The interface is very intuitive, I have no complaints about the user interface. They have a very large amount of channels to add and all of them look great. The sync is easy and fast. I have a very large inventory that is constantly growing, this system has helped me to stay up to date with my listings and to keep track of everything in one place. If you are looking for a tool to keep you updated with all your inventory and to sync your channels easily and quickly, then Listing Mirror is a great solution that can help you with this. The fact is that I can easily keep my inventory up to date. Thanks to the sync, I can easily keep track of all my inventory, it also makes it much easier for me to find what I need to fill the orders that I am receiving. It is a very useful tool for a business that I like being able find what is selling online so that i do not have too much unused stock laying around my house -.- It can be frustrating sometimes but this service has been very helpful for me thus far as everything was uploaded correctly within only 1 day after purchase (which took about 5 days). This helped tremendously because now it takes less than half an hour each week spend sorting through items instead of 2-3 hours per month or more if there wasn't something listed here already!!