When comparing Fantastical 3 vs Rainlendar, the Slant community recommends Rainlendar for most people. In the question“What are the best calendar apps for Mac OS X?” Rainlendar is ranked 11th while Fantastical 3 is ranked 16th. The most important reason people chose Rainlendar is:
Your calendar data doesn't need to be stored with your computer. Data can be retrieved from Google, RTM, and even Outlook. (With the pro version removing annoying unregistered marks)
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Amazing usabiliy
It has a neat design and gives a great overview on events of a day. Adding and removing events is easy.
Pro Joining Conferences via context menu or hyperlink in event on calendar
You are late and you have to join a call, you want to be fast.
Pro Integration of Google Meets when creating events
Pro Integration
Your calendar data doesn't need to be stored with your computer. Data can be retrieved from Google, RTM, and even Outlook. (With the pro version removing annoying unregistered marks)
Pro Blends in with the desktop
This calendar stays out of your way, while remaining readily available to tell you what's coming up.
The Shadow skin make it look like a wallpaper calendar, but has the benefit of being interactive.
Pro Customizable
Take control of your calendar by scripting new functionality, take skins already created, or just disable all the fluff.
Rainlendar provides a platform to present your data in the way you desire.
Cons
Con Yearly subscription
Even though you might also use cardhop, subscription based models are unpopular.
Con Can be unstable
The calendar crashes from time to time when entering new data.