Comparison

FastHabit Intermittent Fasting vs Rhythm

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

Head to head
About

FastHabit Intermittent Fasting

This app helps you establish and maintain intermittent fasting routines. It offers flexible tracking, reminders, and integrates with Apple Health and Apple Watch to monitor your progress and weight.

Highlights
  • Flexible fast length setting
  • Daily logging and progress tracking
  • Reminders and notifications
  • Weight tracking
  • Apple HealthKit integration
  • Apple Watch support
  • Data export
Features
Read full description

FastHabit helps you start and stay consistent with Intermittent Fasting. Set your fast length, log daily, and use advanced features like reminders, weight tracking and Health App syncing, Apple Watch integration, calendar views, data export, and multi-day fasting to track your progress and accelerate your results. SIMPLE, FLEXIBLE TRACKING - Choose how many hours you want to fast - Keep your motivation in view- See percent complete, time completed, time remaining, and target end. - Easy editing. Stop, restart, or adjust your fast at any time. SYNC EVERYWHERE - Apple Watch integration: Leave your phone at home and still track your fast. - Save and transfer your fasts to a new device with iCloud syncing - FastHabit also integrates with Apple HealthKit. This lets you sync your logged weight in the app automatically to your HealthKit profile. FastHabit also pulls in updated weight data from HealthKit if enabled, to always keep your weight data in sync across the board. SET REMINDERS AND NOTIFICATIONS - Choose the days and times you want reminders to start fasting - Get a notification when your fast is complete MOTIVATIONAL STATS AND PROGRESS: - 10 day Snapshot with ‘streaks’ to show how many days in a row you’ve fasted and how many days you’ve met your goals – a great way to stay motivated. - Calendar and weekly views with daily details - Weight tracking views with fasting overlay MORE GREAT FEATURES - Apple watch complications - iPhone widget - Getting started guide - Enhanced support for longer, multi-day fasts - Export your data FastHabit has been featured in GQ, the Guardian, and Fast Company. --- FastHabit offers an optional auto-renewing annual Premium Subscription (price varies by territory, may include free trial) located on the Upgrade page. Payments will be charged to your iTunes Account after confirmation. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the subscription period. Account will be charged for renewal within 24 hours prior to the end of the current period. Subscriptions may be managed in your iTunes Account’s Settings after purchasing. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy Policy: https://fasthabit.com/privacy-policy Terms of Service: https://fasthabit.com/terms-of-service

About

Rhythm

This app simplifies intermittent fasting with a daily tracker. It supports various fasting schedules, from beginner-friendly to advanced, and helps users monitor their progress over time. Get notifications when your fast is complete.

Highlights
  • Daily fasting tracker
  • Flexible schedule support
  • Weekly progress tracking
  • Customizable fasting goals
  • One-click start
  • Progress monitoring
  • Completion notifications
Features
Read full description

Rhythm is a simple intermittent fasting tracker for people who want a clean fast timer without the bloat. No account. No ads. Just a focused way to start a fast, stay on track, and review your history when you're done. Choose any fasting goal from 7 to 24 hours, including popular rhythms like 16:8 and 18:6. Start a fast in seconds, follow your progress live, and switch between countdown and elapsed timer views. Rhythm helps you stay consistent with: - flexible fasting goals - multiple fasts in the same day - reminder and completion notifications - editable fasting history - weekly progress insights If you want a fasting app that feels simple, respectful, and easy to trust, Rhythm gives you the essentials and gets out of your way.

Screenshots

FastHabit Intermittent Fasting4 screens
Rhythm4 screens

Verdict

The call

The clearest difference is in-app purchases: Rhythm at none against FastHabit Intermittent Fasting's 3. Rhythm also leads on review sentiment (89% vs 58%). FastHabit Intermittent Fasting's advantage is update cadence (monthly vs every 13 months) and ratings volume (14K vs 458). On price, rating, ads 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. FastHabit Intermittent Fasting sells 2 in-app purchases, starting at $59.99 per year. Rhythm asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for FastHabit Intermittent Fasting against 4.7 for Rhythm. That said, the two scores are not equally well evidenced: FastHabit Intermittent Fasting has 14K ratings behind it against 458, so its average is the more settled of the two. Written reviews are what separate them: 58% of FastHabit Intermittent Fasting's written reviews are positive against 89% of Rhythm's.

