← LAB / FASTING 16:8
TOOL.003 / FASTING CONSOLE // BY PROJECT AXIS

FASTING
16:8

A private-by-design fasting tracker. No sign-up, no server, no third-party access. Your data lives in your browser and nowhere else.

HTML · LOCAL ONLY NO REGISTRATION ZERO DATA EXTRACTION EXPORT JSON
OPEN TOOL →
16 HRS FASTING· 8 HRS EATING WINDOW· WATER TRACKING· CARB LOG· LOCAL STORAGE· EXPORT JSON· NO ACCOUNT· NO TRACKING· 16 HRS FASTING· 8 HRS EATING WINDOW· WATER TRACKING· CARB LOG· LOCAL STORAGE· EXPORT JSON· NO ACCOUNT· NO TRACKING·
§01 WHY THIS EXISTS
THE PROBLEM

I'm tired of fasting apps that force phone number verification and real-name registration. I don't need social feeds or premium subscriptions. I just want a clean, no AD, private, free 16:8 timer.

  • Every fasting app requires registration — often with a phone number
  • Data is uploaded to third-party servers without clear data policies
  • Bloated with features I never use: calorie cameras, social feeds, premium upsells
THE SOLUTION
  • A single HTML file. Open it, use it, done. No install required.
  • All data is stored in your browser's localStorage. Nothing leaves your device.
  • Three functions only: fasting timer, water intake, carb log.
  • Export your data as JSON anytime — you own it completely.
§02 WHAT IT DOES
F.001
16:8 TIMER

Set your eating window start and end time. The timer shows exactly where you are in your fast or eating window, with a progress bar and a running day counter since you started.

F.002
WATER LOG

Quick-add buttons for common amounts (250ml, 500ml, etc.) plus a custom input. Tracks daily total against your target. Resets automatically each day.

F.003
CARB LOG

Log each meal with a carb level selection (none / low / medium / high) and optional notes. Keeps a running history so you can see patterns over days.

§03 INTERFACE
Timer view
⏱️
TIMER VIEW
01 — FASTING TIMER
Water log
💧
WATER LOG
02 — WATER INTAKE
Carb log
🥗
CARB LOG
03 — MEAL RECORD
§04 GETTING STARTED
01
OPEN THE FILE

Open the tool directly in your browser. No install, no server, no dependencies — bookmark it for easy access.

Works on any
modern browser
· Chrome · Safari
· Firefox
02
SET YOUR EATING WINDOW

On the Timer tab, find the "Eating Window" section. Set your preferred start and end times — for example 10:00 AM to 6:00 PM. The tool will calculate your fasting and eating windows automatically.

Settings saved
to localStorage
automatically
03
USE IT DAILY

After setup, just open the bookmark each day. The timer runs against the current time — no manual start/stop needed. Log water and meals as you go.

Language toggle
available: EN
§05 YOUR DATA

Your client data is stored in your browser's localStorage. To switch devices or back up, use the built-in export function.

  • → Regularly hit Export (JSON) to save a backup to your local device. (I save mine to my iCloud.)
  • → On a new device (such as an iPad), open the tool and select Import to restore your data.
  • → Completely private. No data is shared with third parties.
EXPORT FORMAT PREVIEW
{
  "eatStart": "10:00",
  "eatEnd": "18:00",
  "dayCount": 42,
  "waterLog": [ ... ],
  "mealLog": [ ... ],
  "exportedAt": "2025-04-16"
}

SOURCE CODE & SUPPORT

If this tool saved you time or added value to your workflow, consider buying me a coffee. It fuels the next update.

SOURCE CODE ↗ BUY ME A COFFEE ☕

DISCLAIMER:

This tool is a completely free, open-source resource provided for personal use and informational purposes only. It does not constitute medical, health, or professional advice. Use at your own risk.

PROJECT AXIS — AX-2024.003 — TOOL LAYER
← BACK TO LAB