Your workbook
Everything you have entered in the record sheets, your setup and the chapters you marked done, in one place. Export it as a file you keep with your receipts and warranties, import it on another device, or print the whole workbook.
For a first pass, the essential sheets depend on what you are doing. Choosing: Rooms, the Comparison sheet and, once something is in, the Installed register. Caring: the Installed register and the Care schedule. The Sample tests and the Stain and damage log can wait until you have a sample or an event.
Browser storage is convenient and fragile. It is cleared when you clear site data, is empty in private browsing, is not shared between browsers or devices, and can be lost to browser updates or storage limits. Export a copy whenever you have entered something you would hate to lose, and print the sheets you rely on.
What is in your workbook
Printable workbook
A read-only rendering of every sheet, in contents order, for printing or reading through. Edit each sheet on its own page. Empty sheets are skipped.
The workbook records your plans, your notes of what others told you, and your decisions. It is not a warranty, a contract, an inspection or a test result. Where a sheet records an answer from a maker, an installer, a landlord or an inspector, the record is yours; the answer is theirs. Keep the original documents (receipts, warranties, care sheets, lab reports) with the export.