DeepFast vs Fastly Fasting Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DeepFast
This app provides a dedicated timer for extended fasting periods, focusing on tracking metabolic body phases and personal fasting streaks. It offers detailed insights into your fasting journey without calorie counting or social features.
- Animated fasting timer with progress ring
- Presets for OMAD, Warrior, and extended fasts
- Metabolic body phase tracking
- Streak calendar and history
- Weight tracking with Apple Health sync
- Smart notifications for phases and milestones
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DeepFast is the fasting timer built for serious fasters. No calorie counting. No meal plans. No social feeds. Just your fast, your streaks, and your results. FASTING TIMER • Beautiful animated timer ring with real-time progress • Presets for OMAD (23:1), Warrior (20:4), 36h, 48h, 72h, and custom fasts up to 7 days • Timer persists through app close and device restart • Backdate your start time if you forgot to tap start BODY PHASE TRACKING • See exactly where you are metabolically: Fed State → Early Fasting → Fat Burning → Ketosis → Deep Ketosis → Autophagy → Deep Autophagy → Extended • Science-backed descriptions at every phase • Color-coded progress bar and ring STREAK CALENDAR • Monthly calendar view with daily completion status • Current streak, longest streak, total fasts, and total hours • Tap any day to see detailed fast history • Monthly summary with average duration and longest fast WEIGHT TRACKING • Log weight manually or sync from Apple Health • Trend chart with 7-day moving average • Track total change and weekly progress • Supports kg and lbs SMART NOTIFICATIONS • Get notified when you enter each body phase • Milestone alerts at 50% of your goal • Completion celebrations • Optional daily streak reminders PRIVACY FIRST • All data stored locally on your device • No cloud servers, no analytics, no tracking • HealthKit data never leaves your device • No account required to use the app BUILT FOR OMAD & EXTENDED FASTING Most fasting apps are designed for 16:8 beginners. DeepFast is built for the serious faster — OMAD practitioners, Warrior Diet followers, and anyone doing 36-hour to 7-day extended fasts. We track the phases that matter to you: ketosis, deep ketosis, autophagy, and beyond. SUBSCRIPTION DeepFast offers Monthly ($7.99/month) and Annual ($49.99/year) subscriptions. Payment is charged to your Apple ID. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the billing period. Manage subscriptions in Settings > Apple ID > Subscriptions. Privacy Policy: https://deepfast.co/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Fastly Fasting Tracker
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Lose weight and take control of your eating with Fastly — the complete intermittent fasting tracker with no subscription. Start a fast in one tap and watch a beautiful timer reveal exactly what your body is doing right now: fat-burning, ketosis, and autophagy. Follow any schedule, track your weight and progress, build streaks, and stay motivated — with no $70/year subscription. Most fasting apps lock the features that keep you consistent behind an expensive paywall. Fastly gives you everything, with no paywall. LIVE FASTING STAGES See your body move through each stage as your fast progresses — fed, fat-burning, ketosis, autophagy, and growth hormone. Know exactly when you'll reach the next stage and what it does for your body. It's the motivation that gets you through the hard hours. A TIMER YOU CAN TRUST One-tap start and stop. A glowing ring fills as you fast and shifts color with each stage. Your elapsed time stays exact after backgrounding, a reboot, or a phone restart — because a wrong timer is the fastest way to quit. EVERY SCHEDULE INCLUDED 16:8, 18:6, 20:4, OMAD (23:1), 14:10, 12:12, 5:2, Warrior, Circadian, and fully custom. Beginner to advanced — switch anytime and set a recurring weekly plan. SEE YOUR RESULTS Log your weight and watch the trend move toward your goal. Track BMI, body measurements, fasting hours, average fast length, and completion rate with beautiful charts. STAY MOTIVATED Build streaks, take on challenges, earn milestones, and beat your longest fast. Visible progress is what keeps you going. WATER AND REMINDERS Track hydration and get calm, motivating reminders — fast start and end, eating-window open and close, "you'll reach ketosis in 1 hour," and log-your-weight nudges. LEARN AS YOU FAST Built-in guidance on fasting benefits, what breaks a fast, the science of the stages, and beginner tips — no paywall. NO SUBSCRIPTION, NO PAYWALL All fasting protocols, live stages, weight and progress tracking, streaks, challenges, water, reminders, and content are all included. No subscription, no "shell" tier. There's an optional one-time remove-ads upgrade if you'd like a clean screen. Whether you're starting your first 16:8 or chasing autophagy on OMAD, Fastly gives you the complete toolkit to lose weight, burn fat, and feel great through intermittent fasting. Download Fastly and start your first fast today — no subscription needed. Fastly is not a medical device and does not provide medical advice. Talk to your doctor before starting any fasting or weight-loss program.
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Verdict
The clearest difference is in-app purchases: Fastly Fasting Tracker at none against DeepFast's 2. Fastly Fasting Tracker also leads on iOS requirement (13.0 vs 16.0). On price, ads 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. DeepFast sells 2 in-app purchases, starting at $4.99 per month. Fastly Fasting Tracker asks for nothing beyond the download.
| Parameter | DeepFast | Fastly Fasting Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Panas | Gunawan Santoso |
In-app purchases
DeepFast
- Premium Monthly$4.991 Month
- Premium Annual$29.991 Year
Fastly Fasting Tracker
No in-app purchases









