How the Habit Consistency Score is calculated

Your score is designed to feel fair. Two people can have the same number of “done” days but a different score because the tool also considers your goal frequency and whether you’re building momentum. Here’s the full breakdown in plain English, plus examples you can replicate by hand.

First we translate your weekly goal (for example 5×/week) into the number of habit sessions you were aiming for in your chosen window. The key is that goals are weekly, but your time window might be 14, 30, or 60 days. So we scale your goal:

• weeksInWindow = windowDays / 7
• targetSessions = goalPerWeek × weeksInWindow

Example: last 14 days is exactly 2 weeks. If your goal is 5×/week, your target is 5 × 2 = 10 sessions. If your window is 30 days, weeksInWindow is 30/7 ≈ 4.29, so targetSessions becomes goalPerWeek × 4.29. We keep a decimal target internally (because life isn’t perfectly divisible by 7), then we use a practical rounding approach when we compute completion rate.

Next we count how many “done” days you tapped. That’s your completedSessions. Then we calculate a completion rate:

• completionRate = completedSessions / targetSessions (capped at 1.20)

Why cap at 1.20? Because doing extra should help, but it shouldn’t explode the score. If you aimed for 3×/week and did it 7×/week, that’s awesome — but the score’s job is to reward repeatability, not to encourage burnout.

Consistency is not only “how many” but also “how regularly.” Two people with 10 completions can feel totally different: one might have random bursts, the other might have a calm pattern. We capture that with two small bonuses:

• streakBonus rewards your current streak (up to +10 points).
• bounceBackBonus rewards returning quickly after missing days (up to +5 points).

Bounce-back matters because most habits die after a slip. If you miss a day and return within 24–48 hours, that’s the “identity win” that builds long-term habits.

A habit with long inactive stretches often feels unstable even if you did a decent number of sessions. So we add a small penalty if you have a gap of 5+ consecutive missed days inside the window. It’s not meant to shame you — it just reflects that the habit isn’t fully anchored yet.

Putting it together, the score is:

• base = completionRate × 85
• score = clamp( round(base + streakBonus + bounceBackBonus − gapPenalty), 0, 100 )

• 85–100: Automatic habit territory — you’re operating on identity and routine.
• 70–84: Strong consistency — dependable pattern with minor slips.
• 50–69: Building rhythm — you’re improving, but it’s not stable yet.
• 30–49: Early stage — great time to simplify and reduce friction.
• 0–29: Not established — start smaller, anchor to a trigger, and win 3 times this week.

• Example A (healthy consistency): 14-day window, goal 5×/week (target 10), completed 9. completionRate = 0.9 → base ≈ 76.5. Current streak 4 days → streakBonus ≈ +2. Best bounce-back = 1 day → +4. No big gaps. Score ≈ 83 (strong consistency).
• Example B (bursty): 14-day window, goal 5×/week (target 10), completed 9 — same completion rate, but pattern is 6 days off in a row and then a burst. StreakBonus low, gapPenalty higher. Score might drop to 70–76 because the habit isn’t anchored yet.
• Example C (low goal, high output): 30-day window, goal 3×/week (target ≈ 12.9), completed 16. completionRate = 1.24, capped at 1.20 → base = 102, then capped by clamp to 100 after bonuses. You can hit 95–100 without needing perfection.

How this tracker helps you stay consistent

Most habit tools show raw counts. That’s useful — but it doesn’t tell you what to do next. This tracker is built for momentum: a score you can improve with one smart change.

• Pick a 14-day window and update it once a week.
• Try to raise your score by +5 to +10 each week, not by becoming perfect overnight.
• Share your weekly score with a friend for accountability (screenshots work great).

• Lower the goal until you can win it for 2–3 weeks.
• Reduce friction (prep, environment, one-click start).
• Use a trigger: “After I brush my teeth, I do 2 minutes.”

• Focus on bounce-back speed. Don’t let a miss become a week.
• Design a “minimum version” of the habit for busy days.
• Track the same window for 3 weeks and watch stability grow.

• Keep the habit stable; increase difficulty slowly (not frequency).
• Consider stacking: attach a second small habit to the same trigger.
• Protect the routine with a default time and a “travel plan.”

Frequently Asked Questions

• Is this a full habit tracker app?

  It’s a lightweight browser tool. The goal is speed: tap your last days, get a score, save a snapshot. If you want a full calendar habit tracker, use this alongside one — or use it as your “weekly report card.”

• Does a missed day ruin my score?

  No. This is intentionally built to reward bounce-back, because real life includes travel, sickness, and chaos. A single missed day barely moves the score; a long gap does, because it signals the habit isn’t anchored yet.

• Why do I need a goal frequency?

  Consistency depends on what you’re aiming for. Doing a habit 3 times in 14 days might be great if your goal is 1×/week, but low if you aimed for daily. The goal makes your score meaningful instead of generic.

• Can I track habits that aren’t daily?

  Yes — choose 1×/week, 2×/week, 3×/week, etc. The score automatically scales your target sessions.

• Where is my data stored?

  If you click “Save Result,” the snapshot is stored in your browser’s local storage on this device. It’s not uploaded to a server.

• What’s the best time window to use?

  Use 14 days for most habits. It’s long enough to see patterns and short enough to feel motivational. Use 30–90 days for long-term habits like strength training or language learning.

Your “Momentum Plan” (in one minute)

Here’s a simple way to improve your score fast — without needing willpower. After you calculate, read the momentum tip in your result card and do this:

• Pick a trigger: “After I ______, I do my habit.”
• Make it tiny: a 2-minute version you can do anywhere.
• Schedule 2 wins: decide two specific days/time slots this week.
• Decide bounce-back rule: “Never miss twice.”

Consistency is identity built through repetition. Start smaller than your ego wants. Win longer than your motivation lasts.