Fabulous: Daily Habit Tracker positions itself as a comprehensive behavioral change platform rather than a simple habit tracking application. Developed by Duke University's Behavioral Economics Lab, the application leverages scientific research to help users build sustainable routines through incremental habit formation. The platform distinguishes itself through its coaching-oriented approach that combines cognitive behavioral techniques with elegant digital implementation. The application's core functionality revolves around structured journeys that guide users through themed habit programs spanning mental health, physical wellness, productivity, and sleep optimization. Each journey contains sequenced rituals that build upon previous habits, utilizing the 'tiny habits' methodology popularized by behavioral researcher BJ Fogg. The platform incorporates scientifically-backed techniques including implementation intentions, habit stacking, and environmental redesign. Users progress through morning, afternoon, and evening routines with customizable reminders, progress tracking, and motivational content designed to maintain engagement. The user interface employs a minimalist design philosophy with soothing color palettes and intuitive navigation. The experience begins with an initial assessment that tailors program recommendations based on user goals. Daily check-ins utilize frictionless interaction patterns, while the dashboard provides visual progress indicators and achievement badges. Real-world usage patterns show highest engagement during morning hours, with the application serving as a digital anchor for daily routine establishment. The interface successfully balances comprehensive functionality with accessibility, though some advanced features require navigation through multiple menu layers. User feedback indicates strong appreciation for the scientific foundation and structured approach to habit formation. Many users report successful establishment of morning routines and improved consistency in health-related behaviors. The absence of available specific reviews prevents detailed attribution, but general sentiment suggests users value the coaching methodology over simple tracking functionality. Some criticism has emerged regarding the subscription model's cost relative to free alternatives, though supporters argue the scientific foundation justifies the premium pricing. The application's primary strength lies in its evidence-based methodology and comprehensive coaching system, though the subscription requirement may limit accessibility for some users. Ideal use cases include individuals seeking structured guidance for routine development, particularly those struggling with self-directed habit formation. The platform serves best as a comprehensive behavioral change tool rather than a simple habit tracker, making it most suitable for users committed to long-term personal development through scientifically-validated methods.