This is a huge improvement over iCalender

I use this app as my primary calendar since it offers far more flexibility in saving reminders with unlimited time choices, you can input recurring tasks with non-standard recurrence intervals and built in task list which all magically sync with iCalender and iCloud. Synching with Google is added bonus. I recommend it to all.

drbob2e about Refills - Calendar & Tasks, v3.6.2