I bought one code first and tested it out on an eCommerce website. It works well to make a PWA, didn't slow the site down a whole lot, and I was able to submit the App to Google Play relatively seamlessly. Now I have stacked the full eight codes. It would be a great value add for news/magazine and blog type websites to drive additional traffic as well. I think it's not grown into its full potential, but given how much you have to pay even for those one-time Web2App packages offered by other companies, I think it's worth it's money right now with the promise of much more.