The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
This is exactly what I've been looking for: maps all my Shopify data to a spreadsheet and lets me bulk edit all my products / metafields in seconds, lets me run analysis how I see fit, and includes some nice presets / shortcuts specific to Shopify. There are some great analytics apps out there, but they generally focus on the same standard calculations and aren't very customizable. Using multiple apps is annoying + costly. I would say this takes a little more legwork then some, but for someone who knows Excel - it's perfect. This seems to be a very new app and I haven't heard much about it, but really promising so far and I'm looking forward to updates. Would love to see more fields/data (blogs/page content if possible!) as the app continues to be built. Great tech support too BTW!