I'm using DueToday for about two years successfully together with Toodledo. First of all: Thank you for this great piece of software!
One thing I'm just missing is some kind of "relative" date filter: I use the 4x1 widget to have quick overview of tasks due 'tomorrow or before'. To achieve this, I've set up a filter for exactly that. The problem is that the filter translates 'tomorrow' to an exact date - for example 11th of June. But when time goes by and today would be 13th of June, my widget would still show tasks due on 11th, not these who are on 14th as I would have expected.
So my request is to have a relative date filter which always points to "tomorrow" and not an exact date. It could even be useful when filtering for tasks starting "today" or something like that..
Kind regards from Hamburg, Germany.