About this app
FastIQ is the intermittent fasting tracker that finally connects your fasting window, your meals, and the science behind both — so you actually understand what your body is doing. FASTING, MADE CLEAR • Start, stop, and edit fasts with a clean timer and flexible eating windows • Watch a live, hour-by-hour view of your metabolic state — from fed state and glycogen depletion to fat burning, ketosis, and autophagy • Choose a schedule that fits your life: 16:8, custom windows, or open-ended fasts • Smart notifications for when your fast starts, ends, and hits key milestones CALORIE & MACRO TRACKING — POWERED BY AI • Snap a photo of your meal and get an instant calorie and macro estimate • Scan a nutrition label or barcode to log packaged food in seconds • See protein, carbs, and fat at a glance with a clean daily macro ring • Search foods or add them manually — AI is optional, you're always in control LEARN AS YOU GO • 30+ bite-sized lessons on fasting, metabolism, macros, and habits • Evidence-informed, plain-English explanations — no hype, no fads • Topics like protein priority, breaking a fast, autophagy, plateaus, electrolytes, and metabolic flexibility PROGRESS YOU CAN SEE • Track weight toward your goal with clear progress visuals • Review your fasting and meal history day by day • Advanced analytics to spot the patterns that work for you FAST TOGETHER • Join a hosted group fast from a shared link and start at the same time, in your own timezone • See who else is fasting right now and cheer them on • A monthly and yearly leaderboard for fasts that hit their own goal • Pick a display name and avatar — your email is never shown PRIVATE & YOURS • Fasting and meal tracking work offline; your log lives on your device • Community features (display name, avatar, cheers, leaderboards, group fasts) sync to our servers so other people can see them — you choose whether to take part, and you can remove your community profile at any time • Optional email sign-in to sync securely across devices • No ads, ever FastIQ Pro unlocks AI photo and label scanning, AI fasting insights, full calorie and macro tracking, and advanced analytics. Start with a free trial, then continue monthly or annually. COMMUNITY STANDARDS FastIQ has zero tolerance for objectionable content or abusive behaviour. Display names are filtered automatically, group fasts can only be hosted by people we have approved, and every profile, host and coach update can be reported or blocked from inside the app. Reports are reviewed within 24 hours and offending content and accounts are removed. Our Community Guidelines are in the app under Settings → Community, and at https://fastiq.fit/community-guidelines. FastIQ is an education and tracking tool, not medical advice. Talk to a qualified healthcare professional before starting any fasting or nutrition program, especially if you are pregnant, nursing, under 18, or managing a medical condition. Fasts longer than 48 hours carry real health risks and are not safe for everyone. Privacy Policy: https://fastiq.fit/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Latest release
What’s New
More flexible group fasting • Schedule hosted fasts further ahead and share your invite link early • Choose custom fasting goals in hours or days • Follow your own fasting goal within a hosted room • Get oriented with the new Home tour • Improved custom goal entry so the keyboard no longer covers the number field Includes additional usability improvements and bug fixes.
Audience growth
Ratings growth
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
- First observed Aug 25, 2026 · 5:54 PM Free