I have used the free app for over a year now and finding it extremely helpful and useful, especially when the calendar and Apple reminder sync were made available. I was considering going premium, but before I did that, I decided to expand my platforms and add the app to my Mac laptop so I could use it more often. When I did that, every task and every folder was now a double entry. Minor nuisance, except that when I tried to edit and get rid of one of the entries, I found that the double entries were linked and when one was deleted, both were. I had to delete the App from my Mac and start over from scratch. I am still fighting through this now big nuisance. I sent a message about this through the app but havent received any response, which surprises me since the developers are so responsive in the App Store. Now, I am unable to use some of my favorite features in the app as an upgrade screen comes up when I do. I am very leery about upgrading. I dont know if I can trust the app not to double and link tasks, which makes the app very frustrating and difficult to use.
Mwsunbeam about Any.do: To-Do List, Tasks, Calendar & Reminders, v4.7.0