I like it but...
Dues alerts dont sound on my iPhone if I have "Do Not Disturb" set to ring only for phone calls from Family or Favorites. Apples clock does make proper sounds when "Do Not Disturb" is on, so there ought to be some way for Due to do the same. I wrote to developer to ask but have not received a response. Unfortunately, there are many times that I dont want to be disturbed by my phone but need to be alerted by timers and alarms.
Dumbhead about
Due - Reminders & Timers