# Intermittent Fasting vs DoFast

The clearest difference is in-app purchases: DoFast at none against Intermittent Fasting's 2. Intermittent Fasting's advantage is update cadence (fortnightly vs every 2 months) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Intermittent Fasting sells 2 in-app purchases, starting at $3.99 per 7 days. DoFast asks for nothing beyond the download.

Intermittent Fasting ships an update fortnightly, DoFast every 2 months. The most recent releases landed on October 9, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Intermittent Fasting | DoFast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 30 MB | 8 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Manuel Worlitzer](https://appshunter.io/developer/1785527240) | [Igor Lenderman](https://appshunter.io/developer/1886154638) |

## What reviewers say

### Intermittent Fasting

[App page](https://appshunter.io/ios/app/intermittent-fasting-plan/id6749179087)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intermittent Fasting Premium | $3.99 | per 7 days |
| Intermittent Fasting Premium | $19.99 | per year |


### DoFast

[App page](https://appshunter.io/ios/app/dofast-intermittent-fasting/id6760772207)

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

**In-app purchases:** none


## Frequently asked questions

### Is Intermittent Fasting free?

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

### Is DoFast free?

DoFast is free to download, with no in-app purchases.

### Do Intermittent Fasting or DoFast have ads?

Neither Intermittent Fasting nor DoFast shows ads.

### Which is updated more often, Intermittent Fasting or DoFast?

Intermittent Fasting ships an update fortnightly, and DoFast every 2 months. Most recently, Intermittent Fasting was updated on October 9, 2026 and DoFast on October 16, 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.*