Last updated: July 2, 2026
By downloading, installing, or using Star Signal ("the App"), you agree to these Terms of Use and to our Privacy Policy, which is incorporated into these Terms by reference. If you do not agree, do not use the App.
You must be at least 13 years old to use the App. By using the App you represent that you are at least 13 and that you have the legal capacity to enter into these Terms. The App is not directed to children under 13, and we do not knowingly collect information from them.
Star Signal provides information about astronomical events visible from your location, including planets, ISS passes, meteor showers, aurora, moon phases, conjunctions, eclipses, and comets. Event visibility is scored based on weather conditions and light pollution.
Star Signal offers an optional auto-renewable subscription called "Star Signal Pro" that unlocks push notification alerts for astronomical events.
The App provides a free tier that includes browsing the tonight feed of astronomical events, moon phase information, and event details. Push notification alerts require a Star Signal Pro subscription.
Star Signal provides astronomical event predictions and weather-based visibility scoring on a best-effort basis. Event times, visibility scores, weather data, and notifications are approximations, may be delayed or undelivered, and may not be accurate. Do not rely on the App for navigation, emergency, safety-critical decisions, or scientific research.
You are solely responsible for your own safety and for any decisions you make while using the App, including travel to viewing locations, time spent outdoors, and activities undertaken at night or in remote areas. You assume all risks associated with such activities. To the maximum extent permitted by law, the developer is not responsible for any injury, loss, or damage resulting from actions you take in reliance on the App or its data.
The App relies on third-party data sources and services for weather, space-weather, orbital, launch, and infrastructure data, and for payment processing, notification delivery, and hosting. We do not control these sources and are not responsible for their accuracy, availability, or interruption. Your use of certain features may be subject to the terms and policies of those third parties.
You agree not to misuse the App, interfere with its operation, or attempt to access it through unauthorized means.
All content, design, and code in Star Signal are owned by the developer. You are granted a limited, non-exclusive, non-transferable, revocable license to use the App for personal, non-commercial purposes.
We reserve the right to suspend or terminate your access to the App at any time, with or without notice, for violation of these Terms. The sections that by their nature should survive termination — including Intellectual Property, Disclaimers, Limitation of Liability, Indemnification, and Governing Law — survive termination.
The App is provided "as is" and "as available" without warranties of any kind, whether express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, title, and non-infringement. We do not warrant that the App will be uninterrupted, error-free, secure, or that any data, score, or notification will be accurate or timely. Some jurisdictions do not allow the exclusion of certain warranties, so some of the above exclusions may not apply to you.
To the maximum extent permitted by law, in no event will the developer be liable for any indirect, incidental, consequential, special, exemplary, or punitive damages, or for any lost profits, lost data, or loss of goodwill, arising out of or relating to your use of (or inability to use) the App, even if advised of the possibility of such damages.
To the maximum extent permitted by law, the developer's total cumulative liability for all claims relating to the App will not exceed the greater of (a) the amount you paid for the App in the twelve (12) months before the event giving rise to the claim, or (b) twenty U.S. dollars (US$20.00). Some jurisdictions do not allow certain limitations of liability, so some of the above may not apply to you.
You agree to indemnify, defend, and hold harmless the developer from and against any claims, liabilities, damages, losses, and expenses (including reasonable legal fees) arising out of or related to your misuse of the App, your violation of these Terms, or your violation of any law or the rights of any third party.
These Terms are governed by the laws of the State of Washington, USA, without regard to its conflict-of-laws rules. You agree that any dispute arising out of or relating to these Terms or the App will be resolved exclusively in the state or federal courts located in the State of Washington, and you consent to the personal jurisdiction of those courts. Nothing in this section limits any rights you may have that cannot be waived under applicable consumer-protection law in your place of residence.
These Terms are between you and the developer only, and not with Apple Inc. Apple is not responsible for the App or its content. Apple has no obligation to provide support or maintenance for the App. 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); to the maximum extent permitted by law, Apple has no other warranty obligation with respect to the App. Apple is not responsible for addressing any claims relating to the App, including product-liability, regulatory, or intellectual-property claims. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you. You represent that you are not located in a country subject to a U.S. Government embargo or designated as "terrorist supporting," and that you are not on any U.S. Government list of prohibited or restricted parties.
If any provision of these Terms is held unenforceable, that provision will be limited or removed to the minimum extent necessary, and the remaining provisions will remain in full force and effect. These Terms, together with the Privacy Policy, constitute the entire agreement between you and the developer regarding the App and supersede any prior agreements.
We may update these Terms from time to time. When we do, we will revise the "Last updated" date above, and for material changes we will make reasonable efforts to provide notice within the App. Continued use of the App after changes take effect constitutes acceptance of the updated Terms.
Questions about these terms? Reach out at support@starsignal.app.