I use Astrid for my to-do list. However I can't sync the web app with the Android app.
closed as not a real question by Al Everett, Zuul, roxan, Flow♦, ce4 Oct 22 '12 at 17:34
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
Make sure that you logged in to the website with the account that you are using on your phone - you should then see tasks being synced between the web site and your Android device.