Technically, I should be really interested in this app as I've been spending the last few months trying to hack my diet. However, I tuned out after a few minutes. Specifically: * There is a huge wall of text. Most users (or at least me) want to learn what the product is by playing with it, not by reading. * Lots of form fields before you get value. I looked at the start point and immediately walked away. A large form scares away users. * It's weird that your height input only takes total inches instead of the normal feet + inches (users don't want to do math) * Not sure what the value is here - if I'm a consumer and I actually know the % calories across carbs, protein, and fat then why would I need this app? people who have a metric for that (like I do) probably fall into a really small niche of health obsessed people who already know how to make their diet hit their targets. I use myFitnesspal and I know exactly how to hit my targets.

Basically my summarized feedback is focus on the UX and a broader demographic. This is an awesome problem to tackle and I like your approach but I don't think many people could benefit with it the way its currently setup.

FYI this is awesome first web app - the amount of functionality you've provided is awesome.

Interesting way to go from problem to solution ... not sure if I can apply it (I don't think of my diet in terms of "I need x grams of protein today") but I bet there are people who do.

I think it would communicate better if it explained why "linear programming" is interesting here, and briefly what it is, rather than just linking to Wikipedia. Also, there are a lot of basic typos, you should run a spell-checker or something.

Awesome idea, it would be nice if the application proposes some meals that are a good match for the daily needs. It should be possible since you have already a big database of foods.