Xamarin forms IOS app size increases from 42.8 MB to 108 MB after certification
<p>My app size increases from 42.8 MB to 108 MB after certification, according to IOS documentation</p>

<blockquote>
  <p>When your app is approved for the App Store, it is encrypted with DRM and recompressed. The encryption and DRM will increase the file size. The exact size of the increase varies, but can be significant if the binary contains a large proportion of contiguous zeros. The final size for your app after the encryption has been added cannot be determined or guaranteed in advance.</p>
</blockquote>

<p>What does it mean by </p>

<blockquote>
  <p>can be significant if the binary contains a large proportion of contiguous zeros</p>
</blockquote>

<p>I wanted to set Link behavior to "Link all assemblies" but my app crashes if I set that. 
Please suggest me best way to reduce size.</p>