Progressive enhancement
Browser compatibility
The application uses standard browser technology and provides a fallback when direct save-back access is unavailable.
Edge and Chromium-based browsers
These browsers normally provide the smoothest user-selected file workflow. The browser asks permission before a site can write to the selected file.
Firefox and Safari
Opening a project file works through the normal file chooser. Saving may download an updated file that the author places in the chosen folder.
Mobile devices
The site is responsive and the quick calculators are mobile-friendly. Large multi-book project management is usually more comfortable on a desktop or tablet because of wide reports and extensive data entry.
No guarantee of permanent compatibility
Browsers and operating systems change. The site is provided as a free self-service resource and may need future updates.