Answered
Save option
I think on iOS there should be an option to save a photo you take, I mean it's would be great if they let you save the photo directly from the app instead of screenshotting it
There are a lot of save/export options already available in the Lightroom app. Select an image, tap on the share icon on the top toolbar and you'll then see all the various options, most of which you can customise:
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