Add Habit Tracker app idea

Projects/1-Beginner/Habit-Tracker.md

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+# Habit Tracker
+
+**Tier:** 1-Beginner
+
+A simple application to help users track and build good habits over time. Users can add daily habits, mark them as completed, and view progress in a calendar or list format.
+
+- **Purpose:** The app motivates users to maintain consistency and visualize their progress.
+
+- **Resources needed:** None — can be built using basic HTML/CSS/JS or any beginner-friendly framework.
+
+## User Stories
+
+- [ ] User can create a new habit with a name and optional description
+- [ ] User can mark a habit as completed for the day
+- [ ] User can view a list of all habits
+- [ ] User can see a weekly or monthly progress summary
+- [ ] User can delete or edit existing habits
+
+## Bonus features
+
+- [ ] User can set reminders or notifications for habits
+- [ ] User can visualize progress with charts or streak counters
+- [ ] User can categorize habits (e.g., Health, Study, Fitness)
+- [ ] User can export or save habit data to a file or cloud
+
+## Useful links and resources
+
+- [JavaScript Date documentation](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date)
+- [CSS Grid Tutorial](https://css-tricks.com/snippets/css/complete-guide-grid/)
+- [Simple Habit Tracker Tutorial (freeCodeCamp alternative)](https://www.freecodecamp.org/news/every-time-you-build-a-to-do-list-app-a-puppy-dies-505b54637a5d/)
+- [Build a Habit Tracker App with React and Local Storage (GeeksforGeeks)](https://www.geeksforgeeks.org/reactjs/build-a-habit-tracker-app-with-react-and-local-storage/)
+- [5 Ways to Build a Habit Tracker in Notion (Thomas Frank)](https://thomasjfrank.com/5-ways-to-build-a-habit-tracker-in-notion-free-template-included/)
+- [The Ultimate Habit Tracker Guide (James Clear)](https://jamesclear.com/habit-tracker)
+- [Building a Powerful Habit Tracker in Obsidian](https://forum.obsidian.md/t/building-a-powerful-habit-tracker-in-obsidian-a-complete-guide/92884)
+
+
+## Example projects
+
+These are real-world apps that implement similar functionality.
+- [Loop Habit Tracker](https://loop-habit-tracker.vercel.app/)
+- [Habitica](https://habitica.com/)