# Intermittent vs Clean Fast

The clearest difference is update cadence: Intermittent at every 4 days against Clean Fast's every 2 weeks. Intermittent also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Intermittent sells 4 in-app purchases, starting at $4.99 per month and Clean Fast sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Intermittent ships an update every 4 days, Clean Fast every 2 weeks. The most recent releases landed on November 9, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Intermittent | Clean Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (21 ratings)](https://appshunter.io/ios/app/intermittent-fasting-tracker-plus/id6756629485/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 33 MB | 23 MB |
| Requires iOS | **17.6** | 18.2 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [BARBAROS SELIM BUYUKELCI](https://appshunter.io/developer/1861903946) | [Omar Battan](https://appshunter.io/developer/6815993257) |

## What reviewers say

### Intermittent

[App page](https://appshunter.io/ios/app/intermittent-fasting-tracker-plus/id6756629485)

Easily track your intermittent fasting with a visual timeline and preset or custom plans. Integrate with Apple Health for a holistic view of your wellness. Stay updated with widgets and Apple Watch support.

**Highlights:** Fasting timer, Visual stage timeline, Preset and custom plans, Apple Health integration, Apple Watch app, Widgets and Live Activities

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| 3 Months Premium | $9.99 | per 3 months |
| 6 Months Premium | $24.99 | per 6 months |
| Yearly Premium | $34.99 | per year |


### Clean Fast

[App page](https://appshunter.io/ios/app/clean-fast-fasting-timer-168/id6820460319)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clean Fast Freeze Pack | $1.99 | one-time |
| Clean Fast PRO | $4.99 | one-time |


## Frequently asked questions

### Is Intermittent free?

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

### Is Clean Fast free?

Clean Fast is free to download, with in-app purchases available.

### Do Intermittent or Clean Fast have ads?

Neither Intermittent nor Clean Fast shows ads.

### Which is updated more often, Intermittent or Clean Fast?

Intermittent ships an update every 4 days, and Clean Fast every 2 weeks. Most recently, Intermittent was updated on November 9, 2026 and Clean Fast on November 13, 2026.

---

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