# Intermittent Fasting vs Fast AI

Intermittent Fasting and Fast AI both sit at 4.5 stars, but that hides the real split: 60% of Intermittent Fasting's written reviews are positive against 7% of Fast AI's. Fast AI's advantage is ads (none vs shown). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Intermittent Fasting sells 8 in-app purchases, starting at $4.99 per 7 days and Fast AI sells 5 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.5 for Intermittent Fasting against 4.3 for Fast AI. Both are backed by a comparable volume of ratings — 102 and 120 respectively. Written reviews are what separate them: 60% of Intermittent Fasting's written reviews are positive against 7% of Fast AI's.

Intermittent Fasting ships an update every 3 weeks, Fast AI every 2 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Intermittent Fasting | Fast AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (102 ratings)](https://appshunter.io/ios/app/intermittent-fasting-tracker/id1565096160/reviews)** | [4.3 (120 ratings)](https://appshunter.io/ios/app/fast-ai-intermittent-fasting/id1629661646/reviews) |
| Number of ratings | 102 | **120** |
| Positive reviews | **60.0% of reviews** | 7.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 50 MB | 101 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [REIFOT TEKHNIKS, TOV](https://appshunter.io/developer/1603229566) | [Kiryl Salavei](https://appshunter.io/developer/1033680093) |

## What reviewers say

### Intermittent Fasting

[App page](https://appshunter.io/ios/app/intermittent-fasting-tracker/id1565096160)

This app helps you track intermittent fasting to support weight loss and improve metabolic health. It offers customizable plans, progress monitoring, and insights into your body's fasting zones. Integrates with health apps to sync water and weight data.

**Highlights:** Fasting timer and goal tracking, Customizable fasting plans, Health app integration (water, weight), Progress monitoring and personalized insights, Fasting zones explanation, Mood journaling, Premium content

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Week | $4.99 | per 7 days |
| My Intermittent Fasting app | $6.99 | per 7 days |
| Premium Month | $14.99 | per month |
| Premium Month with trial | $16.99 | per month |
| Premium 3 Months | $29.99 | per 3 months |
| My Intermittent Fasting 3month | $39.99 | per 3 months |
| Premium Year | $59.99 | per year |
| Intermittent Fasting app year | $74.99 | per year |


### Fast AI

[App page](https://appshunter.io/ios/app/fast-ai-intermittent-fasting/id1629661646)

This app helps users achieve weight loss and improve well-being through intermittent fasting. It provides tracking, scheduling, and detailed analytics to guide users through various fasting plans. The app aims to make fasting a natural and effective part of a healthy lifestyle.

**Highlights:** Intermittent fasting tracker, Weight monitoring, Fasting and food window notifications, Detailed analytics, Multiple fasting schemes (e.g., 16/8), Fasting schedule, Apple Health weight sync

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simple intermittent fasting | $5.99 | per 7 days |
| Intermittent Fasting 1 Month | $12.99 | per month |
| Personal Fast Program 3 Month | $19.99 | per 3 months |
| Intermittent Fasting + Tracker | $35.99 | per year |
| Intermittent Fasting Annual | $49.99 | per year |


## Frequently asked questions

### Is Intermittent Fasting free?

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

### Is Fast AI free?

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

### Which has better reviews, Intermittent Fasting or Fast AI?

Intermittent Fasting is rated higher. Intermittent Fasting averages 4.5 out of 5 from 102 ratings, while Fast AI averages 4.3 from 120 ratings.

### Do Intermittent Fasting or Fast AI have ads?

Intermittent Fasting shows ads; Fast AI does not.

### Which is updated more often, Intermittent Fasting or Fast AI?

Intermittent Fasting ships an update every 3 weeks, and Fast AI every 2 weeks. Most recently, Intermittent Fasting was updated on November 3, 2026 and Fast AI on November 3, 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.*