Comparison

Fasting Clock vs Intermittent Fasting Flow

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

Head to head
About

Fasting Clock

Features
Read full description

Simple Fasting Clock is a clean, easy intermittent fasting timer that helps you stay consistent—without complicated setup. Start your fast, watch the progress ring, and see exactly how much time is left. During your fast, you’ll also get simple fasting phase insights (Fed → Fat Burning → Deep Ketosis) to stay motivated. FEATURES • One-tap fasting timer with auto-complete • Presets: 16:8, 18:6, 20:4 (Warrior), 23:1 (OMAD) • Custom fasting duration from 1 to 72 hours • Live progress ring with time left and percentage • Fasting phase guide with clear explanations • History log for every fast (completed or ended early) • Stats: completed fasts, total hours fasted, average duration, and day streak • Achievements to celebrate milestones • Daily quote + daily tip for motivation • Designed for iPhone and iPad • No account required DISCLAIMER This app is for informational purposes only and is not medical advice. If you have a medical condition, are pregnant, or are under 18, consult a healthcare professional before fasting. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Intermittent Fasting Flow

Track your fasting periods with a clean, ad-free timer. Choose from various fasting plans and monitor your progress with live widgets. Sync data with Apple Health and use Siri shortcuts for hands-free control.

Highlights
  • Ad-free fasting timer
  • Lock screen and home screen widgets
  • Multiple fasting plan durations
  • Customizable start times
  • Streak tracking and milestone badges
  • Apple Health integration
  • Siri shortcuts
Features
Read full description

Ad-Free. Always. Intermittent Fasting Flow is a clean, distraction-free fasting tracker built for people serious about their health. Choose your fasting plan, track your hydration, and learn the science behind every fast — all in one beautiful app. FASTING TIMER Choose from 12, 14, 16, 18, or 20-hour plans. Live progress ring, streak tracking, and milestone badges keep you motivated every step of the way. HYDRATION TRACKING Stay hydrated during your fast. Set a daily water goal and log intake with one tap — small cup, glass, bottle, or custom amount. LEARN Curated articles from trusted sources on intermittent fasting science, tips, and protocols. Know what's happening in your body while you fast. WIDGETS & LIVE PROGRESS Lock screen and home screen widgets keep your fasting and hydration status visible all day — without opening the app. APPLE HEALTH & SIRI Sync fasting sessions to Apple Health as mindful minutes. Use Siri shortcuts to start or end a fast hands-free. COMPLETELY AD-FREE No ads. No popups. No distractions. The 16:8 plan is free, forever. Unlock all plans and Pro features with a subscription.

Screenshots

Fasting Clock4 screens
Intermittent Fasting Flow4 screens

Verdict

The call

The clearest difference is ads: Intermittent Fasting Flow at none against Fasting Clock's shown. Intermittent Fasting Flow also leads on update cadence (every 4 days vs every 5 months). Fasting Clock's advantage is iOS requirement (13.0 vs 17.6). On price, 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. Fasting Clock sells 3 in-app purchases, starting at $0.99 per 7 days and Intermittent Fasting Flow sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Fasting Clock ships an update every 5 months, Intermittent Fasting Flow every 4 days. The most recent releases landed on September 14, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
Fasting Clock versus Intermittent Fasting Flow: the parameters behind the verdict, then further details
ParameterFasting ClockIntermittent Fasting Flow
PriceFreeFree
Rating—5.0 (7 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—7 — better
Update frequencyEvery 5 monthsEvery 4 days — better
AdsYesNo — better
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size23 MB6 MB
Age rating4+4+
DeveloperAfriwan AhdaIVAYLO PLAMENOV VACHKOV

In-app purchases

3 purchases

Fasting Clock

Subscriptions3
  • Weekly Premium Access$0.997 Days
  • Monthly Premium Access$2.991 Month
  • Yearly Premium Access$17.991 Year
2 purchases

Intermittent Fasting Flow

Subscriptions2
  • Monthly7 Days trial$1.991 Month
  • Yearly7 Days trial$19.991 Year

Questions

Is Fasting Clock free?
Fasting Clock is free to download, with in-app purchases available.
Is Intermittent Fasting Flow free?
Intermittent Fasting Flow is free to download, with in-app purchases available.
Do Fasting Clock or Intermittent Fasting Flow have ads?
Fasting Clock shows ads; Intermittent Fasting Flow does not.
Which is updated more often, Fasting Clock or Intermittent Fasting Flow?
Fasting Clock ships an update every 5 months, and Intermittent Fasting Flow every 4 days. Most recently, Fasting Clock was updated on September 14, 2026 and Intermittent Fasting Flow on September 22, 2026.

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