AllyFast: Fasting Tracker

A fresh new look for your fast. Dark Mode plus full Liquid Glass UI support across the app.

AllyFast is a beautifully crafted intermittent fasting timer built with SwiftUI. Clean, lightweight, and privacy-first. Whether you follow 16:8, 18:6, 20:4, OMAD, or extended fasts, AllyFast keeps your fasting journey simple and focused.

Why AllyFast?

• No subscriptions. One-time $0.99. Yours forever.
• 100% private. All data stays on your device. • No ads, no trackers, no accounts, no clutter.
• Ultra lightweight at just 1.7 MB.

Key Features

• Beautiful fasting timer with smooth SwiftUI animations • Supports intermittent fasting plans: 12:12, 14:10, 16:8, 18:6, 20:4, OMAD • Extended fasts up to 72 hours • Editable fasting history with color-coded goal tracking • Science-based fasting stage insights (fed state, ketosis, autophagy, and more) • Unlimited local import and export of your fasting data • Polished for iOS 26 Liquid Glass • Full Dark Mode support

Perfect Privacy

Your fasting data never leaves your iPhone. No cloud sync, no servers, no tracking. Just you and your fast.

Built for Everyone

From beginners exploring their first 16:8 fast to experienced fasters tracking multi-day autophagy windows, AllyFast adapts to your goals without getting in the way.

No cloud. No noise. Just fasting.