Tools run in your browser
The planning tools calculate results on your device. This site’s code does not send your answers to a server, store them in cookies, or save them in browser storage. Reloading the page resets the tool.
No analytics or sign-up forms
This version includes no analytics scripts, advertising pixels, accounts, email collection, or newsletter forms. Fonts, illustrations, styles, and scripts are served with the website. The website host may still process ordinary access logs such as IP addresses and requested pages under its own practices.
Links to other websites
Amazon purchase links and manufacturer sources open third-party websites. Their privacy, cookie, and tracking practices apply there. Affiliate URLs may contain a tracking identifier that allows a retailer to attribute qualifying purchases.
If this website changes
This notice describes the code delivered with this version. Adding analytics, forms, advertising, or other services requires updating this notice to describe those services.
Last updated: October 11, 2026.