FastSloth: Fasting Tracker
Tracker, Hydration & Ketosis
About
This app helps you track intermittent fasting with customizable schedules and real-time indicators of your body's stages. It also includes hydration logging, weight tracking with visual progress charts, and smart notifications to keep you on track. All your data stays private on your device.
What's New in FastSloth
3.0.0
October 26, 2026
- Track your fast from the Lock Screen and Dynamic Island with a new Live Activity. - See your fasting timer, progress, and goal time in the medium Home Screen widget. Start or end a fast from a widget, and log water from the water widget. - Use Siri or Shortcuts to start or end a fast, check progress, log water, and open articles. - Try the free Halloween theme in light or dark mode.
MoreSubscriptions & In-App Purchases
$12.99
Premium Lifetime
Unlock all protocols, insights, and ad-free experience.
Developer apps
FAQ
What fasting protocols does FastSloth support?
FastSloth supports popular protocols like 16:8, 14:10, 18:6, 20:4, and OMAD (23:1). You can also create a custom schedule that fits your personal needs.
Does FastSloth require an account or subscription?
No, FastSloth does not require an account or a subscription. All your data is stored locally on your device, ensuring your privacy.
Can I track my hydration with FastSloth?
Yes, FastSloth includes a hydration logging feature with gentle reminders throughout the day. You can view your daily progress at a glance, even from your Home Screen widget.
How does FastSloth help with weight tracking?
You can log your weight over time in FastSloth and view visual progress charts. This helps you monitor trends, stay motivated, and make informed adjustments to your fasting schedule.
Does FastSloth have ads?
Yes, FastSloth contains advertisements to support its development and features.
What are the real-time indicators in FastSloth?
FastSloth provides real-time indicators showing when your body enters key stages of fasting, such as fat burning, ketosis, and deep autophagy.
Is FastSloth available on all devices?
FastSloth is currently supported on iPhone and iPad devices.
How often is FastSloth updated?
The latest version of FastSloth is 1.3.3, and it was last updated on June 2, 2026. Updates typically include new features, bug fixes, and performance improvements.
