One problem I see is your sorting does not work properly.

I sort my lists as follows:

First: Due Date

Second: Priority

Third: Alphabetical

The Due Date & Priority seem to be sorting properly.

However the Alphabetical sorting is not & seems to be somewhat random.

The Toodledo website sorts in this order:

1st: Special Characters (For Example - !, #, $, &, * , ...)

2nd: Numbers

3rd: Letters

Can you correct this issue in future versions?