Photomator app on MacBook requires restart to show new pictures

I'm using photomator on a MacBook. I use it to review and catalog pictures outside of those on Apple Photos. Whenever I add a new picture, it doesn't show up on in the folders tree. I have to restart the app in order to get the new image to appear. This is several minutes process because it re-examines all my images every time it restates. This is very frustrating and makes the app useless. Am I doing something wrong? A Google search suggests that the app may need to be refreshed to update its catalog, which is apparently what it's doing when I restart it. I'm hoping there's something I'm missing. Thanks.