Question: I'm looking for a tool that provides detailed nutrition guidance and macronutrient recommendations for weight loss.

For more detailed nutrition advice and macronutrient guidance for weight loss, Rex is a good option. Rex is an AI-powered nutrition and fitness coach that offers personalized calorie counting and workout advice based on photos of meals you take or text messages you send. And it's got a body scanner to measure body fat, muscle mass and other factors, with daily reports offering advice.

Another option is Body Scan. The service generates personalized workout and nutrition advice based on body data it calculates from a full-body selfie. It offers details on body fat percentage, daily caloric intake and macronutrient ratios. With video workouts tailored to your body and goals, it's a full-fitness package that doesn't require a gym membership.

Healthify is another option. The holistic health and fitness service offers personalized meal and workout plans based on advice from certified nutritionists and fitness coaches. It also offers tools to track daily progress, including calorie consumption, weight, workouts, sleep and water consumption. Features like Smart Meal Tracking and Holistic Trackers make it a good option for sustainable weight loss and overall wellness.

Last, Meals.Chat offers a simple way to track daily food intake by analyzing photos of meals or descriptions to calculate calories, macros and ingredients. It's geared for people who want to track food intake for weight loss, bulking or healthier eating, so it's easy to meet daily goals and live a healthier life.