# The Fast vs CoreFast

The clearest difference is update cadence: CoreFast at daily against The Fast's every 3 days. CoreFast also leads on device support (3 vs 1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for The Fast against 5.0 for CoreFast. Both are backed by a comparable volume of ratings — 3 and 4 respectively.

The Fast ships an update every 3 days, CoreFast daily. Both last shipped on October 29, 2026.

## The numbers

| Metric | The Fast | CoreFast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/the-fast-fasting-timer/id6813492448/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/corefast-intermittent-fasting/id6814694953/reviews) |
| Number of ratings | 3 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Monetization | Free | Free |
| Size | 31 MB | 55 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [Prime Adventure LLC](https://appshunter.io/developer/6803535656) | [SATISH CHANDRA KOLLI](https://appshunter.io/developer/6814694955) |

## What reviewers say

### The Fast

[App page](https://appshunter.io/ios/app/the-fast-fasting-timer/id6813492448)

Track your fasting periods with a visual timer and home screen widgets. Review your history in a calendar and share your progress as an image. Use the app without an account for local data storage, or sign in to sync across devices.

**Highlights:** Visual fasting timer, Home screen widgets, Fasting history calendar, Shareable progress images, Account-free operation, Cross-device sync

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

**In-app purchases:** none


### CoreFast

[App page](https://appshunter.io/ios/app/corefast-intermittent-fasting/id6814694953)

This app helps you track intermittent fasting with customizable plans and a live timer. It offers optional food and water logging, and can integrate with health data. Features include reminders, streaks, and social challenges, all while prioritizing user privacy.

**Highlights:** Customizable intermittent fasting plans, Live accurate timer, Optional food and water logging, Apple Health integration for readings, Privacy-focused, data stays on device, Widgets and Apple Watch app support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is The Fast free?

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

### Is CoreFast free?

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

### Which has better reviews, The Fast or CoreFast?

The Fast and CoreFast are both rated 5.0 out of 5 on the App Store, from 3 and 4 ratings respectively.

### Do The Fast or CoreFast have ads?

Neither The Fast nor CoreFast shows ads.

### Which is updated more often, The Fast or CoreFast?

The Fast ships an update every 3 days, and CoreFast daily. Most recently, The Fast was updated on October 29, 2026 and CoreFast on October 29, 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.*