# Fast AI vs Faast

The clearest difference is in-app purchases: Faast at none against Fast AI's 5. Faast also leads on update cadence (every 2 days vs every 2 weeks). Fast AI's advantage is iOS requirement (14.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Fast AI sells 5 in-app purchases, starting at $5.99 per 7 days. Faast asks for nothing beyond the download.

Fast AI ships an update every 2 weeks, Faast every 2 days. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Fast AI | Faast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (120 ratings)](https://appshunter.io/ios/app/fast-ai-intermittent-fasting/id1629661646/reviews)** | — |
| Number of ratings | **120** | — |
| Positive reviews | 7.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 101 MB | 5 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kiryl Salavei](https://appshunter.io/developer/1033680093) | [Loan RIVIERE](https://appshunter.io/developer/1843899230) |

## What reviewers say

### 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 |


### Faast

[App page](https://appshunter.io/ios/app/faast-fasting-timer/id6787727897)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fast AI free?

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

### Is Faast free?

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

### Do Fast AI or Faast have ads?

Neither Fast AI nor Faast shows ads.

### Which is updated more often, Fast AI or Faast?

Fast AI ships an update every 2 weeks, and Faast every 2 days. Most recently, Fast AI was updated on October 12, 2026 and Faast on October 11, 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.*