# FastFlow vs Metabo

The clearest difference is iOS requirement: FastFlow at 15.1 against Metabo's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. FastFlow sells 2 in-app purchases, starting at $2.99 per month and Metabo sells 5 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

FastFlow ships an update every 2 days, Metabo every 3 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | FastFlow | Metabo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Size | 35 MB | 15 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Uprise iX LLC](https://appshunter.io/developer/1809234369) | [Arif OZELCI](https://appshunter.io/developer/1768734602) |

## What reviewers say

### FastFlow

[App page](https://appshunter.io/ios/app/fastflow-intermittent-fasting/id6758635076)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Weekly Subscription | $8.99 | per 7 days |


### Metabo

[App page](https://appshunter.io/ios/app/metabo-fasting-timer-168/id6778807199)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $5.99 | per 7 days |
| Premium Monthly | $7.99 | per month |
| Premium 3 Months | $19.99 | per 3 months |
| Metabo Premium Yearly | $49.99 | per year |
| Premium Yearly | $49.99 | per year |


## Frequently asked questions

### Is FastFlow free?

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

### Is Metabo free?

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

### Do FastFlow or Metabo have ads?

Neither FastFlow nor Metabo shows ads.

### Which is updated more often, FastFlow or Metabo?

FastFlow ships an update every 2 days, and Metabo every 3 days. Most recently, FastFlow was updated on October 25, 2026 and Metabo on October 28, 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.*