Terms of Use
Last updated: November 2, 2026
These terms set out the conditions for using SEIRAKU ("the App").
1. Purpose
The App is an educational tool for learning about celestial mechanics. Content is simplified for education. For professional or academic use, consult reliable textbooks and references.
2. Intellectual property
All rights to the App's source code, design, text and images belong to the developer, Fuji Bit Inc. Copying or redistribution without permission is prohibited.
3. Disclaimer
The simulations are simplified educational models and must not be used for mission planning or other real decisions. The developer is not liable for any damage arising from use of the App's information.
4. Ads
The App displays ads. Advertisers are responsible for the accuracy and reliability of ad content.
5. Changes
These terms may change without notice.
6. Governing law
These terms are governed by the laws of Japan.