Syncing…
Syncing…
Your fasting hours and your food should change across the month — because your hormones do. FastSyncer gives you one simple card every morning: how long to fast today, and exactly what to eat.
Coming to iOS & Android · From the team behind FastingInPractice.com
Join 2,000+ women already on the list.
Tuesday · Cycle day 21
Pre-period days13h
today’s fast
Eat today
Fasting now
09:41:22
Why FastSyncer
Just fasting longer and longer can raise stress hormones, disturb your sleep, and throw your cycle off. FastSyncer gives you the right hours and the right food for the day you’re actually in — so fasting finally works for your body.
Long fasts on the wrong days raise stress hormones. FastSyncer gives you enough hours to get the benefits, and eases off when your body needs fuel.
Learn moreFasting is only half of it. Each phase, see the foods, vitamins and minerals that support the hormones your body is making right now.
Learn moreRegular cycles, irregular cycles, perimenopause or menopause — a track made for the body you actually have, not an average one.
Learn moreEvery month is a fresh challenge — one-tap daily check-ins, real streaks and medals, and thousands of women doing it with you.
Learn moreAuto-start timer, a gentle ping the moment you reach your goal, and clear charts of your hours, mood and progress over time.
Learn morePersonalised nudges in your own timezone that go quiet overnight and never spam you. Encouragement, never pressure.
Learn moreBuilt for your body
Five ways FastSyncer adapts to your hormones — not the other way around.
Cycle sync
FastSyncer knows where you are in your cycle and tells you exactly how long to fast today — and what to eat — instead of one rigid rule that ignores your hormones.
Eat: leafy greens, healthy fats, quality protein.
Slide 1 of 5: Your cycle sets your fasting hours
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