Hi @Vladimir,
unfortunately web elements do not work in the apps as far as I know; I use basic ui in a web browser/kiosk mode on my devices.
Also the example will not work with OK 2.1 anymore, as stylesheets it used from habpanel are no longer present/at the same place.
If you go for the basic ui approach I recommend to have a look at
on how to inject custom css; then also the default controls (which are compatible with the apps) can be used. But the style will only work in the browser as well.
with kind regards,
Patrik