# Fast Slow vs Fast Feast Repeat

The clearest difference is device support: Fast Feast Repeat at 3 against Fast Slow's 1. Fast Feast Repeat also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Fast Slow sells 4 in-app purchases, starting at $1.99 per 7 days and Fast Feast Repeat sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

Fast Slow ships an update every 2 weeks, Fast Feast Repeat every 4 weeks. The most recent releases landed on October 17, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Fast Slow | Fast Feast Repeat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (36 ratings)](https://appshunter.io/ios/app/fast-slow-fasting-tracker/id6749188352/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Monetization | Free | — |
| Size | 23 MB | 63 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zan Cerne](https://appshunter.io/developer/1747198932) | [Delay, Don't Deny Social Network, Inc.](https://appshunter.io/developer/1562877547) |

## What reviewers say

### Fast Slow

[App page](https://appshunter.io/ios/app/fast-slow-fasting-tracker/id6749188352)

Understand your body's metabolic changes during fasting with a visual timeline. This free app guides you through different fasting zones, from digestion to deep ketosis, and offers customizable schedules and smart notifications. It provides stats, streaks, and widgets for easy progress tracking.

**Highlights:** Fasting timer with visual timeline, 6 customizable fasting schedules, 5 distinct fasting zones explained, Smart notifications for fasting windows, Stats, streaks, and trends tracking, Home and Lock Screen widgets, Siri Shortcuts integration

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Legacy | $1.99 | per 7 days |
| Legacy - Yearly | $12.99 | per year |
| Buy Me a Coffee | $2.99 | one-time |
| You're Amazing | $9.99 | one-time |


### Fast Feast Repeat

[App page](https://appshunter.io/ios/app/fast-feast-repeat/id6754365660)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly All-Access Membership | $19.99 | per month |
| Annual All-Access Membership | $199.99 | per year |


## Frequently asked questions

### Is Fast Slow free?

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

### Is Fast Feast Repeat free?

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

### Do Fast Slow or Fast Feast Repeat have ads?

Neither Fast Slow nor Fast Feast Repeat shows ads.

### Which is updated more often, Fast Slow or Fast Feast Repeat?

Fast Slow ships an update every 2 weeks, and Fast Feast Repeat every 4 weeks. Most recently, Fast Slow was updated on October 17, 2026 and Fast Feast Repeat on October 10, 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.*