Habit tracker: Kỷ luật thép

Rule your world, write your legend. This application is your ultimate companion for building life-changing habits and maintaining iron discipline. Whether you want to quit a bad habit, learn a new skill, or improve your health, our 7-21-30 days framework helps you rewire your brain and turn conscious effort into natural behavior. CORE FEATURES: The 7-21-30 Days Challenge Framework Psychological studies show that it takes 21 days to form a habit and 30 days to cement it. Choose any habit and challenge yourself to maintain a continuous streak without breaking it. If you miss a day, you must start from scratch. This strict approach builds genuine discipline. Custom Habit Creation Create your personal rules. Name your habit, define the detailed actions required, and choose a custom cover image to keep yourself motivated. The flexibility allows you to track anything from reading books to daily workouts. Daily Check-ins and Mood Tracking Log your daily achievements by ticking the completion box. You can also write down your thoughts in a daily journal, record your mood, and even upload proof photos to visually document your transformation over time. Advanced Statistics and Analytics Stay informed about your progress with an intuitive dashboard. View your weekly productivity bar charts, 12-week activity heatmaps, completion rates, and your longest streaks. Understanding your data is the first step to improving your consistency. Complete Data Privacy and Export Your data belongs to you. The app works entirely offline without requiring any account registration. You can export your entire habit history as a CSV file to view in Excel, or backup and restore your progress using JSON files when changing devices. Elegant and Distraction-Free Design Enjoy a modern interface with beautiful glassmorphism effects, smooth animations, and full support for both Dark Mode and Light Mode. The minimalist design ensures that your focus remains entirely on your goals. Start your journey of discipline today. Overcome milestones, achieve your medals, and watch yourself become the person you have always wanted to be. Consistency is the key to mastery.