# Rhythm Fasting vs Fasted Harmony

The clearest difference is price: Fasted Harmony at Free against Rhythm Fasting's $9.99. Rhythm Fasting's advantage is update cadence (every 3 days vs every 2 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Fasted Harmony is free to download; Rhythm Fasting costs $9.99 up front. Rhythm Fasting sells 3 one-off in-app purchases and Fasted Harmony sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Rhythm Fasting ships an update every 3 days, Fasted Harmony every 2 weeks. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Rhythm Fasting | Fasted Harmony |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fasted-harmony-cycle-syncing/id6763795183/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | — | Freemium |
| Size | 36 MB | 134 MB |
| Requires iOS | 17.6 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Piyush Ahuja](https://appshunter.io/developer/1884806570) | [Larvotto Ventures LLC](https://appshunter.io/developer/1892090570) |

## What reviewers say

### Rhythm Fasting

[App page](https://appshunter.io/ios/app/rhythm-fasting-if-tracker/id6760611132)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Helping developer | $4.99 | one-time |
| Amazing Tip | $9.99 | one-time |


### Fasted Harmony

[App page](https://appshunter.io/ios/app/fasted-harmony-cycle-syncing/id6763795183)

This app syncs intermittent fasting windows with your menstrual cycle, optimizing fasting times based on hormonal phases. It offers cycle tracking, symptom logging, and AI-powered guidance to help you fast smarter and achieve better results.

**Highlights:** Phase-specific fasting windows (12-18 hrs), Smart cycle tracking with predictions, AI Hormone Coach for personalized guidance, Symptom, mood, and energy logging, Weight trends overlaid on cycle phases, CSV data export

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Yearly | $45.99 | per year |


## Frequently asked questions

### Is Rhythm Fasting free?

Rhythm Fasting costs $9.99, and also offers in-app purchases.

### Is Fasted Harmony free?

Fasted Harmony is free to download, with in-app purchases available.

### Do Rhythm Fasting or Fasted Harmony have ads?

Neither Rhythm Fasting nor Fasted Harmony shows ads.

### Which is updated more often, Rhythm Fasting or Fasted Harmony?

Rhythm Fasting ships an update every 3 days, and Fasted Harmony every 2 weeks. Most recently, Rhythm Fasting was updated on October 11, 2026 and Fasted Harmony on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*