Great app
La uso para bajar de peso, muy buena app, justo lo que necesitaba
Free
In-App Purchases
About
This app provides a synchronized intermittent fasting timer designed for seamless use across your iPhone and Apple Watch. It offers detailed insights into fasting zones and hydration tracking, with a focus on privacy and a user-friendly experience.
✓Synchronized iPhone and Apple Watch timer
✓Fasting zone insights
✓Hydration tracking
✓Multiple fasting plans
✓Streak calendar
✓Data export
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What's New in WaterFast
1.0.6
August 16, 2026
• Try everything free for 3 days — pick monthly or yearly, cancel anytime. All plans, streak calendar, full stats and Watch complications. • A full automatic cycle: reach your goal and your fast is saved, then your eating window begins — and when it ends, you're ready for the next one. • Smoother, more reliable timer, with clear "End fast" and "Finish" actions in each phase. • A cleaner, more minimalist design — polished for both light and dark mode. • New gentle reminder to get back to fasting after a few days off. • Fixes and performance improvements.
MoreSubscription plans
WaterFast PRO Yearly
Full PRO access.
$9.991 Year
1
In-App Purchases
$24.99
WaterFast PRO Lifetime
Full PRO access forever. One payment.
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FAQ
Does WaterFast have ads?
No, WaterFast is ad-free. The app emphasizes privacy and does not include advertisements.
What are the pricing options for WaterFast PRO?
WaterFast PRO is available for $9.99 per year with a 7-day free trial, or as a lifetime purchase for $24.99. There are no monthly fees.
How does WaterFast sync with Apple Watch?
WaterFast is built with Apple Watch as the primary device. The timer state is shared, ensuring your iPhone and Watch timers remain synchronized to the second, even when your phone is not actively being used.
What fasting plans does WaterFast offer?
The free version includes the 16:8 fasting plan. WaterFast PRO unlocks additional plans such as 18:6, 20:4, OMAD, 5:2, and fully custom plans.
Can I track my hydration with WaterFast?
Yes, WaterFast includes hydration tracking. You can log water intake with a single tap on your Apple Watch, and this data syncs instantly to your iPhone and Apple Health.
What are fasting zones in WaterFast?
Fasting zones provide insights into what is happening in your body during a fast, including digestion, fat burning, ketosis, and autophagy. Each zone is explained with science-based hour ranges for educational purposes.
Is my data private with WaterFast?
Yes, WaterFast is designed for privacy. It requires no account, no ads, and no tracking. Your fasting and hydration data remains on your device unless you choose to sync it with Apple Health.
How often is WaterFast updated?
The app was last updated on July 15, 2026, with version 1.0.1. This indicates active development and maintenance.