StayFasted - Fasting Tracker

Name: StayFasted - Fasting Tracker
Author: Jason Duval

By: Jason Duval

AI Fasting Coach & Tracker

Features & Capabilities

Now with Live Activities and Apple Watch. Watch your body shift from fed state to autophagy in real time. Science-backed, privacy-first fasting.

StayFasted is the fasting app that actually keeps you going.

Most fasting apps give you a timer and a paywall. StayFasted gives you a coach. An AI that reads your mood, your hunger, your energy — and responds with real guidance based on what's happening in your body right now.

LIVE ACTIVITIES & DYNAMIC ISLAND Your fasting timer lives on your lock screen and Dynamic Island. See elapsed time, current stage, and remaining time — always one glance away. No unlock. No app launch. Just look.

APPLE WATCH APP Start and stop fasts, log water, and check in with your mood — all from your wrist. Full timer with stage tracking, motivational messages, and haptic feedback.

8-STAGE BODY SCIENCE Know exactly what's happening inside your body at every hour. From Fed State to Immune Reset, each stage explains the biology, what you might feel, and what to do about it. This isn't a countdown — it's education.

AI COACHING THAT ACTUALLY HELPS Check in with your mood, hunger, and energy. The AI coach responds with personalized guidance — not generic tips. It knows the difference between hour 4 and hour 40. Built with Apple Intelligence, running 100% on your device.

EVERY FASTING PROTOCOL 16:8 · 18:6 · 20:4 · OMAD · 36h · 48h · 72h · Custom Schedule your next fast. Set weekly rhythms. Track adherence with a 28-day grid.

HYDRATION & ELECTROLYTES Track water, coffee, tea, and electrolytes. Barcode scanner for bottled drinks. Daily goal ring. Sodium, potassium, magnesium tracking — because most fasting discomfort is dehydration, not hunger.

REFEED GUIDE Breaking a fast matters as much as the fast itself. Get recommendations based on your fast duration — what to eat first, what to avoid, and when.

WIDGETS & NOTIFICATIONS Home screen and lock screen widgets for timer, streak, and next fast. Gamified milestone notifications: "You just entered ketosis" instead of generic reminders.

HEALTH & BODY TRACKING Apple Health sync for weight, steps, sleep, heart rate, and active calories. Body measurements. Supplement tracker. InBody, DEXA, and blood panel logging with 40+ biomarkers.

ACHIEVEMENTS & PROGRESS 12 milestone badges. Weekly summaries. Progress charts. Streak tracking. CSV export. Fasting journal with photos.

YOUR DATA STAYS ON YOUR DEVICE No account. No cloud. No tracking. StayFasted runs 100% on-device. Your fasting data, AI conversations, check-in notes, and health metrics exist on your iPhone and nowhere else.

FREE TIER INCLUDES: