5 stars from AlarmSystemStore.com
A key app that everyone should have as it will save you $ from expensive change fees from UPS. Customers often mess up their address or input a wrong zip. This adds a layer of protection against that getting to UPS who will automatically charge you an expensive address change fee.

My interaction with support has been above and beyond as well. Great app and responsive support!

We are going to use this app to help with verifying our customers’ correct addresses. We’ve never seen anything like it before, simple to setup and use.

we were looking for an App that would block invalid addresses and this was the first choice that came up in search - glad it was. it has stopped the typos and issues we were seeing before with customer address and customer order info. thanks

After 3 different customer errors in entering their address and in one case, address and apartment number was missing, I looked for a solution and found this. It's simple and has prevented any issues since.

the best part for us was super responsive support from them. other wise it did exactly what is said it would do. was able to set colors to my liking.

Does exactly what it says it will do. Have noticed not only less errors, but less customer service requests about wrong address. It is highly customizable too - I just color matched my existing theme colors. Great job devs!

This is the best app ever. Not only does this app ultimately save money for a small brand like ours, however the support team goes above and beyond in helping! Thank you to this team everyday! Definitely worth the investment!

at first we couldnt get it to work in our checkout but they helped us through getting in touch with shopify support and everything seems to be working properly now!

Works like a charm!
The zipcode validation was missing for Romania, and because this is necessary for the Cash on Delivery countries, we needed this.
Has been added quickly and works.

We have found this app very helpful! Great for the user experience and to make sure our customers products are being delivered to the correct address.