Comparison

Intermittent Fasting Tracker vs Body Fat Calc

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

Head to head
About

Intermittent Fasting Tracker

This app offers a straightforward and private way to track intermittent fasting. It supports iPhone and Apple Watch, providing essential features like widgets, notifications, and progress charts without any advertisements. Ideal for both beginners and experienced fasters, it focuses on a simple user interface to support health and wellness goals.

Highlights
  • Interactive Widgets
  • Notifications
  • Streaks & Badges
  • Charts & Trends
  • Fasting Zones
  • iCloud Sync
  • Dark Mode
Features
Read full description

Track fasting periods with Fasty. No account or sign-up required. Start and stop a fasting timer, set a goal, and review your recorded fasts. Edit entries to correct start and end times and keep a record of your fasting history. Features - Fasting timer: see elapsed time and the time remaining until your chosen goal. - Widgets and Live Activities: check your timer from your Home Screen, Lock Screen, and Dynamic Island on supported devices. - Apple Watch: start and finish fasts, change your goal, and check your current fasting status from your wrist, included for free. - Fasting history: add, edit, and review your recorded fasts. - Charts and trends: explore fasting durations, totals, and averages over time. - Notifications: choose reminders and alerts for your timer and eating window. - Siri and Shortcuts: start and finish fasts and check your current fasting status. - CSV import and export: import existing records or export your data for use outside the app. - Dark Mode: use a light or dark appearance to suit your preference. - Streaks and badges: view summaries and milestones based on your recorded fasts. Additional paid features are available through one-time purchases and auto-renewable subscriptions. Available options, included features, and prices are shown in the app before purchase. Subscriptions renew automatically unless canceled. You can manage or cancel them in your App Store account settings. Health information Fasty is a utility for people who want to track their fasting. It does not recommend fasting or a specific fasting plan and does not provide medical advice. Consult a doctor, registered dietitian, or another qualified healthcare professional about whether and how to fast. Privacy Policy: https://fastyfasting.com/#privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Body Fat Calc

Easily monitor your body composition with this app. It estimates body fat percentage, BMI, and Waist-to-Hip Ratio using established health metrics. Track your progress with interactive graphs and access helpful guides for accurate measurements.

Highlights
  • Estimate body fat, BMI, and waist-to-hip ratio
  • Visualize progress with trend charts
  • Log and edit historical data
  • Export measurement history
  • Use metric or imperial units
  • Access step-by-step measuring guides
  • Sync with Apple Health
Features
Read full description

Body Fat Calc provides a straightforward way to monitor your body composition using several established health metrics. It estimates body fat percentage via the US Navy method and calculates your Body Mass Index (BMI) and Waist-to-Hip Ratio (WHR) to give you a clear picture of your physical health. The app supports Metric and Imperial measurement systems with the flexibility to mix units, allowing you to enter data in the specific units you prefer. If you are unsure how to take measurements, the built-in help guide provides clear instructions for recording your mass, height, neck, waist, and hip circumferences accurately. The Trends view allows you to visualise your progress over time through interactive graphs, while the history log provides the ability to add, edit, or export your records at any time. Key features overview: • Comprehensive Metrics: Estimate body fat, BMI, and waist-to-hip ratio in one place. • Progress Tracking: Monitor your journey with interactive trend charts and historical data. • Flexible Logging: Add records directly to your history or edit past entries for accuracy. • Data Portability: Quickly export your full measurement history whenever needed. • Custom Units: Use metric or imperial units with the ability to mix and match inputs. • Step-by-Step Guides: Access measuring guides to ensure consistent and accurate data. • Health Sync: Seamlessly sync your measurements and results with Apple Health.

Screenshots

Intermittent Fasting Tracker4 screens
Body Fat Calc4 screens

Verdict

The call

The clearest difference is monetization model: Body Fat Calc at free against Intermittent Fasting Tracker's free with in-app purchases. Intermittent Fasting Tracker's advantage is ratings volume (52K vs 1). On price, rating, review sentiment and update cadence 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 Fasting Tracker sells 17 in-app purchases, starting at $0.99 per month and Body Fat Calc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Intermittent Fasting Tracker against 5.0 for Body Fat Calc. That said, the two scores are not equally well evidenced: Intermittent Fasting Tracker has 52K ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 97% of Intermittent Fasting Tracker's written reviews are positive against 100% of Body Fat Calc's.

UpkeepUpdate frequency

Intermittent Fasting Tracker ships an update every 10 days, Body Fat Calc every 9 days. Both last shipped on October 24, 2026.

Scorecard2 real differences · 8 level
Intermittent Fasting Tracker versus Body Fat Calc: the parameters behind the verdict, then further details
ParameterIntermittent Fasting TrackerBody Fat Calc
PriceFreeFree
Rating4.9 (52K ratings)5.0 (1 ratings) — better
Positive reviews96.9% of reviews100.0% of reviews — better
Number of ratings52K — better1
Update frequencyEvery 10 daysEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS17.016.6 — better
Further details — not scored
Size111 MB5 MB
Age rating12+4+
DeveloperKai OelfkePatrick James McGarrity

Customer experience

Intermittent Fasting Tracker

All ratings51,777 ratings
Positive97.8%
Neutral1.5%
Negative0.7%
Written reviews2,954 reviews
Positive96.9%
Neutral1.6%
Negative1.5%

Body Fat Calc

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Intermittent Fasting Tracker

Reported bugs

2 issues
  • Overlapping fasting/eating windows reported
  • Inconsistencies in fasting time calculations

Requested features

4 requests
  • Ability to schedule and set reminders for fasts
  • Option to manually log ketosis levels
  • Export or share fasting data
  • More detailed fasting stage information

Body Fat Calc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

17 purchases

Intermittent Fasting Tracker

Subscriptions9
  • Fasty Monthly Donation$0.991 Month
  • Fasty Basic Monthly$0.991 Month
  • Fasty Monthly Donation$1.991 Month
Show 6 more
  • Fasty Basic Monthly$1.991 Month
  • Fasty Monthly Donation$2.991 Month
  • Fasty Basic Yearly$4.991 Year
  • Fasty Basic Yearly$6.691 Year
  • Fasty Pro Monthly2 variants$6.991 Month
  • Fasty Pro Yearly2 variants$19.991 Year
One-time8
  • One Time Donation$4.99
  • Fasty Basic One Time$9.99
  • One Time Donation$9.99
Show 5 more
  • One Time Donation$14.99
  • One Time Donation$24.99
  • One Time Donation$34.99
  • Fasty Pro One Time2 variants$49.99
  • One Time Donation$49.99
1 purchases

Body Fat Calc

One-time1
  • Pro$1.99

Questions

Is Intermittent Fasting Tracker free?
Intermittent Fasting Tracker is free to download, with in-app purchases available.
Is Body Fat Calc free?
Body Fat Calc is free to download, with in-app purchases available.
Which has better reviews, Intermittent Fasting Tracker or Body Fat Calc?
Body Fat Calc is rated higher. Intermittent Fasting Tracker averages 4.9 out of 5 from 52K ratings, while Body Fat Calc averages 5.0 from 1 ratings.
Do Intermittent Fasting Tracker or Body Fat Calc have ads?
Neither Intermittent Fasting Tracker nor Body Fat Calc shows ads.
Which is updated more often, Intermittent Fasting Tracker or Body Fat Calc?
Intermittent Fasting Tracker ships an update every 10 days, and Body Fat Calc every 9 days. Most recently, Intermittent Fasting Tracker was updated on October 24, 2026 and Body Fat Calc on October 24, 2026.

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