I'm trying to optimize my setup which is rather clunky with Todoist, Fantastical and Notion and thought that this might be the killer. No other calendars than google made me hit the cancel button straight away tho.

Idea seemed good but even if exchange calendar would be there, it still is a bit too rough (from a 5min session) in terms of features/UI to warrant this cost. With the plethora of similar apps, if you'd up the price to the full $14/month, I'd be amazed if this will become a big thing.

If someone from todoist is reading this thread, please take note how awesome a drag-and-drop todo-list to calendar functionality can work!