Miscellaneous
Habit Tracker: Daily Habit Tracker with Streak Counter
Track daily habits with a visual grid, streak counter, and localStorage persistence. Add habits, mark completions, and watch your streaks grow. No account required.
Add New Habit
No habits yet. Add one above to start tracking!
Habits are saved in your browser's localStorage. Clearing site data will reset them.
Habit Tracker
Build better routines by tracking your daily habits. Add any habit, mark it complete each day, and watch your current streak grow. All data is saved in your browser's localStorage: nothing is sent to any server.
How to use
- Type a habit name and pick a color, then click Add Habit.
- Click a day's circle to mark it complete (or unmark it).
- The Streak column shows consecutive days completed up to today.
- Hover a row and click ✕ to delete a habit.
Columns explained
- Grid: the last 21 days. Today's column is highlighted.
- Streak: current consecutive-day streak (🔥 when > 0).
- Best: your all-time longest streak for that habit.
- Total: total days completed ever.
Privacy
All habit data is stored in your browser's localStorage under the key
habit-tracker-habits. Clearing your browser's site data will erase it. Nothing is
uploaded or shared.
The habit loop
According to James Clear's Atomic Habits and Charles Duhigg's research, habits follow a four-part loop: cue -> craving -> response -> reward. The cue triggers the habit; the craving is the motivation; the response is the behavior itself; the reward reinforces the loop. Understanding which cue triggers a habit you want to change-or build-is more effective than relying on willpower alone.
The popular "21-day" claim for forming a habit has no scientific basis. Phillippa Lally's 2010 University College London study found habit formation takes an average of 66 days, ranging from 18 to 254 days depending on the habit's complexity.
Habit stacking
Habit stacking pairs a new behavior with an existing one to leverage an established cue: "After I [CURRENT HABIT], I will [NEW HABIT]." For example: "After I brew my morning coffee, I will write one sentence in my journal." The existing habit provides a reliable cue that removes the need for motivation.
Tracking best practices
- Track streaks but apply the "never miss twice" rule: one missed day is an accident; two missed days is the start of a new (bad) habit. Resume immediately.
- Binary tracking: done/not-done tracking is more reliable than intensity ratings because it eliminates daily judgment calls.
- Track the minimum: if your habit is "exercise," count a 5-minute walk as a success on low-energy days. Consistency beats intensity for long-term behavior change.