In Xcode, if I begin a new Obj-C project I usually can find a "memory warning" method that gets called if needed, so I can dump resources.
Is there a way to monitor low memory with Pythonista? Maybe with objc_util?
A good recent discussion on free memory... https://forum.omz-software.com/topic/3844/photos-asset-get_image_data-is-there-a-memory-leak
If you mean the low memory warning,see
https://developer.apple.com/reference/uikit/uiapplicationdelegate/1623063-applicationdidreceivememorywarni?language=objc
You can swizzle the UIApplication.sharedApplication.delegate's implementaion of this, or you can also register for the UINotification mentioned in the above article.