EGK FastSync: Your Ultimate Intermittent Fasting & Wellness Companion
Discover the power of mindful living with EGK FastSync, the revolutionary iOS app designed for those committed to intermittent fasting, balanced eating, and restorative sleep. Built by wellness enthusiasts for wellness enthusiasts, EGK FastSync seamlessly integrates with Apple's HealthKit and Calendar, turning your iPhone into a personal health coach that tracks, analyzes, and motivates you toward better habits.
Effortless Tracking at Your Fingertips
At the heart of EGK FastSync is its intuitive dashboard featuring a stunning, animated donut ring that visualizes your daily progress across three key pillars: fasting, eating windows, and sleep. Start your fast with a single tap—the live timer counts every second, accumulating hours without reset until you choose to end it. Switch seamlessly to eating mode, where the timer pauses fasting automatically, ensuring mutually exclusive tracking for accuracy. Sleep data pulls automatically from your Apple Watch or Health app, calculating hours in core.
No more manual logging or guesswork. The app's persistent state manager saves your progress across sessions, surviving app restarts and device reboots via secure UserDefaults. Watch your stats evolve in real-time: the donut ring pulses with smooth animations as hours accumulate, celebrating milestones with particle effects and haptic feedback.
Seamless Sync & Calendar Integration
EGK FastSync doesn't just track—it syncs. Every fasting period, eating window, and sleep session auto-logs as detailed events to your Calendar, complete with timestamps and notes like "Fasting: 16.2 hours." For sleep, it pull data from HealthKit.
The crown jewel? The "Upload to Calendar" button creates a beautifully formatted daily summary event covering the full 24 hours. Imagine opening your calendar to see:
Daily Summary - Oct 23
FASTING: 16.2 hours
EATING: 5.8 hours
SLEEP: 7.1 hours
TOTAL: 29.1 hours tracked
Fasting Goal: 67%
This all-day event captures your journey, helping you review patterns over weeks or months. Permissions are handled gracefully—request access once, and it remembers. Plus, a success banner confirms every upload with a celebratory green gradient and auto-dismiss after 4 seconds.
Advanced Features for Serious Users

Daily Auto-Reset: Counters reset at midnight, but you control manual sync anytime.
HealthKit Mastery: Reads sleep from the last 7 days, filters asleep/in-bed data, and handles permissions with clear error messages.
Visual Excellence: Custom donut ring with shine overlays, particles on tap, and theme-aware dark/light mode support.
Widget Support: Add a live mini-donut to your home screen for at-a-glance stats—fasting hours, eating, sleep all animated.
Precision Timers: Monospaced digits, bold fonts, and color-coded buttons (green for start, red for stop) make it glanceable.

Privacy & Performance First
EGK FastSync respects your data—local storage only, no cloud servers, no ads. It's lightweight, runs smoothly on iOS 17+, and integrates natively with SwiftUI for buttery animations. Whether you're a 16:8 fasting pro or new to wellness, this app adapts to you.
Why Choose EGK FastSync?
In a world of bloated health apps, EGK FastSync stands out for its simplicity and depth. It's not just tracking—it's transformation. Join thousands transforming their lives, one fast at a time. Download now and start your journey to peak wellness. Your future self will thank you.
Compatible with iPhone, Apple Watch. Requires Health & Calendar permissions.