Tweak function.
1) Indicate webview was used in Native App.
2) See webview's html source code anywhere(safari, chrome, native app and so on).
3) Modify webview's html source code, and sync it to webview.
Tips:
1) currently, code sync function not available in Safari.
2) in Safari, you can see the menu via long press a link.
Configure options from Settings.
See larger Screenshots below..