# iF vs interfasting

The clearest difference is update cadence: interfasting at every 5 days against iF's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. iF sells 3 one-off in-app purchases and interfasting sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

iF ships an update every 2 months, interfasting every 5 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | iF | interfasting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/interfasting/id6751507755/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | — | Free |
| Size | 45 MB | 3 MB |
| Requires iOS | **18.0** | 18.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hans Babylone](https://appshunter.io/developer/1550504166) | [Ivan Morel](https://appshunter.io/developer/1497560273) |

## What reviewers say

### iF

[App page](https://appshunter.io/ios/app/if-interfast/id1550503953)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intermediate level | $2.99 | one-time |
| Experienced Level | $3.99 | one-time |
| Personalized & Statistics | $4.99 | one-time |


### interfasting

[App page](https://appshunter.io/ios/app/interfasting/id6751507755)

This app helps users achieve wellness goals through intermittent fasting. It offers custom fasting plans, real-time progress tracking, and detailed statistics on fasting success and weight changes. The app prioritizes privacy with local data storage and no account creation required.

**Highlights:** Custom fasting plans (16:8, 18:6, 20:4), Real-time progress countdown, Session history and statistics, Weight tracking and visualization, Success/failure tracking, Data export for healthcare providers, Local data storage for privacy

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| InterFasting Pro | $9.99 | per month |
| InterFasting Pro (Yearly) | $108.99 | per year |


## Frequently asked questions

### Is iF free?

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

### Is interfasting free?

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

### Do iF or interfasting have ads?

Neither iF nor interfasting shows ads.

### Which is updated more often, iF or interfasting?

iF ships an update every 2 months, and interfasting every 5 days. Most recently, iF was updated on November 3, 2026 and interfasting on October 30, 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.*