Nullfast: Intermittent Fasting

Nullfast is a simple intermittent fasting tracker and fasting timer designed for people who prefer clarity over complexity. Whether you're following a 16:8, 18:6, 20:4 or custom fasting schedule, Nullfast helps you stay consistent without distractions. No endless onboarding. No forced gamification. Just you, your goal, and a timer that works.

— FASTING PLANS —
Choose from the most popular protocols or define your own:
- 16:8 — The classic. 16 hours fasting, 8-hour eating window. The go-to starting point for intermittent fasting beginners.
- 18:6 — Narrows the eating window to 6 hours. For those who already have a routine and want a greater challenge.
- 20:4 — A longer fasting protocol with only a 4-hour eating window. For experienced fasters looking to push further.
- Custom — You decide the exact duration. No restrictions, no predefined protocols.

— TIMER —
A clean fasting timer and progress ring that shows exactly how long you've been fasting and how much time remains in your fasting window. The timer keeps running in the background when you close the app and notifies you when you reach your goal. No need to keep the screen on.

— HISTORY —
Review your full fasting history and track every completed fast at a glance: duration, start and end time. Swipe to delete entries. No complicated pagination, no charts you didn't ask for.

— WATER —
Staying hydrated is part of fasting, not an afterthought. Use the built-in water tracker to log your daily intake with a single tap. Switch between millilitres and ounces. The progress ring keeps hydration front of mind throughout your fast.

— WEIGHT —
Monitor your progress with a simple weight tracker and a 30-day weight chart. No automatic projections, no calorie calculations. Just your data, presented honestly.

— FREQUENTLY ASKED QUESTIONS —
Can I switch fasting protocols at any time? Yes, you can switch between 16:8, 18:6, 20:4 or custom whenever you like.
Does the timer keep running if I close the app? Yes, the fasting timer runs in the background and sends a notification when your fast is complete.
Is there a monthly or annual subscription? No. Nullfast is free with ads or a one-time purchase to remove them permanently.
Is my data synced to the cloud? No. Everything is stored exclusively on your device.
Does it work offline? Yes, Nullfast works fully offline.

— NO SUBSCRIPTIONS —
Nullfast is free with ads. If you prefer an uninterrupted experience, there's a one-time purchase to remove them forever. No automatic renewals. No surprises.

— REAL PRIVACY —
All your data stays on your device. Nullfast has no user account, uploads nothing to the cloud, and shares nothing with anyone. Intermittent fasting is personal. Your data should be too.

Available in Spanish, English and Portuguese.