Note that you need to be able to use 3rd party shipping integrations to use this app. Otherwise as others have said, the support is top-notch.
This is a good app. Great support from the staffs, especially from Suzanne. Her support and service level are outstanding! She goes above and beyond to fulfill our needs.
Unlike other apps that only need one type of weight for calculation, this app requires you to setup both the physical weight and dimension for their Smart Box calculation. This feature does not work well with the products that were selling. Also, the app layout can be better, if they are simpler and cleaner.