The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
This app is good in theory... It was easy to install, and the styling was nice. It has three major flaws, however, that led me to uninstall it:
1) It applies price breaks when quantities go up... but it keeps those price breaks when quantities go down. So, a user could add 5 items to the cart, get the price break, and then from the cart page reduce the quantity to 1 and still get the discount.
2) If you have a product with multiple variants expect lots of setup. You have to set a price break for EVERY variant, and some of my products have 40 or more. There is no way to "bulk" add the same discount tiers for every variant of a product.
3) It is really laggy. It takes a while to load the price breaks onto the product page, and the cart page takes a while to update. I could see lots of customer confusion.