Women Fasting App: FastSyncer
Free fasting app for women
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Most fasting apps give every woman the same plan every day. Your body doesn't work that way.
FastSyncer syncs intermittent fasting with your hormones. Tell it where you are in your cycle, what you want out of fasting, and how much fasting you've already done — and every single morning it tells you whether to fast, for how long, and what to eat. Because the same fast that burns fat in one week of your cycle can backfire in another.
WORKS WITH ANY CYCLE
• Regular cycles — your plan follows all four phases of the month
• Irregular cycles and PCOS — the plan adapts when your body doesn't run on schedule
• Perimenopause and menopause — a full plan for when your cycle changes or stops
• No tracking app needed alongside it: your cycle and your fasting live in one place
CHOOSE WHAT YOU'RE FASTING FOR
• Hormonal balance — gentler fasts, timed to protect your hormones
• Fat burning — longer fasts, placed only on the days your body can take them
• Change your goal whenever you like and the whole plan rebuilds around it
IT MEETS YOU AT YOUR LEVEL
• Never fasted before? You start short and build up, so you don't quit in week one
• Already fasting? It picks up where you are instead of starting you over
• As you get more experienced the fasts lengthen and the plan gets more ambitious
• A quick daily check-in adjusts everything to how you actually feel that day
YOUR DAILY PLAN
• A fresh recommendation every morning: fast or rest, and for how many hours
• Built around your hormones — some days your body needs fuel, not fasting
• Two food recipes every day, chosen for where you are in your cycle
• The vitamins and minerals your body needs most that day
• What to avoid today, so your food never works against your hormones
28-DAY CHALLENGE
• A guided challenge that builds the fasting habit day by day
• Daily check-ins and gentle reminders
• Streaks, medals and progress rings that reward the work you put in
COMMUNITY
• Share your journey with women on the same path
• Ask questions, post wins, cheer each other on
FASTING TIMER
• One-tap timer that follows your daily plan
• See your fasting history and progress
WHY CYCLE-SYNCED?
Research on women's metabolism shows hormones change how your body responds to fasting across the month. FastSyncer puts that science in your pocket: rest days when your body needs nurturing, longer fasts when your body can handle them.
SAFETY FIRST
FastSyncer is not suitable during pregnancy or breastfeeding, or if you have a history of eating disorders. If you have a medical condition or take medication, talk to your doctor before you start.
SUBSCRIPTION
FastSyncer is free. The 28-day challenge with streaks and medals, the fasting timer with your full history, and the women-only community cost nothing. FastSyncer Pro adds the fasting plan itself: your daily cycle-synced fasting hours, two recipes a day chosen for the phase you are in, the daily vitamin and mineral guidance, and what to avoid today. Monthly: $9.99 per month. Yearly: $59.99 per year. Every subscription starts with a 7-day free trial, and the price above is charged when the trial ends. Prices may vary by region. Payment is charged to your Apple ID account. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store settings.
Privacy: https://fastsyncer.com/privacy
Terms: https://fastsyncer.com/terms
FastSyncer is free to join. Your daily check-in, the monthly challenge, the timer, your analytics and the community all cost nothing — only the cycle-synced fasting plan is paid, and you can try that free for a week.
My Fasting is simpler now: the free plan and the paid one sit side by side, each clearly labelled, so you can see what is free before you decide.
The developer, Mark James, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Mark James
- Size
- 61.6 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Frequent
Medical Treatment information
Contains
User-Generated Content
Health or Wellness Topics
Social Media
- In-App Purchases
Yes
- FastSyncer Pro Yearly $59.99
- FastSyncer Pro Monthly $9.99
- Copyright
- © 2026 FastSyncer