Dont Upgrade If You Are Using Free Version
I have been using the free version of this app for around 18 months and decided to pay the ridiculous upgrade price for the full version to remove the annoying ads. Ad removal is about all you get for the upgrade cost. The "custom calendars" are nothing special, and as a bonus for paying for the full version you get to re-enter all of your Tasks from the free version into the full version. The full version appears to be a completely separate app and does not transfer your Tasks. If I had it to do over again I would have stayed with the free version. Lastly, the customer support is very slow to respond to questions.
SuperD22 about
Refills - Calendar & Tasks, v3.9