Now on the App Store
Download FastSyncer — Free Fasting Tracker For Women
Our intermittent fasting app for women is live, and it is free to download and free to use. It tracks every fast for you, and a new fasting challenge starts on the first of every month.
One card a day. Everything decided for you.
Most fasting apps give every woman the same timer, every day of the month. FastSyncer doesn't. It knows where you are in your cycle and adjusts your fasting hours and food guidance daily — longer fasts when your body handles them well, gentler days when it needs fuel.
Learn more on the app's own site at fastsyncer.com.
What's in the App
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Cycle-Synced Fasting Hours
Every morning the app sets your best fasting window for today, matched to where you are in your cycle.
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What to Eat Today
A daily card tells you exactly which foods help you today — and which to avoid — based on your cycle phase.
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Auto-Start Tracking
The tracker starts itself at your usual time. Open the app and your fast is already running.
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Progress You Can See
Fasts, streaks, and how your body responds across the month — all in one view.
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Built on Real Protocols
The same hormone-aware fasting approach taught across this site, turned into a daily companion.
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Your First Week Is Free
Try every daily card, the tracker and the food plan for seven days before you pay anything.
Join this month’s challenge
A new fasting challenge starts on the first of every month. Download the app, pick your days and start — it costs nothing to join.
The iPhone app is available worldwide today. Android is not available yet.