In my experience &quot;flat design&quot; seems to have become synonymous with hidden and undiscoverable. Metro and Material were&#x2F;are horrible in this respect (I don&#x27;t use iOS so I don&#x27;t know how Apple&#x27;s version fares in that regard).<p>My experience is that it seems to be based on the philosophy of &quot;just touch things to learn what they do&quot; but then you&#x27;re constantly punished with &quot;oh, you touched something so things changed&quot;. It&#x27;s a minefield.<p>It&#x27;s not particularly the &quot;flat&quot; design that&#x27;s at fault here, but it&#x27;s lumped with this simultaneous trend of feature deletion and cryptoUI.