Best and most effective habit app I've tried. However, adding new tasks is 
very frustrating, because the sorting feature is buggy. Sometimes the item 
you're moving disappears for a time, sometimes the item jumps out of place. 
This might sound trivial, but I have a lot of tasks, and being able to sort 
them is an essential feature for me. I'm on Android 6.0 (LG G4).