Zepto Product Personalizer

I use this app to customize the products on my site www.arejei.com (tech inspired jewelry). Users can select a letter or a year using the product personalizer and it will display their selection as binary encoded jewelry. I was able to build that using the "condition" feature (I used 70+ conditions for one product and it still worked great). I also like the fact they do lazy loading for images. Their support is also wonderful! I wish they had more bulk features but the app works great.