Smart Product Filter & Search

I have been using this app for well over a year now, and have been recently seeing the performance of this app drop dramatically! The app crashes, meaning your filters on your website will not work, load or appear. The Sync button fails, and you are left waiting hours-on-end for a response from the App developers with a fix, which makes you lose out on sales and gives your customer a bad experience. Do not bother with this app. Find an alternative. I am.