I’ve tried sorting every way, and my device calendar events have to be manually sorted to show them chronologically. (I tested both 12 and 24-hr time.) Not sure if this a bug or a feature request.
I have been looking for an app for my partner to help him get organized, but I am afraid w/o this it would be unusable for him. I quite like this app myself! But I would never consider the premium version w/o this feature.