Effective date: 11 April 2026

These terms and conditions govern your use of The Arcana Engine (thearcanaengine.com). By using this site you agree to these terms. If you do not agree, please do not use the site.

The site is operated by Marcus Lee. References to "we", "us" and "our" refer to the operator of this site.

The Arcana Engine is a free collection of tools and calculators relating to astrology, numerology, the I Ching, crystals and related symbolic systems. All tools are provided free of charge with no registration required.

You may use this site for personal, non-commercial purposes. You agree not to:

The calculators and lookup tools on this site produce outputs based on established symbolic, numerological and divinatory systems. These outputs are provided for informational, educational and personal interest purposes only.

Nothing on this site constitutes professional advice of any kind - including but not limited to medical, psychological, legal, financial or spiritual advice. You should not make significant life decisions based solely on the outputs of these tools.

We make no warranty, express or implied, that the tools are accurate, complete or suitable for any particular purpose. Use them at your own discretion.

The content of this site - including the written text, tool designs, page layouts and original code - is the property of the operator and is protected by copyright. You may not reproduce, distribute or create derivative works from this content without prior written permission.

The tools themselves are built on open symbolic systems (numerology, the Sabian Symbols, the I Ching, planetary hours, crystal lore) which are not proprietary. The specific implementations and interfaces built on this site are, however, original works.

We aim to keep the site available at all times but cannot guarantee uninterrupted access. The site may be taken down for maintenance, updates or circumstances beyond our control. We accept no liability for any loss or inconvenience caused by downtime.

This site contains links to external websites. These links are provided for convenience only. We do not endorse, control or take responsibility for the content of any linked site.

To the fullest extent permitted by law, the operator of this site excludes all liability for any loss or damage arising from your use of the site or its tools. This includes, without limitation, any indirect, consequential or incidental loss.

Nothing in these terms excludes or limits liability for death or personal injury caused by negligence, or for fraud or fraudulent misrepresentation.

If you have any questions about these terms, please use the contact page.