Comparison

Intermittent vs Clean Fast

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

Head to head
About

Intermittent

Easily track your intermittent fasting with a visual timeline and preset or custom plans. Integrate with Apple Health for a holistic view of your wellness. Stay updated with widgets and Apple Watch support.

Highlights
  • Fasting timer
  • Visual stage timeline
  • Preset and custom plans
  • Apple Health integration
  • Apple Watch app
  • Widgets and Live Activities
Features
Read full description

100% FREE — NO SUBSCRIPTION, NO PAYWALL, NO IN-APP PURCHASES. BetterFasting is a simple, powerful intermittent fasting timer and tracker for your daily routine. Pick a plan, start your fast, and watch your progress build day after day. Every feature is unlocked from the very first tap. The app is supported by ads, so the tools stay open and free for everyone. POPULAR FASTING PLANS, OR YOUR OWN Fast with 16:8, 18:6, 20:4, OMAD, 5:2, or build a custom fasting window that fits your life. Start, stop, and edit fasts whenever you need to, so the timer always matches your real day. KNOW EXACTLY WHERE YOU ARE Follow live fasting stages as your body moves through your fast, with a clear timer ring and progress at a glance. Set smart reminders so you never miss the start or end of a window. TRACK WHAT MATTERS Log water and mood through the day, record your weight over time, and build streaks and badges that keep you motivated. Review your full fasting history with simple charts that show your trends week over week. ALWAYS WITHIN REACH Add home screen and lock screen widgets, keep your timer front and center with Live Activities and the Dynamic Island, and check your fast right from your wrist with the Apple Watch app. Apple Health sync keeps your data connected, and iCloud sync keeps everything safe across your devices. FAST TOGETHER Add friends, join groups, take on challenges, and cheer each other on in the activity feed. Staying accountable is easier when you are not doing it alone. SPEAKS YOUR LANGUAGE Available in 45 languages, including full right-to-left support. WHY BETTERFASTING? - 100% free: no subscription, no paywall, no in-app purchases. - Every plan and tool unlocked from day one. - Clean, fast, and easy to use every single day. - Ad-supported so the core experience stays open to all. Many fasting apps hide basic tools behind a subscription. BetterFasting is different. Start free, track your routine, stay accountable with friends, and keep the habit going. Fasting is a personal wellness routine, not medical advice. If you have a medical condition, are pregnant, or are unsure whether fasting is right for you, talk to a qualified health professional before you begin. Download BetterFasting and start your first fast today.

About

Clean Fast

Features
Read full description

Tired of bloated fasting apps with endless questionnaires and expensive monthly subscriptions? Meet the clean, private, and distraction-free intermittent fasting timer designed to help you build lasting healthy habits. No account required, no personal data leaves your device. Open the app, tap start, and focus on your fast. KEY FEATURES: • Clean Fasting Timer: See your elapsed time, remaining hours, and estimated completion time at a glance. • Metabolic Milestones: Track body phases as you progress from digestion to fat burning and cellular renewal. • Popular Fasting Protocols: 16:8, 14:10, 18:6, and 20:4 OMAD. • Smart Local Notifications: Get notified the moment your fast is finished. • Streak Tracking & Freezes: Keep your consistency alive without stress using streak freezes. • 100% Offline & Private: No sign-up. All data stays securely on your phone. HEALTH & MEDICAL DISCLAIMER: This app is intended solely for general wellness and educational purposes. It is not a medical device and does not provide medical advice or diagnosis. Always consult with a qualified healthcare professional before beginning any fasting routine.

Screenshots

Intermittent4 screens
Clean Fast4 screens

Verdict

The call

The clearest difference is update cadence: Intermittent at every 4 days against Clean Fast's every 2 weeks. Intermittent also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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. Intermittent sells 4 in-app purchases, starting at $4.99 per month and Clean Fast sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Intermittent ships an update every 4 days, Clean Fast every 2 weeks. The most recent releases landed on November 9, 2026 and November 13, 2026 respectively.

Scorecard2 real differences · 8 level
Intermittent versus Clean Fast: the parameters behind the verdict, then further details
ParameterIntermittentClean Fast
PriceFreeFree
Rating4.9 (21 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings21 — better—
Update frequencyEvery 4 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS17.6 — better18.2
Further details — not scored
Size33 MB23 MB
Age rating12+4+
DeveloperBARBAROS SELIM BUYUKELCIOmar Battan

In-app purchases

4 purchases

Intermittent

Subscriptions4
  • Monthly Premium3 Days trial$4.991 Month
  • 3 Months Premium3 Days trial$9.993 Months
  • 6 Months Premium3 Days trial$24.996 Months
Show 1 more
  • Yearly Premium3 Days trial$34.991 Year
2 purchases

Clean Fast

One-time2
  • Clean Fast Freeze Pack$1.99
  • Clean Fast PRO$4.99

Questions

Is Intermittent free?
Intermittent is free to download, with in-app purchases available.
Is Clean Fast free?
Clean Fast is free to download, with in-app purchases available.
Do Intermittent or Clean Fast have ads?
Neither Intermittent nor Clean Fast shows ads.
Which is updated more often, Intermittent or Clean Fast?
Intermittent ships an update every 4 days, and Clean Fast every 2 weeks. Most recently, Intermittent was updated on November 9, 2026 and Clean Fast on November 13, 2026.

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