# FastMode vs ChronoFast AI

The clearest difference is ads: FastMode at none against ChronoFast AI's shown. FastMode also leads on update cadence (every 3 days vs every 2 weeks) and device support (4 vs 2). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. FastMode sells 2 in-app purchases, starting at $2.99 per month and ChronoFast AI sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for FastMode against 5.0 for ChronoFast AI. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

FastMode ships an update every 3 days, ChronoFast AI every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | FastMode | ChronoFast AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/fastmode-fasting-tracker/id6758218794/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/chronofast-ai/id6759078045/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Size | 39 MB | 118 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Bart Goutbeek](https://appshunter.io/developer/1870354103) | [Soundarya Srinivas](https://appshunter.io/developer/1896661055) |

## What reviewers say

### FastMode

[App page](https://appshunter.io/ios/app/fastmode-fasting-tracker/id6758218794)

This app simplifies intermittent fasting with an easy-to-use timer and progress tracking. Monitor your fasting schedule, view statistics, and earn badges to stay motivated on your health journey.

**Highlights:** Simple fasting timer, Flexible fasting schedules, Progress statistics, Milestone badges, Apple Health integration, Dark mode

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastMode Pro Monthly | $2.99 | per month |
| FastMode Pro Yearly | $24.99 | per year |


### ChronoFast AI

[App page](https://appshunter.io/ios/app/chronofast-ai/id6759078045)

This app acts as an AI coach for intermittent fasting, helping users understand if their food intake breaks their fast. It provides detailed metabolic stage information, tracks progress, and offers social features for fasting with friends.

**Highlights:** AI-powered 'Did I Break My Fast?' analysis, Live Activity and Dynamic Island integration, Detailed metabolic stage tracking with scientific sources, Apple Health integration for activity and sleep data, AI meal scanning and barcode scanning, Social fasting features with friends and leaderboards

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChronoFast-AI-Monthly-Yearly | $2.99 | per month |
| ChronoFast-AI-Monthly-Yearly | $34.99 | per year |


## Frequently asked questions

### Is FastMode free?

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

### Is ChronoFast AI free?

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

### Which has better reviews, FastMode or ChronoFast AI?

FastMode and ChronoFast AI are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do FastMode or ChronoFast AI have ads?

ChronoFast AI shows ads; FastMode does not.

### Which is updated more often, FastMode or ChronoFast AI?

FastMode ships an update every 3 days, and ChronoFast AI every 2 weeks. Most recently, FastMode was updated on October 24, 2026 and ChronoFast AI on October 24, 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.*