Money hungry
The app was great till the update... now its a yearly subscription....I would say it would be worth it if you could log into your calendar / account and stow your info but you are royal screwed if you change devices. YOU LOSE ABSOLUTELY EVERYTHING!!!
To say I am extremely disappointed would be an understatement. Keep with google calendar, at least you know they are free, reliable, and you wont lose anything. They dont care about anything but money.
Jepright about
Spark - Shift Calendar, v2.3.2