Eating-window timer for 16:8, 18:6, OMAD & custom schedules, with streaks.
Fastr Clock is a zero-friction timer for people who eat on a schedule. One tap to start, one tap to end, and a clear countdown to your next eating window in between.
MORE THAN A COUNTDOWN
A long timer is easier when it has milestones. Fastr Clock splits every session into five phases, each with its own animated card:
• 0–4 h · First hours
• 4–8 h · Settling in
• 8–12 h · Past halfway
• 12–16 h · Home stretch
• 16 h+ · Long timer
Each phase comes with a short, practical tip, and you can get a notification when you cross into the next one.
A TIMER BUILT FOR EATING WINDOWS
• Presets: 14:10, 16:8 (most popular), 18:6, 20:4 and one meal a day
• Custom mode – choose any window from 10 to 23 hours
• Forgot to tap Start? Backdate the start time. Got it wrong? Edit it.
• Switch schedules with one tap, even mid-countdown – your goal moves, your progress stays
• A pinned notification with a live clock, so you never open the app just to check
QUICK DAILY LOG
• Water with quick +150 / +250 / +500 ml buttons and a daily goal
• Weight, with history
• Energy, hunger and mood notes
HISTORY
• Streak calendar – green for goal reached, grey for a shorter session
• Weekly average timer hours alongside your weight log
• Energy, hunger and mood charts
• Full history of every session
NOTIFICATIONS THAT EARN THEIR PLACE
• New timer phase
• Timer complete
• Water reminder every two hours while the timer runs
• One hour before your eating window closes
Every alert can be switched off individually, and a test button confirms they reach your phone.
READ UP
Short articles on drinks and your eating window, getting through a long timer, planning your first meal, choosing a schedule, and keeping a streak going.
PRIVATE BY DESIGN
Everything is stored on your device. No account, no sign-up, no cloud. Works fully offline.
FASTR PRO – ONE PAYMENT, YOURS FOREVER
A one-time purchase that supports an independent app. No subscription, ever.
Fastr Clock is a timer and a log book, not medical advice. If you are pregnant or breastfeeding, under 18, take medication for diabetes, have a history of disordered eating, or have any medical condition, talk to a doctor before changing when you eat.
الجديد
🎨 Pro: 10 new colour themes
🩸 Pro: blood sugar calendar in Stats
📱 New home screen widget with a live timer
⭐ Points next to the title, Undo for deleted fasts
🐞 Fixed duplicate timers on a double tap