Yeah, I usually have my iPhone 7+ and occasionally it's saved me when I needed a wide angle shot and didn't have a wide angle for the camera I was carrying. I never liked the iOS default JPEGs, too too for me. But with DNGs it's fantastic. Another RAW-shooting camera app is Manual. I prefer Camera+ though. And SnapSeed is very nice to use on images you wanna use on iOS. Lr Mobile has gotten much better of late with local adjustments, but I still prefer SnapSeed.
And yeah, why oh why no keywords in Lr Mobile??