title: Does flutter take care of all screen sizes
body: <p>I had an app idea and i want to develop it in either flutter or react native. I chose flutter because I want to learn a new language (Dart) and i know it's still in beta but I don't need to care about a lot of users for at-least 2-3 months since i am gonna learn dart first and then develop it. So my question is </p>
  
  <ol>
  <li><p>Do i have to take care of different screen sizes just like in android or does flutter handle that for me?</p></li>
  <li><p>Do i have to take care of API levels like android or does flutter take care of that? Thank you.</p></li>
  </ol>