UpkeepUpdate frequency

FastHabit Intermittent Fasting ships an update monthly, Rhythm every 13 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

Scorecard6 real differences · 4 level
FastHabit Intermittent Fasting versus Rhythm: the parameters behind the verdict, then further details
ParameterFastHabit Intermittent FastingRhythm
PriceFreeFree
Rating4.8 (14K ratings) — better4.7 (458 ratings)
Positive reviews57.9% of reviews88.6% of reviews — better
Number of ratings14K — better458
Update frequencyMonthly — betterEvery 13 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPod, Apple Watch — betteriPhone, iPod
Requires iOS15.0 — better17.6
Further details — not scored
Size31 MB3 MB
Age rating4+12+
DeveloperApp HoldingsBijan Cronin

Customer experience

FastHabit Intermittent Fasting

All ratings13,878 ratings
Positive94.2%
Neutral2.8%
Negative3.0%
Written reviews373 reviews
Positive57.9%
Neutral10.7%
Negative31.4%

Rhythm

All ratings444 ratings
Positive91.9%
Neutral3.8%
Negative4.3%
Written reviews236 reviews
Positive88.6%
Neutral5.9%
Negative5.5%

User reviews

FastHabit Intermittent Fasting

From 14K App Store ratings

What we love

  • 🚀 Simple and easy to use
  • 👍 Clean and intuitive interface
  • 🚀 Straightforward fasting tracking
  • 🚀 Seamless Apple Watch integration
  • 💰 Reasonable one-time purchase

Room to improve

  • 🐛 Issues with syncing across devices
  • 🐛 Bugs with editing/extending fasts
  • 🔒 Lack of cloud/iCloud sync
  • 🔒 Limited customization options
  • 🐛 Unreliable reminders/notifications

Rhythm

From 458 App Store ratings

What we love

  • 💎 Simple and easy to use
  • 🆓 Free app with no ads or subscriptions
  • ⏱️ Straightforward fasting timer
  • 📊 Tracks fasting progress
  • 🔍 Allows editing of start/end times

Room to improve

  • ⏰ Can't track fasts longer than 24 hours
  • 📅 Limited history view (only past week)
  • 🔔 Lacks customizable notifications/reminders

Bugs and requests

FastHabit Intermittent Fasting

Reported bugs

3 issues
  • App freezing or crashing after updates
  • Inability to manually add or edit fasts
  • Inconsistent tracking of long fasts across days

Requested features

5 requests
  • Ability to track multiple fasts per day
  • Option to set custom fasting duration goals
  • More detailed fasting history and analytics
  • Improved Apple Watch complications and controls
  • Integration with other health/fitness apps

Rhythm

Reported bugs

2 issues
  • Can't add past fasts
  • Inconsistent weekly progress tracking

Requested features

5 requests
  • Ability to track longer fasts (e.g., 48-72 hours)
  • Option to view fasting history beyond the past week
  • Customizable notifications and reminders
  • Integration with health/fitness tracking apps
  • Weight tracking and progress visualization

In-app purchases

2 purchases

FastHabit Intermittent Fasting

Subscriptions1
  • FastHabit Premium1 Year trial2 variants$59.991 Year
One-time1
  • Upgrade To Pro$2.99
None

Rhythm

No in-app purchases

Questions

Is FastHabit Intermittent Fasting free?
FastHabit Intermittent Fasting is free to download, with in-app purchases available.
Is Rhythm free?
Rhythm is free to download, with no in-app purchases.
Which has better reviews, FastHabit Intermittent Fasting or Rhythm?
FastHabit Intermittent Fasting is rated higher. FastHabit Intermittent Fasting averages 4.8 out of 5 from 14K ratings, while Rhythm averages 4.7 from 458 ratings.
Do FastHabit Intermittent Fasting or Rhythm have ads?
Neither FastHabit Intermittent Fasting nor Rhythm shows ads.
Which is updated more often, FastHabit Intermittent Fasting or Rhythm?
FastHabit Intermittent Fasting ships an update monthly, and Rhythm every 13 months. Most recently, FastHabit Intermittent Fasting was updated on October 24, 2026 and Rhythm on October 23, 2026.

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