Turn on a page loader so slow pages never look frozen, turn on pull-to-refresh so people can reload with a swipe, and let the app's offline screen handle lost connections. If your app must work fully without internet, build it from HTML or a ZIP instead of a live website.
Page loader
The loader shows while a page is loading: a circular spinner or a thin progress bar along the top, in your theme colour. Builder Pro adds branded loaders with your app icon. A progress bar suits content sites; a spinner suits web apps where whole screens change.
Pull-to-refresh
Swipe down from the top to reload the page — the gesture everyone expects in an app. Turn it off only if your site has its own scrolling areas at the top that clash with it, such as a map.
Offline screen
When there is no connection, a website app shows a clean "no internet" screen with a retry button instead of Chrome's dinosaur page. Pages the user already visited may still load from the cache.
When to choose HTML or ZIP instead
A website app needs the internet because the site lives on your server. If the app must work on a plane, in a classroom without Wi-Fi or in the field — a calculator, a guide, a game, a reference — build it from HTML or a ZIP so everything is inside the app.