Comparison

Rhythm vs WeightFast

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

WeightFast

This app helps you track intermittent fasting periods. It allows you to start and stop fasting sessions, receive notifications before your fast ends, and view detailed historical data and analytics. It supports popular fasting windows like 16/8.

Highlights
  • Intermittent fasting tracking
  • End-of-fast notifications
  • Detailed history charts
  • Analytics and progress tracking
  • Support for popular fasting windows
Features
Read full description

Whenever you have your last meal of the day, open the app and tap "START" this will start the tracking process and the app will show you when your fast ends, this is the time when you can start eating again. If you go to the settings tab, you can turn on the notifications so you could get notified 30min before your fast ends. Whenever you "STOP" your fast, the app will save this progress and start a countdown for your eating window, this is the time when you can enjoy breakfast/lunch/dinner. Features: - Intermittent fasting tracker - Notification about your fasting period 30 minutes before it ends - Detailed history charts and analytics - Most popular fasting window like 16/8, 13/11, 18/6 and 20/4 This app is created and developed by indie developer. To support our development progress, please send any suggestions in app to our email. All supports are at the bottom of the app settings screen.

Screenshots

Rhythm4 screens
WeightFast3 screens

Verdict

The call

The clearest difference is ads: Rhythm at none against WeightFast's shown. Rhythm also leads on monetization model (free vs ad-supported). WeightFast's advantage is review sentiment (100% vs 89%) and iOS requirement (14.0 vs 17.6). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard4 real differences · 6 level
Rhythm versus WeightFast: the parameters behind the verdict, then further details
ParameterRhythmWeightFast
PriceFreeFree
Rating4.7 (454 ratings) — better—
Positive reviews88.6% of reviews100.0% of reviews — better
Number of ratings454 — better—
Update frequencyEvery 13 months—
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPodiPhone, iPod
Requires iOS17.614.0 — better
Further details — not scored
Size3 MB8 MB
Age rating12+4+
DeveloperBijan CroninNhat Tran

Customer experience

Rhythm

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

WeightFast

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

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

WeightFast

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Rhythm

No in-app purchases

None

WeightFast

No in-app purchases

Questions

Is Rhythm free?
Rhythm is free to download, with no in-app purchases.
Is WeightFast free?
WeightFast is free to download, with no in-app purchases.
Do Rhythm or WeightFast have ads?
WeightFast shows ads; Rhythm does not.

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