Apple Watch Apps - fitness and food / calorie journal

I am looking for an app that automatically tracks your fitness (like the app that comes with iWatch (Activity - various circles that complete as you take steps, stairs etc. AND the Green runner app that automatically detects that you are going for a walk or run, etc). But something that you can add your food into, set goals and track cals, carbs, fat. Would be nice to have an app that integrates both and you can see deductions from food intake as you perform cardio, etc.