Calamari should work fine for Small to Medium Businesses that want to keep track of their personnel's leave of absence, especially if they have different rules based on location, experience, etc. It also works adequately to allow for PTO to be approved based on a specific org structure (manager, then HR, etc).
Working with my rep is so easy and has been the selling point on this platform. I like that I don't have to think about it much, love the Slack integrations for my team and how easy it was to transition from our old process into Calamari. It's simple, clear, and for a small team, it has everything I need. The customer support team has always responded promptly when I need anything, and we were even able to extend our trial period in the beginning and converted to a paying customer shortly after.
It was the only system that provided all of the features we required, including actiTIME, and was comprehensive enough to calculate various types of outages. Contactability with customer service, which is extremely quick, helpful, and friendly, and always resolves my problems, even when they are unique to my organization. I have faith that things will get a lot better.