Not sure I'll ever remember which to use (although I have read that plurals are always de, which helps :-) ). This is a godsend. I've put it on my phone so I can keep it open while I study Dutch on another device (no dropping in and out of the app on the tablet). With few exceptions there appear to be no rules regarding which to use - except for plurals mentioned above - and few, if any, dictionaries tell you which is required. Thank you!
Very useful app. I noticed one word missing (vreugde), but other than that, it's great and helps me a lot with my Dutch learning.
"HET afval" but it saids "DE afval " so you have to be careful. Not 100% correctly!!!!!
* New grammar section allows you to browse the rules that determine a noun's article!