Hydration Tracker

Track daily water intake, set hydration goals, and get drink reminders. Use when logging water, setting targets, or reviewing weekly intake trends.

A daily water intake tracker that helps you build and maintain healthy hydration habits. Log every drink, set personalized daily goals, check your progress throughout the day, and review weekly summaries — all from the command line with local-only data storage.

Commands

Command	Description
drink [ml]	Log water intake in milliliters (default: 250ml). Shows running total and goal progress with celebration when goal is reached
cup	Quick-log a cup of water (250ml) — shortcut for drink 250
bottle	Quick-log a bottle of water (500ml) — shortcut for drink 500
today	Display today's total intake vs. daily goal, with remaining amount or goal-reached indicator
goal [ml]	Set your daily hydration goal in milliliters (default: 2000ml)
check	Check if you're on track — compares current intake against expected intake based on time of day
week	Show a 7-day hydration summary with daily breakdowns, weekly total, and daily average
history [n]	Show hydration history for the last N days (default: 7, max: 30)
stats	Display overall statistics — total days tracked, total intake, and average daily intake
remind	Get a random hydration tip (e.g., "Drink a glass of water before each meal")
info	Show version info (v1.0.0)
help	Show all available commands with usage examples

Data Storage

• Data directory: ~/.water_reminder/
• Intake data: data.json — JSON object mapping dates (YYYY-MM-DD) to cumulative daily intake in ml
• Goal config: goal.json — stores your current daily goal (default: 2000ml)
• Max history: 30 days of lookback for the history command
• All data is stored locally in JSON format; no external services, accounts, or network access required

Requirements

• Bash 4+
• Python 3 (standard library only — used for JSON read/write)
• Standard POSIX utilities (date, seq)
• No API keys or external dependencies

When to Use

1. Building a daily hydration habit — log each drink throughout the day and let the progress tracker keep you motivated with goal-reached celebrations
2. Checking mid-day progress — use check to see if your intake is on track relative to the time of day, so you can catch up before evening
3. Reviewing weekly trends — run week to see a 7-day summary with emoji indicators showing which days you hit your goal
4. Adjusting your hydration goal — use goal to increase or decrease your daily target based on activity level, weather, or health needs
5. Getting gentle reminders — run remind for evidence-based hydration tips to keep healthy habits top of mind

Examples

bash

# Log 300ml of water
hydration-tracker drink 300

# Quick-log a cup (250ml)
hydration-tracker cup

# Quick-log a bottle (500ml)
hydration-tracker bottle

# Check today's progress
hydration-tracker today

# Set a custom daily goal of 2500ml
hydration-tracker goal 2500

Example Output

text

$ hydration-tracker drink 300
Logged 300ml. Today's total: 1200ml / 2000ml.
Almost there! Keep going!

$ hydration-tracker today
Today's intake (2026-03-18): 1200ml / 2000ml
Remaining: 800ml

$ hydration-tracker week
--- Weekly Hydration Summary ---
2026-03-18: (1200ml / 2000ml) 💧
2026-03-17: (2100ml / 2000ml) 🎉
2026-03-16: (1800ml / 2000ml) 💧
...
Weekly total: 12300ml
Daily average: 1757ml (Goal: 2000ml)

$ hydration-tracker remind
💧 Hydration Tip: Drink a glass of water before each meal.

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