What's the best iOS app for a diet tracker that automatically updates my calorie goals as I lose weight?

MacroFactor is a nutrition tracking app that distinguishes itself with a dynamic coaching algorithm designed to adjust dietary plans in response to user progress. Unlike static calorie counters, it employs a weekly check-in system where inputted weight data refines macro recommendations, accounting for metabolic changes and preventing plateaus. This feature is particularly useful for real-world scenarios like post-holiday weight correction or training for a fitness event, where consistent adaptation is key. The app includes a vast food database with barcode scanning, frequent foods lists for quick logging, and detailed micronutrient tracking to support overall health. Users report effective outcomes, such as losing body fat while maintaining muscle mass, with one review noting a 1.9% reduction in two months. Privacy is a noted strength, as the developer commits to not selling user data. However, some limitations exist, such as the inability to easily modify ingredients in pre-logged restaurant meals, which can inconvenience those customizing orders. Despite this, regular updates from the responsive team address user feedback. For individuals seeking a data-driven approach to dieting that evolves with their journey, MacroFactor offers a reliable, no-nonsense tool.