Comparison

Fastly vs FastFast

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

Head to head
About

Fastly

This app helps you track intermittent fasting with a clean interface, customizable plans, and motivational features. Monitor your body's response through different fasting zones and visualize progress with charts and widgets. Your data remains private, stored locally or optionally via iCloud.

Highlights
  • Customizable fasting plans (16:8, OMAD, etc.)
  • Real-time circular timer and zone tracking
  • Motivational streaks, badges, and calendar heatmap
  • Weight tracking with trend visualization
  • Home screen widgets and Live Activities
  • Optional iCloud sync and CSV export
Features
Read full description

Intermittent fasting, without the clutter. Fastly is a clean, private fasting timer built for people who want to stick to 16:8, OMAD, or any plan they choose — with beautiful widgets, real-time zone tracking, and zero ads or accounts. Start a fast in one tap. Watch your body move through five fasting zones — from catabolism to deep autophagy. Build streaks, earn badges, and see your progress in charts that actually make sense. FASTING, YOUR WAY • Pick from 16:8, 18:6, 20:4, OMAD, 5:2, or build a custom plan • Live circular timer with elapsed, remaining, and target • Edit past fasts or log a forgotten one manually • End a fast by voice with the Siri shortcut SEE YOUR BODY'S RESPONSE • Five fasting zones: Anabolic, Catabolic, Fat Burning, Ketosis, Autophagy • Clear guide explains what's happening at each stage • Gentle notifications when you enter a new zone STAY MOTIVATED • Streaks and weekly summaries • 20 unlockable badges for consistency and milestones • Calendar heatmap shows every fast at a glance • Full history with notes on each session TRACK YOUR WEIGHT • Log in kg or lbs in one tap • Visualize trends over weeks, months, or years • Combined timeline of fasts and weight changes WIDGETS + LIVE ACTIVITIES • Home Screen widgets in Small, Medium, and Lock Screen sizes • Live Activity keeps your fast visible on the Lock Screen and Dynamic Island • Real-time countdown and zone status — no need to open the app YOUR DATA STAYS YOURS • Optional iCloud sync across iPhone and iPad • No account, no ads, no tracking • CSV export anytime (Pro) FASTLY PRO Unlock the full experience: • Unlimited history (free tier shows last 30 days) • Widgets • Trend, Eating Window, Fasting Pattern, and Weight charts • 30-day and yearly insights • CSV export of all your data PRIVACY FIRST Your data lives on your device (and optionally your private iCloud). We don't collect, sell, or share anything. Ever.

About

FastFast

Features
Read full description

FastFast - Fasting, Food & Steps Track calories, fast smarter, and hit your step goals - without ever opening the app. FastFast turns your three healthiest habits into one beautifully simple experience. No bloat. Just the tools you'll actually use, right where you'll see them: your Home Screen. YOUR HOME SCREEN, YOUR COACH Widgets are the whole idea. Pin your fasting timer, calorie ring, or daily step progress wherever you'll glance One tap to log a meal. One tap to scan a plate. One tap to check the timer. The fewer times you open the app, the better it's working. EVERYTHING YOU NEED. FREE. Calorie Tracking - log meals in seconds with a clean, fast form AI Food Scanner - snap a photo and let Apple Intelligence estimate the calories for you* 16:8 Fasting Timer - a beautiful ring that shows exactly where you are in your eating window Step Tracking - syncs with Apple Health and celebrates every milestone Gentle Reminders - get notified when your eating window opens and closes Calendar History - scroll back through any day, see your streaks build BUILT FOR iOS, BUILT FOR YOU Private by design - your data stays on your device Apple Health integration - your steps, automatically THE CATCH? THERE ISN'T ONE. The core experience - fasting, calorie logging, step tracking, widgets, reminders - is completely free. We mean it. Download FastFast. Build the habits. Watch them stick. *AI food scanning requires a device that supports Apple Intelligence on iOS 26 or later.

Screenshots

Fastly4 screens
FastFast4 screens

Verdict

The call

The clearest difference is iOS requirement: Fastly at 17.0 against FastFast's 26.0. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 8 level
Fastly versus FastFast: the parameters behind the verdict, then further details
ParameterFastlyFastFast
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 9 days—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better26.0
Further details — not scored
Size5 MB13 MB
Age rating4+4+
DeveloperTejas PatelParsa Nasirimehr

In-app purchases

None

Fastly

No in-app purchases

None

FastFast

No in-app purchases

Questions

Is Fastly free?
Fastly is free to download, with no in-app purchases.
Is FastFast free?
FastFast is free to download, with no in-app purchases.
Do Fastly or FastFast have ads?
Neither Fastly nor FastFast shows ads.

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