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Disclaimer: I'm mostly here for the food porn, I don't really prep lunches or whatnot these days
When planning my dinners for the week I use "Food Planner" by MiniMobile from the Google Play store. I ignore most of the features and don't pay for premium.
What I DO use it for is listing out what dinner will be on what day under the calendar feature. I use the weekly mode for actual planning, but there is a monthly view that shows which days are planned and which days are unplanned.
You have to have a "recipe" for everything on your calendar, but the only requirement on the recipe card is the name. You CAN go into the recipe and write out all the cooking instructions, times, and nutritional info. Even add a photo. The only thing I do on the recipe card is look at the calendar where it shows all the dates I had this item and how often I have this item.
On the weekly view there is even an option to save the week so that later you can paste a pre-planned week onto another week!
There is an "inventory" section where you can track what you have on hand and a "groceries" section that I believe is supposed to generate a grocery list based on the ingredients in the recipes you have planned for that week. All I know about these sections are their names since I don't use the full functionality.
Hope this helps. Best of luck!
I highly recommend an app called Food Planner
https://play.google.com/store/apps/details?id=dk.boggie.madplan.android
It combines meal planning, recipes, and groceries into one workflow. You can import/enter in your own recipes (or buy entire plans via IAPs) which you can add to a calendar, which then create a grocery list. It can sync multiple users, which works well for my family, as my wife hates meal planning, but does all the shopping, as I can create the plan, which she can then review (and edit if she likes) then have it build the grocery list for her.
might not have the picture aspect you're looking for, but... Foodplanner https://play.google.com/store/apps/details?id=dk.boggie.madplan.android