*bump*
Here are some of the apps I've found, though I've only tried one so far:
MealBoard - This one you can search for (and I'm thinking enter in?) your own recipes, and it helps populate a nice meal calendar for you. Additionally it'll make a shopping list for you for the ingredients you need for your meals, and supposedly even mark down the aisles you need to go down for your local store? Dunno how/if that works well... Seems to be iOS only, as I'll never get to try it, lol.
MealPlan - Very very basic meal planning app if you don't want all the bells and whistles of the others. Basically you put meals into the calendar, and viola, super easy way to track and make sure you planned out *enough* meals for the week (my personal weakness). Apparently it can make a grocery list for you too, but I doubt it's as in depth as any of the others here. Also I guess the calendar is easy to print out and put on your fridge and whatnot.
Yummly - this is more a recipe app. This is the one I've tried but for me, it wouldn't work too well... I'm on keto, and their low carb options either weren't low carb enough, or had the carbs macro wrong. However, for someone not on as a restricted diet, it seems quite helpful for browsing and finding new recipes. It makes a grocery list too, of course.
Sidechef - Not meal planning, but looks super helpful for cooking newbies (like me). You look up recipes, etc etc... but SideChef shows you step by step how to actually make the dish. Extremely helpful for a plethora of reasons, since I'm sure not everyone knows what a bunch of those fancy cooking techniques are. I'm excited to try it out, but again with my dietary restrictions, I doubt I'll find much I can actually use.
Hope these help a bit