It's not an app, but I use a kids erasable tablet thing I picked up on clearance. I have used MyFitnessPal and Fat Secret in the past but this time around I realized that apps don't really provide much value (for me at least). I don't need to keep a history of my caloric intake and I certainly don't want that data feeding some insurance company or AI model. For my needs at least, the only thing that matters is if I hit my calorie goal or not, the rest is just noise.
Having the calorie values of most food in the app is nice, but searching is just as fast.