Comparison

Fasting Center vs Intermitto

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

Head to head
About

Fasting Center

Plan extended fasts with personalized projections. Input your body stats and desired duration to estimate weight change, fat loss, and energy use. This data-driven tool provides a clear starting point for your fasting journey.

Highlights
  • Personalized fast planning
  • Extended fast duration options
  • Projected weight change
  • Estimated fat loss
  • Energy use projection
  • Data-driven starting point
Features
Read full description

Free fasting tracker and timer for intermittent fasting, OMAD, and extended water fasts. No ads, no account needed. Fasting Center is built around your numbers, not generic guesses. Start a fast, follow 17 fasting stages on a live ring, and see weight, fat loss, and energy use projected from your own body stats, then measured against what actually happened. TRACK YOUR FAST - Timer with stage markers: fat burning, ketosis, autophagy, and more - Any schedule: 16:8, 18:6, 20:4, OMAD, multi-day extended, or open-ended - Live Activity and Dynamic Island on iPhone, home screen widgets - Edit start and end times when life happens - Projected vs measured weight loss, side by side ASK YOUR FASTING ASSISTANT - Ask about your fasts, your weight, or how you feel during a fast - Answers based on your own log and the fasting.center knowledge base - Runs the calculators for you - how long to a goal weight or a body fat target - Free, with a daily limit of questions TWO CALCULATORS - Extended fast: total weight change, fat, water, glycogen, and protein loss day by day - Intermittent fasting: daily calorie deficit and expected weight change for your window - Personalized from your sex, age, height, weight, body fat, and activity MEASURE YOUR PROGRESS - Log weight, body fat, waist, ketones, glucose, and blood pressure - Rate energy, hunger, motivation, and stress during a fast - Apple Health sync: weight and body fat flow in automatically - Charts over 24h, 7 days, 30 days, 90 days, and a year - Import your history from Zero and Easy Fast YOUR DATA, YOURS - Free, no ads, no subscription - Works fully as a guest; optional sign-in with Apple or Google for cloud backup and sync - Delete your data and account anytime, completely Whether you are planning your first extended fast or fine-tuning a routine you have run for years, Fasting Center shows you what to expect and what actually happened. Fasting Center is a planning and estimation tool and does not provide medical advice. Consult a healthcare provider before starting an extended fast, especially if you have any underlying health conditions.

About

Intermitto

Features
Read full description

Build a consistent fasting routine without noise, pressure or unnecessary complexity. Intermitto is a simple intermittent fasting tracker designed to make every fast easy to start, follow and record. Choose a fasting plan, start the timer with one tap and see your progress at a glance. No advertisements and no mandatory account—just a calm, private way to stay consistent. EASY FASTING TIMER • Start and end a fast with one tap • Follow elapsed time, remaining time and your target end time • Continue counting after reaching your goal • Edit the start or end time if you forgot to tap • Change your target during an active fast • Automatically recover an active fast after closing the app FLEXIBLE FASTING PLANS Select a popular intermittent fasting schedule or create your own: • 12:12 • 14:10 • 16:8 • 18:6 • 20:4 • OMAD / 23:1 • Custom fasting duration FOLLOW YOUR PROGRESS • Review completed fasts in your history and calendar • Build current and longest fasting streaks • See total fasts, total hours and average duration • View clear weekly and monthly trends • Record personal notes and milestones • Add optional weight entries and follow your trend over time REMINDERS THAT FIT YOUR ROUTINE Set helpful notifications for planned start times, fasting goals and eating windows. You decide which reminders are enabled and when they appear. AVAILABLE ACROSS YOUR APPLE DEVICES Monitor your fast with Apple Watch, Home Screen and Lock Screen widgets, Live Activities and Dynamic Island. Optional iCloud sync keeps your fasting history available across supported Apple devices without requiring a separate Intermitto account. PRIVATE BY DESIGN Intermitto works offline and keeps essential fasting features available without an internet connection. Apple Health connection is optional, and the app remains fully usable if you choose not to grant access. Intermitto does not use fasting times, weight entries, notes or Apple Health information for advertising analytics. INTERMITTO PRO Upgrade to Intermitto Pro for advanced charts, custom date ranges, additional themes, complete widget and Apple Watch complication options, unlimited custom plans, enhanced milestones, and PDF or CSV progress reports. INTERMITTO PRO PRICING • Monthly — USD 2.99 per month, auto-renewing • Yearly — USD 14.99 per year, auto-renewing • Lifetime — USD 29.99, a single purchase that does not renew Prices are shown in your local currency and may vary by region. IMPORTANT HEALTH INFORMATION Intermitto is a wellness and tracking tool. It is not a medical device and does not provide medical advice, diagnosis or treatment. Fasting may not be appropriate for everyone. Consult a qualified healthcare professional before fasting if you are pregnant or breastfeeding, have diabetes, have a history of eating disorders, have a chronic health condition or take medication that may be affected by changes to your eating schedule. Pause with purpose. Build your rhythm with Intermitto. ——— This app offers an auto-renewable subscription (intermitto_pro_monthly, intermitto_pro_yearly). Payment is charged to your Apple Account at purchase confirmation. It renews automatically unless turned off at least 24 hours before the current period ends; your account is charged for renewal within 24 hours before the period ends. Manage or cancel anytime in your Apple Account settings. Prices may vary by region. A one-time lifetime purchase is also available. Privacy Policy: https://www.arific.com/privacy-policy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Fasting Center4 screens
Intermitto4 screens

Verdict

The call

The clearest difference is in-app purchases: Fasting Center at none against Intermitto's 3. Fasting Center also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price and ads 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. Intermitto sells 3 in-app purchases, starting at $2.99 per month. Fasting Center asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Fasting Center versus Intermitto: the parameters behind the verdict, then further details
ParameterFasting CenterIntermitto
PriceFreeFree
Rating4.7 (18 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings18 — better—
Update frequencyEvery 3 days—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, Apple Watch
Requires iOS15.0 — better17.0
Further details — not scored
Size46 MB10 MB
Age rating12+4+
DeveloperAndrey Titovprosafe ltd

In-app purchases

None

Fasting Center

No in-app purchases

3 purchases

Intermitto

Subscriptions2
  • Intermitto Pro Monthly$2.991 Month
  • Intermitto Pro Yearly$14.991 Year
One-time1
  • Intermitto Pro Lifetime$29.99

Questions

Is Fasting Center free?
Fasting Center is free to download, with no in-app purchases.
Is Intermitto free?
Intermitto is free to download, with in-app purchases available.
Do Fasting Center or Intermitto have ads?
Neither Fasting Center nor Intermitto shows ads.

Other comparisons