A simple fasting timer that shows you exactly where you are in your fast. Watch the stages unfold. Fed, ketosis, fat burning, autophagy. All in one place.
See how it worksUse for any fasting style
A clean interface that shows your progress. No complex settings. No paywalls for basic features. Just a timer that keeps you informed.
Visual progress that updates in real time. See exactly how far through your fast you are at any moment.
Understand your metabolic journey. Fed, ketosis, fat burning, autophagy. Know when you hit each one.
Track your consistency. Build your streak. See 7 days of history in the free version. Pro unlocks unlimited.
No internet? No problem. Install as an app. Works completely offline. Syncs when you reconnect.
Pick your fasting duration. 16 hours, 20 hours, 24 hours, whatever works for you. Change it anytime.
One tap. The timer begins. Watch the progress ring fill as your fast progresses through the stages.
View your streaks, history, and insights. See trends emerge. Stay consistent. That's it.
FastNook users appreciate clarity, simplicity, and staying on track with their fasting goals.
"I love seeing exactly when I hit each stage. The visual progress ring keeps me motivated through the tougher hours."
"No clutter, no ads, no premium nonsense. It just works. The streaks feature keeps me accountable."
"Understanding my metabolic stages has been a game changer. This app makes it so clear and easy to follow."
Free includes everything you need to track and understand your fasting. Pro (coming soon) adds advanced insights and custom schedules.
Yes. The full core experience is free forever. Free includes the live timer, all fasting stages, streaks, and 7 days of history. Pro (coming soon) unlocks unlimited history and advanced insights.
The stages are based on well-established metabolic science. Fed state lasts 2-4 hours after eating. Ketosis kicks in around hour 4. Fat burning and autophagy phases follow typical fasting timelines. Your actual biology may vary based on diet, activity, and metabolism.
Completely. FastNook is a progressive web app. Install it like a regular app on iOS or Android. It works 100 percent offline. All your data is stored locally on your device.
Your fast keeps running in the background. Open the app anytime and it will show your correct elapsed time. Your streak and history are saved on your device.
Currently data is stored per device. Cloud sync is planned for a future update to let you see your history across all your devices.
Pro is coming soon with unlimited history, advanced insights, and custom fasting schedules. Pricing will be affordable and annual subscription will be the best value.
FastNook is free and takes 10 seconds to start. No signup. No email. Just open and fast.
Open FastNook nowFree forever. Works offline. Privacy first.