expo camera captured images storage

I am using expo-camera to capture photos and use the in the app. Expo documentation mentioned that the pictures taken by the camera are stored in a temporary memory (cache). My understanding is that this temporary memory is supposed to get cleaned and reset by the OS system, but when testing on android devices and monitoring the storage I noticed that after using expo camera and taking a picture , the storage increases (both cache + data) and even after I close the app the storage remains increased (IOS behaves differently). so my question is:

what happens to images captured by expo camera?
is the temporary cache supposed to be cleared and should I be worried about the increase of storage on android?

Thanks

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