I just got one of these yesterday and it's pretty amazing. I only wish there was a way to attach it to my iPhone 7 Plus without having to remove it from the case. (Currently using a black Apple leather case.)
I'm guessing that the .insp and .insv picture and video file extensions are proprietary to the Insta360 family of cameras? I wish there was a way to back them up to Google Photos. There's a download to camera roll button in the app that saves the .insv file as an .mp4 video file, but it loses the date & time metadata of the original.
@chuckkahn saving the still image .Insv to the iPhone camera roll as jpeg does save the date & time metadata of the original. Just wish the video save did the same.