App crashes on iOS with "Terminated due to memory issue"

Hi everybody, my app works fine on Android, but crashes on iOS. The message I see in XCode : “Message from debugger: Terminated due to memory issue”. I tried to monitor memory in Instruments. It crashes in different place, but what I basically see is that the app runs out of the available memory, which makes me think there is a memory leak. But since it works fine on Android, I suspect that the problem is not in the app itself, but in my environment. Particular combination of plugins that don’t work well together, or something like this. I work with the last version of Ionic: 3.5.3

Any ideas how to approach it?