# FastFlow vs Fastwell

The clearest difference is ads: Fastwell at none against FastFlow's shown. Fastwell also leads on device support (3 vs 1). FastFlow's advantage is update cadence (every 5 days vs monthly). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. FastFlow sells 2 in-app purchases, starting at $0.99 per month and Fastwell sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

FastFlow ships an update every 5 days, Fastwell monthly. The most recent releases landed on June 4, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | FastFlow | Fastwell |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Monthly |
| Size | 11 MB | 16 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [浩铭 顾](https://appshunter.io/developer/1873844063) | [Vadim Semenko](https://appshunter.io/developer/1539136864) |

## What reviewers say

### FastFlow

[App page](https://appshunter.io/ios/app/fastflow-fasting-timer/id6760942083)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastFlow Pro Monthly | $0.99 | per month |
| FastFlow Pro Yearly | $9.99 | per year |


### Fastwell

[App page](https://appshunter.io/ios/app/fastwell-intermittent-fasting/id6789995014)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Yearly | $19.99 | per year |


## Frequently asked questions

### Is FastFlow free?

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

### Is Fastwell free?

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

### Do FastFlow or Fastwell have ads?

FastFlow shows ads; Fastwell does not.

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

FastFlow ships an update every 5 days, and Fastwell monthly. Most recently, FastFlow was updated on June 4, 2026 and Fastwell on September 9, 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.*