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Terms of use

Plain-language terms. Use the app freely; do not rely on it where safety or religious or legal obligations depend on it.

Use

Moonlog is provided free of charge, as is, without warranty. You may use it for personal purposes. Do not attempt to disrupt the website.

No guarantee of accuracy

Moonlog is a logbook. Solunar windows are a tradition, not a forecast, and the Moon Test reports statistics of your own data without guarantees. It is not a safety or navigation device and not a legal reference. Follow local fishing and hunting regulations and safety practice.

Your data

Your data stays on your device. You are responsible for backups; use the export feature. We cannot recover data you delete or clear from your browser.

Third-party content

Moon calculations use the open-source SunCalc library (BSD-2-Clause). Fonts Inter, Space Grotesk and JetBrains Mono are served under the SIL Open Font Licence.

Changes

These terms may change. Last updated 7 November 2026.