A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
Separate names with a comma.
Also, if anyone knows how to "mimic" the native ios modal presentation with the unity root view that would be awesome.
Just to add on to this, I'm having this problem as well. I have a large unity application being loaded, shown and then when unloaded I have 600mb...