Idioms and norms

The final area to consider for adaptive apps is platform standards.
Each platform has its own idioms and norms;
these nominal or de facto standards inform user expectations
of how an application should behave. Thanks, in part to the web,
users are accustomed to more customized experiences,
but reflecting these platform standards can still provide
significant benefits:

Reduce cognitive load—By matching the user’s
existing mental model, accomplishing tasks becomes intuitive,
which requires less thinking,
boosts productivity, and reduces frustrations.

Build trust—Users can become wary or suspicious
when applications don’t adhere to their expectations.
Conversely, a UI that feels familiar can build user trust
and can help improve the perception of quality.
This often has the added benefit of better app store
ratings—something we can all appreciate!

Consider expected behavior on each platform