TianJi YanXiang · Terms of Service, Subscription Terms and End User License Agreement
1. Service Scope and Limitations
Reference results are generated from device sensors, location permissions, camera imagery, imported floor plans, and user actions. AR floor modes are estimates. RoomPlan/LiDAR results depend on the device, environment, lighting, occlusion, and scanning process. VR mode uses dimensions entered by the user. Results are not guaranteed to be accurate, complete, current, or suitable for a particular purpose. Important decisions require on-site verification and consultation with qualified professionals.
Do not use the app for emergency response, vehicle or aircraft navigation, building safety assessment, land surveying, construction layout, load-bearing structure judgments, engineering acceptance, medical decisions, or any other safety-critical decisions.
2. In-App Purchases
| Product | Type | Benefits |
|---|---|---|
| TianJi YanXiang Annual Membership | Auto-renewable subscription (period: 1 year) | Access to all membership features during the active subscription period. Price and taxes are shown on Apple’s purchase screen. |
| TianJi YanXiang Pro (Lifetime) | Non-consumable one-time purchase | One purchase permanently unlocks all features, including family room allocation, unlimited floor-plan reports and scroll exports, and future features. |
| Floor-Plan Reference Report (single) | Consumable | One credit for one floor-plan reference report. A credit cannot be reused after submission succeeds. |
| Watermark-Free Culture Scroll (single) | Consumable | One credit to save or share one watermark-free cultural reference scroll. |
Active annual membership and lifetime access both include family room allocation and unlimited floor-plan reports and scroll exports without buying individual credits. Single-use products are for use without membership access. Hardware and system permission requirements still apply. A lifetime purchase does not automatically cancel an existing annual subscription; cancel unneeded renewal in Apple ID subscription settings.
Availability, prices, taxes, and local currency are shown by the App Store for your region. The purchase screen is authoritative before you buy.
3. Auto-Renewable Subscriptions
When purchase is confirmed, the charge is applied to your Apple ID account. Subscriptions renew automatically for the period shown at purchase (1 year for the annual membership) and at the price shown, unless auto-renewal is turned off at least 24 hours before the current period ends. Renewal charges are processed within 24 hours before the end of the current period, according to Apple’s rules.
If a free trial is offered: the trial converts to a paid subscription unless you cancel at least 24 hours before it ends, and any unused portion of the trial is forfeited when you purchase a subscription during the trial.
If subscription prices change, you will be notified according to Apple’s rules and applicable law; price increases requiring consent are presented by Apple.
Manage or cancel subscriptions in Settings → Apple ID → Subscriptions on your iPhone or iPad. Deleting the app does not cancel a subscription. Apple handles refunds, billing, payment disputes, and purchase records.
4. Restore Purchases and Consumables
Restore Purchases uses Apple’s account records to restore active subscriptions and non-consumable products. Consumables are not delivered again by Apple’s restore process; verified unused credits are stored on the current device. Deleting the app, changing devices, or losing device data may prevent unused consumable credits from being restored. Please keep this in mind before purchasing.
5. Privacy and User Content
Camera, location, motion-sensor, and photo permissions are requested only when the relevant feature is used. The current version processes scans and analysis primarily on-device and does not provide its own upload API. Images and spatial files saved or shared voluntarily may contain location, orientation, building structure, or other sensitive information. Review them before sharing and confirm that you have the right to use their contents. See our Privacy Policy.
Personal and family profiles: Names or labels, relationships, birth dates or years, and gender that you voluntarily enter are used for life-gua and room-allocation references. Obtain the person’s or guardian’s permission before entering another person’s or a child’s information. Profiles are stored on the device and in the App Group shared by this app and its widget. Family profiles are no longer automatically uploaded to or restored from iCloud.
Preferences and Apple iCloud: Compass-lock preferences and action lists may sync through Apple’s iCloud key-value store when supported by the distributed app and system settings. This update stops automatic cloud sync of personal family profiles. Deleting a profile also requests removal of accessible legacy iCloud profile copies; offline deletion may finish syncing after reconnection.
Retention and deletion: Data remains until you delete it. With or without a paid membership, open Settings → Family data management to delete individual members or clear all owner and family profiles and disable personal analysis. This removes local, shared-container and accessible legacy iCloud profile copies. Previously exported, shared or separately archived copies must be deleted where they are stored.
6. Limitation of Liability
You should exercise independent judgment based on the real environment and should not make renovation, construction, relocation, investment, medical, or other major decisions solely on app results. To the extent permitted by law, losses caused by device failure, environmental interference, permission states, algorithmic errors, service interruption, or misuse are your responsibility. Nothing here excludes or limits liability that cannot be excluded or limited by law.
7. End User License Agreement (EULA)
- Acknowledgement: This agreement is concluded between you and the developer only, and not with Apple Inc. (“Apple”). The developer, not Apple, is solely responsible for the app and its content.
- Scope of license: The developer grants you a limited, non-exclusive, non-transferable, revocable personal license to use the app on Apple-branded products that you own or control, as permitted by the Usage Rules in the App Store Terms of Service. Except as permitted by law, you may not copy, modify, reverse engineer, rent, resell, or sublicense the app. As permitted by Apple’s Usage Rules, other accounts associated with the purchaser may also access and use the app through Family Sharing or volume purchasing.
- Maintenance and support: The developer is solely responsible for providing maintenance and support for the app; see Section 8 for contact details. Apple has no obligation to provide any maintenance or support.
- Warranty: If the app fails to conform to an applicable warranty, you may notify Apple, and Apple will refund the purchase price of the app (if any). To the maximum extent permitted by law, Apple has no other warranty obligation regarding the app. Any other claims, losses, liabilities, damages, costs, or expenses attributable to a failure to conform to a warranty are the developer’s responsibility.
- Product claims: The developer, not Apple, is responsible for addressing any claims by you or any third party relating to the app or your possession and use of it, including: (a) product liability claims; (b) claims that the app fails to conform to applicable legal or regulatory requirements; and (c) claims under consumer protection, privacy, or similar laws.
- Intellectual property: If a third party claims that the app or your possession and use of it infringes that party’s intellectual property rights, the developer, not Apple, is solely responsible for the investigation, defense, settlement, and discharge of the claim. The app and its content are owned by the developer or its licensors.
- Legal compliance: You represent and warrant that (a) you are not located in a country subject to a U.S. Government embargo or designated by it as a “terrorist supporting” country, and (b) you are not listed on any U.S. Government list of prohibited or restricted parties. You must also comply with applicable third-party terms of agreement when using the app (for example, a wireless data service agreement).
- Third-party beneficiary: Apple and its subsidiaries are third-party beneficiaries of this agreement. Upon your acceptance of this agreement, Apple will have the right (and will be deemed to have accepted the right) to enforce this agreement against you as a third-party beneficiary.
8. Contact
Developer: Beijing Changxian Technology Co., Ltd. (北京长线科技有限公司). For subscription, privacy, support, or service questions, email support@sdnlink.cn. Apple account charges, refunds, and subscription status are handled through Apple’s official support channels.
Developer: Beijing Changxian Technology Co., Ltd. (北京长线科技有限公司)
Contact address: 北京市海淀区海淀大街甲36号5层5014号-970号
Email: support@sdnlink.cn
Official website: https://sdnlink.cn
Registered app name: 天机演象
App filing number: 京ICP备2024080356号-2A