claims the App or your possession/use infringes IP rights, we, not Apple, are responsible for investigation, defense, settlement, and performance of that claim.
6. Legal compliance: you represent and warrant that (a) you are not located in a country under U.S. government embargo or designated as a "terrorism-supporting" country, and (b) you are not on any U.S. government prohibited or restricted-party list.
7. Compliance with usage rules: your use must comply with applicable third-party terms, including the App Store Terms of Service.
8. Developer and publisher: the App is developed by us (Hua Yanming, brand: Nisen & Sea); we, not Apple, are the obligor under this Agreement.

14. Contact

Questions about this Agreement: contact us via the channels below; we reply within 15 working days:

• Email: huayanming2019@gmail.com
• In-app feedback: "Profile › Help & Feedback › Feedback"