Stock, pricing, and worksheet tools
Browser-based calculators for stock and pricing decisions, paired with downloadable inventory worksheets available in English, Vietnamese, and Brazilian Portuguese for shops working on paper or across languages.
Practical web tools and structured guides
Open resources built to support daily operational tasks and careful field observation, available directly in the browser or as printable reference sheets.
Car audio observation and record guides
Publicly available listening checklists, a tuning work log, and a noise observation guide for documenting in-car acoustic observations by ear. Dedicated car audio software remains in development and is not available for download.