How to figure out what's crashing on iOS


I have an app that crashes on launch, on iOS devices. I suspect it’s memory related. If I remove all of the materials, and delete all of the textures, it runs fine.

So I’m going on the assumption it’s material or texture related. There are also a lot of light maps in the scene.

How can I figure out what is taking up so much memory?

*** I’m keeping this vague and not discussing what I already tried, because it’s possible I missed something. I’ve been fighting this for months and I am now convinced I’m just missing something obvious ***