What is the Fatigue & Energy Tracker?

It's a free tool that lets you log your energy levels throughout the day along with contributing factors like sleep, stress, activity, and hydration. It then analyzes patterns to help you understand what drives your fatigue.

Is my health data stored securely?

All data is stored locally in your browser using localStorage. Nothing is sent to any server. Your health data stays on your device.

Can I share my fatigue data with my doctor?

Yes! You can export your complete fatigue log as a CSV or JSON file, which you can print or email to your healthcare provider for review.

How does the pattern analysis work?

The tracker analyzes your logged entries to find correlations between your energy levels and factors like time of day, day of week, sleep hours, stress levels, hydration, and more. It presents findings as interactive charts and actionable insights.

How many entries should I log before patterns appear?

You can start seeing basic patterns after about 7 entries, but more detailed correlations become apparent after 2-3 weeks of consistent logging. The more data you provide, the more accurate the insights.

Free Online Fatigue & Energy Tracker (No Signup) – FreeWWW

⚡ Fatigue & Energy Tracker

Log energy levels, discover patterns, and take control of your vitality

⚠️ This tool is for personal tracking only and is not a substitute for professional medical advice. Consult your healthcare provider about persistent fatigue.

How it works: Log your energy level (1-10) along with factors like sleep, stress, activity, and hydration. Over time, the tracker reveals patterns and correlations to help you understand what affects your energy. All data stays in your browser — nothing is sent to any server. ×

Avg Energy (7d)

Trend

Best Time

Worst Time

Day Streak

Total Entries

Log Energy Entry

Moderate

1 - Exhausted10 - Full Energy

Date

Time

Time of Day Context

Sleep Last Night (hours)

Sleep Quality

Physical Activity Today

Stress Level

Hydration

Meals Today

Caffeine Intake

Symptoms / Contributing Factors

Mood

Weather

Medication Taken?

Notes (optional)

Entry History

Energy Over Time

Energy by Time of Day

Energy by Day of Week

Energy Distribution

Sleep vs Energy Correlation

Factor Correlations with Energy

Personalized Insights

Weekly Summary

Energy Heatmap (Last 6 Months)

Monthly Averages

Energy Goals

Daily Target Energy

Minimum Sleep Goal (hrs)

Daily Hydration Goal

Max Stress Tolerance

Logging Reminders

Browser notification reminders (requires permission).

Export & Backup

Download your fatigue data for personal records or to share with your healthcare provider.

Import Data

Restore from a previous JSON backup.

Data Management