LPE

I thought I only had 2 devices set up (free account). Today I looked at devices and it tells me I have 3 - 2 for the same device (laptop), but one is Evernote for Mac and the other is Evernote Web (I also have Evernote Android for my phone). I wasn't sure what I should delete because it indicated that I had used both of them today (Mac & Web). How is that possible? I tried downloading the Mac app again in an effort to try to figure out which is the one I should be using, so now I have 4 devices. I had lost my phone for 2 days, but I have it back, but it didn't appear to be updated. Will all versions of the Mac app have my current data? I can't look because, I'm on the free version and am being forced to delete 2 of them. HELP!