A Twist of Yarn review for Sumtracker Inventory Manager

I had a trial version of this app to help with purchase orders. I synched the inventory, but did not allow it to make adjustments through the app screen, as all my staff access the inventory from mobile POS. I discovered that every time there was an adjustment in our inventory - adding stock, accepting refunds, etc., after a short period of time (sometimes hours, sometimes days after!) the app would reverse the change, removing the inventory we added or adding inventory we manually removed! This was super frustrating, as then our stock was out. I went through the apps dashboard to try and see a history of changes to know what to fix, but their internal system said there were no changes on the app's part. However, when filtering through the Shopify system, I was able to find 27 times the app reversed our changes - sometimes multiple times for the same product after we fixed it. If I could give this 0 stars, I would. It made extra work for my staff and I, and it was very frustrating that it said it was only synching information when in reality it was adjusting things behind our back, which we did not give it permissions to do.