InFuel vs Fasting Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
InFuel
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Fuel from within. Transform your body, sharpen your mind, and unlock your full potential—one fast at a time. InFuel is your personal AI-powered fasting coach designed to guide you through 24, 48, 72, and 100-hour fasts with science-backed insights, real-time body updates, and motivational support every step of the way. Whether new to fasting or leveling up your current routine, InFuel keeps you informed, inspired, and in control. - - - - - - - - f e a t u r e s Custom Fast Timer -- Start, pause, or complete your fast anytime. Track your progress hour-by-hour with a clean, minimalist timer designed to keep you focused. Real-Time Body Insights -- Know exactly what’s happening in your body as you fast—ketosis, autophagy, fat-burning, and more. InFuel delivers detailed updates based on your current hour of fasting. AI-Powered Fasting Coach -- Ask questions, get encouragement, or dive into the science behind fasting with your personal AI coach, available 24/7. Smart Reminders -- Get hydration alerts, motivational quotes, and helpful tips—timed around your fasting schedule and sleep preferences. Learn View -- Explore swipeable cards packed with knowledge about fasting safety, the stages of fat-burning, autophagy, and refeeding guidance. Sleep-Aware Notifications -- InFuel adjusts to your sleep schedule so you can rest without unnecessary alerts. Refeed Guidance -- Finish strong. InFuel provides safe, smart recommendations for breaking your fast to avoid bloating and discomfort. Fasting isn’t about going without—it’s about going within. InFuel is built to help you find clarity, discipline, and strength through intentional fasting. Download InFuel today and take the first step toward mastering your fast—one hour at a time.
Fasting Tracker
This app provides structured tracking for intermittent fasting, going beyond simple timers. It helps users follow specific fasting schedules with clear phase progress, build consistency through streaks, and manage a flexible weekly plan. Focuses on discipline and reducing guesswork for a clearer fasting experience.
- Track various fast types (16:8, OMAD, extended)
- Live phase-by-phase progress tracking
- Build streaks from completed fasts
- Flexible weekly fasting schedule
- Review fasting history
- Ask fasting questions with reviewed answers
- Siri and Shortcuts integration
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Fastology is a fasting tracker for people who want more than a timer. Fasting works when it is structured. Fastology helps you track 16:8, 18:6, OMAD, and extended fasts with clear phase progress, streaks that reflect completed fasts, and a weekly schedule that fits real life. Most fasting apps count hours. Fastology helps you follow through. WHY FASTOLOGY Structured, not reactive Follow a clear fasting rhythm instead of making it up as you go. See where you are Track each phase of the fast with live progress, so you always know where you stand and what comes next. Consistency over intensity Build streaks from completed fasts and focus on repeatability, not random extremes. Flexible weekly schedule Set your fasting rhythm for the week, then adjust specific days when life changes. Clear, focused experience No clutter. No noise. Just the tools that matter when you want to fast with more discipline and less guesswork. WHAT YOU CAN DO • Track 16:8, 18:6, OMAD, and extended fasts • Follow live phase-by-phase progress • Build streaks from completed fasts • Set a weekly schedule and adjust specific days • Review your fasting history over time • Ask fasting questions with reviewed answers and linked sources • Start a fast, check your phase, or search Fastology from Siri, Spotlight, Shortcuts, and Ask • On supported devices, use Apple Intelligence to explore your fasting history Fastology is built for people who want to fast with more clarity, more structure, and more follow-through.
Screenshots
Verdict
The clearest difference is update cadence: Fasting Tracker at every 3 weeks against InFuel's every 10 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
InFuel ships an update every 10 months, Fasting Tracker every 3 weeks. Both last shipped on October 25, 2026.
| Parameter | InFuel | Fasting Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (13 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 13 — better |
| Update frequency | Every 10 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Fishybear LLC | SmallScale Works LLC |
In-app purchases
InFuel
No in-app purchases
Fasting Tracker
No in-app purchases









