Sumtracker Inventory Manager

Fast syncing for our 4 stores, it has an easy to navigate interface and the price is very reasonable, especially compared to the competition's apps, (many of which we've used). Don't have a review of support, but we really haven't needed it...this app just works. Very happy so far.

EDIT: 09/28/26 - have been using Sumtracker for almost 4 years. They have decided to increase the price 500% for the same features we have been paying $24/ month for years. Goodbye.