bytesagain Hydration Tracker
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
historycommand - 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
- Building a daily hydration habit — log each drink throughout the day and let the progress tracker keep you motivated with goal-reached celebrations
- Checking mid-day progress — use
checkto see if your intake is on track relative to the time of day, so you can catch up before evening - Reviewing weekly trends — run
weekto see a 7-day summary with emoji indicators showing which days you hit your goal - Adjusting your hydration goal — use
goalto increase or decrease your daily target based on activity level, weather, or health needs - Getting gentle reminders — run
remindfor evidence-based hydration tips to keep healthy habits top of mind
Examples
# 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
$ 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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