Comparison

Rhythm Fasting vs ArcFast

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

Head to head
About

Rhythm Fasting

Features
Read full description

Rhythm Fasting is your smart, minimalist intermittent fasting companion. Start a fast with a single tap, follow your daily eating window, and build a healthy rhythm that actually sticks — no clutter, no ads, just the tools you need. Whether you're new to fasting or a seasoned faster, Rhythm Fasting adapts to you. Choose a plan like 16:8, 18:6, 20:4, or OMAD, set your weekly schedule, and let the timer and reminders keep you on track. WHY YOU'LL LOVE IT • One-tap fasting timer with a live countdown • Clean, distraction-free design — completely ad-free • Works in 10 languages • Your data stays yours, synced privately to your Apple account FASTING MADE SIMPLE • Popular plans built in: 16:8, 18:6, 20:4, OMAD, and more • Set a custom eating window for each day of the week • See your current phase, countdown, and a 24-hour timeline at a glance • Live Activity and a Home Screen widget keep your timer one glance away • Smart reminders for when it's time to fast or eat TRACK YOUR PROGRESS • Log your weight and watch your trend toward your goal • Track body measurements — chest, waist, hips, and more • Water intake tracking with a daily hydration goal • Detailed reports: streaks, success rate, longest fast, and history • Celebrate streak milestones as you stay consistent STAY MOTIVATED • Helpful tips during fasting and eating windows • A weekly summary of how your fasting week went • Gentle nudges so you never lose your streak PRIVATE & YOURS • Sync with your Apple Account and back up to iCloud Drive • Export your data to CSV anytime • No accounts, no tracking, no ads RHYTHM FASTING PRO Upgrade to Pro to unlock advanced fasting plans, body-measurement tracking, detailed analytics, custom weekly scheduling, and smart daily reminders. The core timer and tracking stay free, forever. Build your rhythm. Feel the difference. Download Rhythm Fasting today. -- Intermittent fasting is a lifestyle choice and not medical advice. Consult a healthcare professional before starting any fasting or weight-loss program, especially if you are pregnant, nursing, or have a medical condition.

About

ArcFast

Track your intermittent fasting with a simple, ad-free timer. Monitor your metabolic phase, view progress charts, and customize your fasting schedule. Includes meal calorie estimates and home screen widgets.

Highlights
  • Ad-free intermittent fasting timer
  • Real-time metabolic phase tracking
  • Fasting streaks and progress charts
  • Customizable fasting schedules
  • Home screen widgets
  • Meal calorie estimation
Features
Read full description

ArcFast is a simple fasting tracker built around a free, no-ads intermittent fasting timer. Start a fast in one tap, follow your fasting window, use reminders and widgets, and review your history without clutter. KNOW YOUR BODY ArcFast displays your current metabolic phase in real-time as you fast: Sugar Burning transitions into Fat Burning, then Ketosis and Deep Ketosis. Stay informed about what's happening inside your body during every fasting window. SEE YOUR PROGRESS Fasting streaks, weekly bar charts, and detailed session history help you spot patterns and celebrate consistency. Review any missed fasts and learn from your patterns over time. BEAUTIFUL THEMES Four carefully crafted themes — Cosmos, Midnight, Cloud, and Linen — let you personalize ArcFast to match your style. Your fasting experience should feel as good as it looks. FLEXIBLE FASTING PLANS Choose from popular presets including 16:8, 18:6, 20:4, 22:2, and OMAD — or create a custom fasting schedule that fits your lifestyle. STAY ON TRACK Daily reminders to start and end your fasts, milestone notifications, and streak nudges keep you accountable without the noise. WIDGETS Add ArcFast widgets to your Home Screen for quick at-a-glance fasting status without opening the app. FOOD SCAN Add quick calorie estimates to your fasting routine. Take a photo of your meal and ArcFast gives you a clear estimate of calories and food items, so you can understand what you eat between fasting windows. Estimates are for guidance only and are not medical or nutritional advice. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Rhythm Fasting4 screens
ArcFast4 screens

Verdict

The call

The clearest difference is price: ArcFast at Free against Rhythm Fasting's $9.99. Rhythm Fasting's advantage is update cadence (every 3 days vs every 6 weeks). On ads, in-app purchases, device support 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

ArcFast is free to download; Rhythm Fasting costs $9.99 up front. Rhythm Fasting sells 3 one-off in-app purchases and ArcFast sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Rhythm Fasting ships an update every 3 days, ArcFast every 6 weeks. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 7 level
Rhythm Fasting versus ArcFast: the parameters behind the verdict, then further details
ParameterRhythm FastingArcFast
Price$9.99Free — better
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 days — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS17.617.0 — better
Further details — not scored
Size36 MB13 MB
Age rating4+4+
DeveloperPiyush AhujaKYRYL PEKAROV

In-app purchases

3 purchases

Rhythm Fasting

One-time3
  • Small Tip$0.99
  • Helping developer$4.99
  • Amazing Tip$9.99
2 purchases

ArcFast

Subscriptions2
  • Premium Monthly$4.991 Month
  • Premium Yearly$39.991 Year

Questions

Is Rhythm Fasting free?
Rhythm Fasting costs $9.99, and also offers in-app purchases.
Is ArcFast free?
ArcFast is free to download, with in-app purchases available.
Do Rhythm Fasting or ArcFast have ads?
Neither Rhythm Fasting nor ArcFast shows ads.
Which is updated more often, Rhythm Fasting or ArcFast?
Rhythm Fasting ships an update every 3 days, and ArcFast every 6 weeks. Most recently, Rhythm Fasting was updated on October 11, 2026 and ArcFast on October 12, 2026.

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