I’ve tried a bunch of meal planners and diet apps over the years, and honestly, they’re great for getting organized, but when I got serious about fitness, I realized that my routine needed more than just meal planning. I started using a few supplements from different places, and they made a big difference. I came across this site
https://goliathsteroids.com/ that’s been pretty solid for quality stuff. As for code, I’ve seen people share meal planner templates on GitHub, so maybe try looking there or on similar forums.