Comparison

9toFast vs Fastly Fasting Tracker

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

9toFast

Features
Read full description

9toFast is a clean and intuitive intermittent fasting app designed to help you stay consistent without pressure. Whether you’re fasting for better focus, energy, or health, 9toFast makes it easy to track your progress and feel in control. Stay on track effortlessly β€’ Smart fasting timer: Start, pause, or end your fasts anytime and watch your fasting ring fill in real-time. β€’ Custom fasting plans: Choose from popular plans like 16:8 or 18:6, or set your own window. β€’ Progress dashboard: Visualise your streaks and completion rates at a glance. β€’ Personalised themes: Match your app to your mood with sleek light and dark options. β€’ Simple insights: See how your fasting habits evolve over time with easy-to-read stats. Why users love 9toFast β€’ Minimal design that keeps fasting simple β€’ No clutter, ads, or confusing features β€’ Built for balance, not restriction Perfect for beginners and pros Whether you’re new to fasting or have been doing it for years, 9toFast adapts to your lifestyle. Track your fasts, stay consistent, and celebrate small wins daily. Coming soon β€’ Weight tracking β€’ Calorie Counting β€’ Meal Logging β€’ Health app integrations β€’ Fasting challenges β€’ Custom reminders and streak rewards Start your fasting journey today with 9toFast: the fasting tracker that’s simple, motivating, and built for real life.

About

Fastly Fasting Tracker

Features
Read full description

Lose weight and take control of your eating with Fastly β€” 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 β€” 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 β€” 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 β€” 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 β€” 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 β€” 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 β€” 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 β€” 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.

Screenshots

9toFast4 screens
Fastly Fasting Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: Fastly Fasting Tracker at none against 9toFast's 3. Fastly Fasting Tracker also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.1). On price and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. 9toFast sells 3 in-app purchases, starting at $0.99 per month. Fastly Fasting Tracker asks for nothing beyond the download.

Scorecard3 real differences Β· 3 level
9toFast versus Fastly Fasting Tracker: the parameters behind the verdict, then further details
Parameter9toFastFastly Fasting Tracker
PriceFreeFree
Update frequencyFortnightlyβ€”
AdsYesNo β€” better
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.113.0 β€” better
Further details β€” not scored
Size47 MB33 MB
Age rating4+4+
DeveloperEsther YekiniGunawan Santoso

In-app purchases

3 purchases

9toFast

Subscriptions2
  • Premium Monthly$0.991 Month
  • Premium Yearly$9.991 Year
One-time1
  • Premium Lifetime$19.99
None

Fastly Fasting Tracker

No in-app purchases

Questions

Is 9toFast free?
9toFast is free to download, with in-app purchases available.
Is Fastly Fasting Tracker free?
Fastly Fasting Tracker is free to download, with no in-app purchases.
Do 9toFast or Fastly Fasting Tracker have ads?
9toFast shows ads; Fastly Fasting Tracker does not.

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