Great effort. Not yet perfect, but helped me out big time. Only big issue: Firefox iPhone 14 Pro Max shows my site in mobile properly (most other app choices do not, but with real phones there is no issue). Chrome version does not for iPhone 14 Pro Max, so reveals that app is inconsistent. I suspect in most cases my jquery to detect mobile devices is not recognized by your app: "// Detect if the device is a mobile phone (excluding iPads)
if (/Mobi|Android|iPhone|iPod/i.test(navigator.userAgent)) {
// Dynamically append the mobile-specific CSS file using the baseURL variable
loadCSS..."

Why are you putting "display: block !important" on my body tag?

The functionality is great. My only gripe is that the "Remove advertising" popup advertises $4.90/year and then after you actually create your account it turns out to be $4.90/month. Hopefully it's just an oversight rather than a bait-and-switch but it feels grimy nonetheless.

Cannot rotate and cannot scroll

Easier to use than the built-in DevTools, but the ads are quite annoying