FastTrak
Intermittent Fasting Tracker for iOS
More than a countdown timer
FastTrak is the fasting companion for people who want more than a countdown timer. Start a fast in one tap and follow your progress with live, personalized fasting insights, weight tracking, widgets, and powerful analytics. Built for iPhone with deep Apple Health integration and designed with privacy in mind. Supports 16:8, 18:6, 20:4, OMAD, and custom fasting windows.
Features
Fasting Timer
Start a fast in one tap with a beautiful progress ring. Supports 16:8, 18:6, 20:4, OMAD, and custom fasting windows. Edit your start time or goal duration at any time. A weekly ring view shows your last 7 days at a glance.
Live Fasting Insights
See estimated fat use, estimated calories used, estimated glycogen remaining, money saved based on your grocery cost, steps taken while fasting, and your weight trend over the past week. Every estimate is clearly labeled and includes an explanation of how it is calculated.
Weight Tracking
Log weight manually or import from Apple Health. Set a goal weight and see it on your chart. View progress by week, month, or year. Schedule weigh-in reminders on the days you choose.
Apple Health Integration
Reads steps, active energy, body mass, height, date of birth, and biological sex from Apple Health. Uses Mifflin-St Jeor BMR for personalized energy estimates. Syncs weight entries with Apple Health and keeps your health data on your device.
Widgets for Home & Lock Screen
Progress ring widget for small, medium, circular, rectangular, and inline sizes with live updates while you are fasting. Plus subscribers get an activity heatmap widget showing weeks of fasting history.
Analytics with FastTrak Plus
52-week fasting activity heatmap, weight vs. fasting correlation chart, weekly fasting hours over 12 weeks, average fasting duration trend, cumulative estimated fat use and money saved, fasting pattern distribution by start and end time, and full fast history.
Works with every fasting schedule
16:8 Fasting
The most popular intermittent fasting schedule
18:6 Fasting
A slightly longer window for deeper benefits
20:4 Fasting
An extended fast with a short eating window
OMAD
One meal a day for maximum fasting time
Custom Windows
Set any fasting and eating window you prefer
Weight Loss
Track weight alongside fasting for clear trends
Free & Plus
Free
- Fasting timer with progress ring
- Live fasting insights
- Weight tracking
- Apple Health integration
- Home & lock screen widgets
Plus
- 52-week activity heatmap
- Weight vs. fasting correlation
- Cumulative stats & trends
- Heatmap widget
- Full fast history
FastTrak provides wellness estimates only and is not medical advice.
Frequently asked questions
- What is FastTrak?
- FastTrak is a native iOS intermittent fasting app with live fasting insights, weight tracking, Apple Health integration, widgets, and powerful analytics. It supports 16:8, 18:6, 20:4, OMAD, and custom fasting windows.
- Is FastTrak free?
- Yes. The fasting timer, live insights, weight tracking, Apple Health integration, and widgets are all free. Upgrade to Plus for advanced analytics including the 52-week heatmap, correlation charts, cumulative stats, and full fast history.
- What fasting schedules are supported?
- FastTrak supports 16:8, 18:6, 20:4, OMAD, and fully custom fasting windows. You can edit your start time or goal duration at any time during a fast.
- How does Apple Health integration work?
- FastTrak reads steps, active energy, body mass, height, date of birth, and biological sex from Apple Health. It uses the Mifflin-St Jeor BMR formula for personalized energy estimates and syncs weight entries back to Apple Health.
- What live insights are shown during a fast?
- Estimated fat use, calories used, glycogen remaining, money saved, steps taken while fasting, and your weight trend. Every estimate is clearly labeled with an explanation of how it is calculated.
- Does FastTrak collect my data?
- No. FastTrak keeps your fasting history and health data on your iPhone. There are no accounts, no social features, no ads, and no server required.