System calendar does more

This calendar doesnt sync across multiple devices without using the cloud. The task and note lists will sync according to the account that is logged into PlannerPro. For the calendar to sync you have to sync to the cloud, then sync the other devices calendar to the cloud. The app also does not have the ability to invite other attendees to an event. Im syncing this calendar to my system calendar, then editing the event in my system calendar to invite others. Or Im just creating the event in my system calendar. Completely defeats the purpose of paying for an app that should have more functionality than the system calendar. I sent two emails to the developers, they responded to one to inform me about syncing with the cloud. I dont understand why the calendar doesnt sync by the account Im logged in with. Overall Im disappointed.

AK8229 about Planner Pro - Daily Planner, v3.4.2