Legal

Terms of Use

Effective: 29 August 2026　·　Last updated: 29 August 2026　·　Also serves as the End User License Agreement (EULA)

The short version

UnivMap is an entertainment and educational star-map simulation. The arrival times, launch windows, and traffic conditions it computes are not real navigational advice. Please do not use it to plan an actual space mission or any real-world journey. The App is free, offline, and collects none of your data.

1. Acceptance of these terms

These Terms of Use (the “Terms”) form a legal agreement between you and the developer of the App (the “Developer”, “we”) governing your use of UnivMap (the “App”).

By downloading, installing, or using the App, you confirm that you have read, understood, and agree to be bound by these Terms. If you do not agree, do not download or use the App, and please remove any installed copy.

2. The most important clause: this is not real navigation

The App is a simulation and science-communication work that transplants a phone navigation interface onto cosmic scales. Its form — route planning, arrival times, launch windows, live traffic, modes of transport — deliberately imitates an everyday map app, but its contents are not executable navigational plans.

Specifically, the App’s calculations rely on extensive simplifying assumptions, including but not limited to: all orbits treated as perfect circles, no gravitational perturbation, no orbital insertion or transfer modelling, distances to some objects inferred from redshift, and missing radial velocities substituted with zero. These simplifications produce significant and unpredictable divergence from real celestial mechanics.

You must not rely on any output of the App as the basis for spaceflight mission planning, observational scheduling, academic citation, academic assessment, or any real-world navigational, timing, or safety decision. The modes of transport, traffic conditions, transit stops, and place reviews shown in the App are fictional by design.

3. Scope of licence

Subject to your compliance with these Terms, the Developer grants you a limited, personal, non-exclusive, non-transferable, non-sublicensable, revocable licence to install and use the App on mobile devices that you own or control and that comply with the applicable platform rules.

If you obtained the App through the Apple App Store, this licence is additionally governed by the Usage Rules published by Apple, and may be used by members of your Family Sharing group as Apple permits.

4. Restrictions

Except as expressly permitted by law or agreed by the Developer in writing, you may not:

reverse engineer, decompile, or disassemble the App, or attempt to derive its source code;
copy, modify, adapt, translate, distribute, rent, lend, resell, or sublicense the App;
remove, obscure, or alter any copyright, trademark, or other proprietary notice in the App or its data;
bulk-extract or redistribute the App or its bundled databases by automated means, or use them to build a competing product or service;
use the App for any unlawful purpose, or circumvent any platform technical protection measure.

5. Intellectual property and data attribution

Copyright and all other intellectual property rights in the App’s source code, interface design, visual presentation, written content, and name belong to the Developer. These Terms grant a right of use only and transfer no ownership.

The astronomical data bundled with the App consists of offline snapshots taken from the public databases of the following institutions, to whom the rights in that data belong: the NASA Exoplanet Archive, NASA JPL Horizons, ESA Gaia, SIMBAD/VizieR (CDS, Strasbourg), the 2MASS Redshift Survey, and the Harris globular cluster catalogue. The single Apollo 11 mission photograph used in the App is public-domain material released by NASA.

This App is a personal project and is not affiliated with, sponsored by, endorsed by, or approved by NASA, ESA, JPL, CDS, or any institution named above. Those names are used solely to attribute the source of the data.

6. Disclaimer of warranties

The App is provided “AS IS” and “AS AVAILABLE”. To the maximum extent permitted by applicable law, the Developer makes no warranties of any kind, express or implied, including without limitation the implied warranties of merchantability, fitness for a particular purpose, non-infringement, accuracy, completeness, reliability, and uninterrupted operation.

The Developer does not warrant that the App’s calculations are correct or suitable for any purpose, nor that the App will function correctly on every device or operating system version.

Some jurisdictions do not allow the exclusion of implied warranties, so the above exclusions may not apply to you, and you may have other rights.

7. Limitation of liability

To the maximum extent permitted by applicable law, the Developer shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising out of your use of or inability to use the App — including without limitation lost profits, lost data, or business interruption — even if advised of the possibility of such damages.

In any event, the Developer’s total cumulative liability is limited to the amount you actually paid to obtain the App; where the App was obtained free of charge, that limit is NTD 100 (approximately USD 3).

Nothing in these Terms excludes or limits liability that cannot be excluded or limited by law, including liability arising from wilful misconduct or gross negligence.

8. Relationship with Apple

If you obtained the App through the Apple App Store, the following apply and prevail over any conflicting provision of these Terms:

Acknowledgement: these Terms are concluded between you and the Developer only. Apple Inc. and its subsidiaries (“Apple”) are not a party to these Terms. The Developer, not Apple, is solely responsible for the App and its content.
Scope of licence: the licence granted is non-transferable, is limited to use on Apple-branded products that you own or control, and is subject to the App Store Usage Rules.
Maintenance and support: the Developer is solely responsible for providing maintenance and support for the App. Apple has no obligation to furnish any maintenance and support services.
Warranty: the Developer is solely responsible for any product warranties. 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) for the App; to the maximum extent permitted by applicable law, Apple will have no other warranty obligation whatsoever with respect to the App.
Product claims: the Developer, not Apple, is responsible for addressing any claims relating to the App, including product liability claims, any claim that the App fails to conform to any legal or regulatory requirement, and claims arising under consumer protection or similar legislation.
Intellectual property rights: in the event of any third-party claim that the App infringes that party’s intellectual property rights, the Developer, not Apple, is solely responsible for the investigation, defence, settlement, and discharge of that claim.
Legal compliance: you represent and warrant that you are not located in a country subject to a U.S. Government embargo or designated as a “terrorist supporting” country, and that you are not listed on any U.S. Government list of prohibited or restricted parties.
Third-party terms: you must comply with any applicable third-party terms of agreement when using the App.
Third-party beneficiary: Apple and its subsidiaries are third-party beneficiaries of these Terms, and upon your acceptance of these Terms Apple will have the right (and will be deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary.
Developer contact: for questions, complaints, or claims regarding the App, contact [email protected].

9. Privacy

The App collects no personal data and makes no network requests at runtime. See the Privacy Policy, which forms part of these Terms.

10. Changes to these Terms

The Developer may revise these Terms at any time. Revisions take effect once published on this page with an updated date above. Continued use of the App after a revision constitutes acceptance of it; if you do not agree, stop using and remove the App.

11. Term and termination

This licence runs from the moment you install the App until terminated by you or the Developer, and terminates automatically upon your breach of any provision of these Terms. On termination you must cease using and remove the App. Sections 5, 6, 7, 8, and 12 survive termination.

12. Governing law and jurisdiction

These Terms are governed by the laws of Taiwan (Republic of China), excluding its conflict-of-law rules. Disputes arising from these Terms shall be submitted to the Taiwan Taipei District Court as the court of first instance, without prejudice to any rights or choice of forum you may have as a consumer under the mandatory law of your place of residence.

13. Miscellaneous

These Terms constitute the entire agreement between you and the Developer regarding the App. If any provision is held invalid or unenforceable, the remaining provisions remain in effect. A failure or delay in exercising any right under these Terms is not a waiver of that right.

14. Contact

Questions about these Terms: [email protected]