Keto18
Fasting and carbs,
in one app
Set your fasting goal (16, 18, 24 hours or your own) and daily carb goal (20, 30, 50g or your own), then log and stick to them with ease.
Coming soon to Google PlayFeatures
My pledge
Write down why you started. It stays at the top of the fasting screen and on the widget, and shows up again if you try to end a fast early.
Fasting timer
Pick 16, 18 or 24 hours or any goal you like, edit start and end times anytime, and get an alert when you reach your goal.
Carb goal
Set a daily net-carb goal of 20, 30 or 50g or your own and see what’s left on a gauge. Add an optional calorie goal too. 170 built-in foods, including Korean dishes.
Meal planning
Plan what to eat and when, get a reminder at meal time, and check items off to log them.
Perfect-day calendar
Days where you hit your fasting goal and stayed under your carb limit are marked, with streaks.
Photo log
Save meal and progress photos and compare your first and latest side by side.
Weight & ketones
Track weight (kg or lb), BMI and blood ketone readings on a trend chart.
Home-screen widgets
Fasting timer, carbs, water (+250ml in one tap), my pledge and a today summary. Check and log without opening the app.
🔒 Your records stay on your phone
- No account or sign-in.
- No Internet access, so nothing ever leaves your phone.
- No ads and no analytics.
- See the privacy policy for details.
Help
How do I change my carb or fasting goal?
Tap “Goal under ○g ✎” on the Food tab, or go to Settings → Daily carb goal. For fasting, use the 16 / 18 / 24-hour buttons or “⚙ Custom” on the Fast tab.
My alerts arrive late
Allow “Alarms & reminders” for Keto18 in your phone settings to get alerts right on time. The app’s Settings screen links there directly.
How do I move my records to a new phone?
In Settings, tap “Create backup file”, then “Restore from backup” on the new phone. Photos aren’t included, so save the ones you want with “Save to gallery”.
How do I delete all my data?
Use Settings → “Delete all records”, or uninstall the app / clear its storage in Android Settings.
Are the food carb values exact?
Built-in values are typical averages and vary by product. If there’s a nutrition label, use “Enter manually”.
Contact
Questions, bug reports or feature ideas: email twbtwb0606@gmail.com. You can also use GitHub Issues.
Keto18 is not a medical device and does not replace medical diagnosis or treatment. If you are pregnant, breastfeeding, have diabetes or another condition, or take medication, talk to a doctor before fasting or starting a low-carb diet.