Quite good

app among alternatives.
Some ideas:
- ! make able to set different intervals of repetition (not just "specific days", e.g. every three days, etc.);
- add an icon at the calendar using single tap, not double;
- make a number of a date observable behind an icon;
- make good AppToExcel export;
- make able to calculate quantity per arbitrary time interval;

m@tisse about Habits Pro, v6.1.0