The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
I don't know it works or not, I have installed this app and optimized around 2300 images, after that for some reason I uninstalled this, and I installed again, its again saying again it need to optimise 2300 images, although I already did that and paid around 16$ for that :(
all this app done was scaled the images smaller and quality of images are bad when scaled up on product pages, not really "optimize" them. any tool incl MS paint can do that, worst 0.56$ i ever spent. buyer beware
Not very much helpfull, as I still get warnings that some images are not optimized