Comparison

Rhythm vs iFast

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

Head to head
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.

About

iFast

This app helps you track your fasting periods and monitor your progress towards your health goals. It supports various popular fasting methods, including circadian rhythm fasting and intermittent fasting schedules.

Highlights
  • Track fasting periods
  • Monitor progress
  • Support for popular fasting types
  • Circadian rhythm fasting
  • Intermittent fasting schedules
  • Custom prolonged fasts
Features
Read full description

iFast is your all-in-one intermittent fasting and healthy-living companion, and it is about far more than a timer. FASTING, DONE RIGHT • Any protocol: 14:10, 16:8, 18:6, OMAD or a custom window • A live timer with metabolic zones so you can see what your body is doing • Streaks, history and gentle reminders that keep you consistent HOME SCREEN AND LOCK SCREEN WIDGETS • The medium widget puts your fast, water, steps and food at a glance • A live countdown to your goal, so you always know how long is left • A small size for your fast and streak, plus Lock Screen widgets on iOS 16 and later • Tap a row in the medium widget to jump straight to logging it A COACH IN YOUR POCKET • Ask Ember, your personal coach, about fasting, food or training • Grounded, personalized guidance based on your goals and your logs ACCOUNTABILITY CIRCLES • Get matched into a small group on the same journey • Encourage each other and stay on track together TRACK WHAT MATTERS • Weight, water, steps, workouts and body measurements • Snap a photo of your meal for instant calorie and macro estimates • Clean charts that turn your data into visible progress APPLE HEALTH • Two-way sync so all your health data stays in one place iFast Pro unlocks photo meal analysis, higher coach limits and more. iFast Pro is an auto-renewable subscription. Payment is charged to your Apple ID at confirmation of purchase. It renews automatically unless canceled at least 24 hours before the end of the period; manage or cancel in your App Store account settings. Terms of Use: https://manuongithub.github.io/FastTrackerPolicies/termsofuse.html Privacy Policy: https://manuongithub.github.io/FastTrackerPolicies/privacypolicy.html

Screenshots

Rhythm4 screens
iFast4 screens

Verdict

The call

The clearest difference is ads: Rhythm at none against iFast's shown. Rhythm also leads on ratings volume (454 vs 22) and monetization model (free vs ad-supported). iFast's advantage is update cadence (every 3 days vs every 13 months) and iOS requirement (15.1 vs 17.6). On price, rating, review sentiment and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Rhythm against 4.6 for iFast. That said, the two scores are not equally well evidenced: Rhythm has 454 ratings behind it against 22, so its average is the more settled of the two. Written reviews are what separate them: 89% of Rhythm's written reviews are positive against 86% of iFast's.

UpkeepUpdate frequency

Rhythm ships an update every 13 months, iFast every 3 days. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

Scorecard5 real differences · 5 level
Rhythm versus iFast: the parameters behind the verdict, then further details
ParameterRhythmiFast
PriceFreeFree
Rating4.7 (454 ratings) — better4.6 (22 ratings)
Positive reviews88.5% of reviews — better85.7% of reviews
Number of ratings454 — better22
Update frequencyEvery 13 monthsEvery 3 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size3 MB62 MB
Age rating12+4+
DeveloperBijan CroninManu Mehrotra

Customer experience

Rhythm

All ratings444 ratings
Positive91.9%
Neutral3.8%
Negative4.3%
Written reviews235 reviews
Positive88.5%
Neutral6.0%
Negative5.5%

iFast

All ratings22 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews14 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

Bugs and requests

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

iFast

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Rhythm

No in-app purchases

None

iFast

No in-app purchases

Questions

Is Rhythm free?
Rhythm is free to download, with no in-app purchases.
Is iFast free?
iFast is free to download, with no in-app purchases.
Which has better reviews, Rhythm or iFast?
Rhythm is rated higher. Rhythm averages 4.7 out of 5 from 454 ratings, while iFast averages 4.6 from 22 ratings.
Do Rhythm or iFast have ads?
iFast shows ads; Rhythm does not.
Which is updated more often, Rhythm or iFast?
Rhythm ships an update every 13 months, and iFast every 3 days. Most recently, Rhythm was updated on October 15, 2026 and iFast on October 9, 2026.

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