# ChronoFast AI vs Ketl

The clearest difference is ads: Ketl at none against ChronoFast AI's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. ChronoFast AI sells 2 in-app purchases, starting at $4.99 per month and Ketl sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | ChronoFast AI | Ketl |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chronofast-ai/id6759078045/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 121 MB | 5 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Soundarya Srinivas](https://appshunter.io/developer/1896661055) | [Christopher Mayberry](https://appshunter.io/developer/1390482166) |

## What reviewers say

### 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 insights, 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, Apple Health integration for activity and sleep, AI meal scan and barcode scanning, Social fasting features and leaderboards

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChronoFast-AI-Monthly-Yearly | $4.99 | per month |
| ChronoFast-AI-Monthly-Yearly | $39.99 | per year |


### Ketl

[App page](https://appshunter.io/ios/app/ketl-fasting-tracker/id6761768491)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ketl Pro Monthly | $2.99 | per month |
| Ketl Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is ChronoFast AI free?

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

### Is Ketl free?

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

### Do ChronoFast AI or Ketl have ads?

ChronoFast AI shows ads; Ketl does not.

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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.*