title: Allocation Instruments for iOS: compare memory of two snapshots
body: <p>In my situation I continuously enter one scene, than exit and so on... So <code>Live bytes</code> amount must be the same while reentering the scene, but it grows up by 3Mb on each enter.</p>
  
  <p>I want to find memory that remains from previous scene. Memory Leak instrument shows no leaks.
  How can I compare two "snapshots" of memory to highlight differences in allocations?</p>
  
  <p>Previous scene snapshot:
  <img src="https://i.stack.imgur.com/v4eMx.png" alt="enter image description here"></p>
  
  <p>After reentering:
  <img src="https://i.stack.imgur.com/xdpEx.png" alt="enter image description here"></p>