Privacy

Rock tumbler batch inputs are calculated in your browser tab. The tool does not require an account, does not upload your barrel measurements, and does not store a personal tumbling log on a server.

• No login, file upload, or API key is needed.
• Copied and printed plans are generated locally in your browser.
• Analytics, when configured, should only use safe interaction events, not raw batch notes.
• Do not email private purchase records, child information, or sensitive personal details.