I like MealPlan as the product name. Most people who went to college are familiar with that term. For the domain you could do something like MealPlanit.com or GetMealPlan.com, etc.

MealGrid is good too. I think you need to find the true value proposition of your business and see how it applies to your target consumer. So, it wouldn't be "A site to revolutionize meal planning:, it would be something like, "Know what meals to eat ahead of time.". Hopefully, you get my point - just focus on the solution that the customer is getting. Then, have that drive the actual name.

Brainstorm:

MealPrep MealWeek MealWeekly FoodPlan MealPlanet GoodMeals MealsByWeek MealsInAdvance MealsAhead MealsOnSchedule