Ready to use (or buy/download) controls in appdev usually pack some ui wisdom into themselves for free, borrowing most of it from the base system.

Webdev is constant reinvention of a wheel in all sorts of wrong ways, with “components” on the same level of ui quality.

Many apps are just electron apps or vb-like (x,y,w,h) forms slapped together by someone barely familiar with a platform IDE. But the rest is absolutely superior to the “web”.