This is a really good idea! I like how you added dietary needs in there; it's a very others-aware addition. I also liked how you added awards to keep people interested in the app. A way you could expand on the app is to put on the homepage or loading screen a warning to check one's leftovers for mold or other signs that it is not ok to eat. Otherwise, I think that this could be a great idea for reducing food waste! Good work!