Is cross-platform development worth learning : <p>I have been an Android developer for 1,5 years now and I thought about building an app for both <code>IOS</code> and <code>Android</code>. I have read multiple posts and questions about cross-platform developing. </p>

<p>Most of them are rather negative saying that <code>cross-platform</code> developing results in slow applications and also that an application should be approached differently since both <code>Android</code> and <code>IOS</code> are different.</p>

<p>The reason I am asking this is because most of the posts and questions I have seen so far are pretty old and I am asking if <code>cross-platform</code> developing is something I should pick up or just learn <code>IOS</code> development seperately. </p>

<p>If <code>cross-platform</code> is worth it nowadays then which language or tool should I use for it?</p>
