# FastFlow vs FastFlow

The clearest difference is device support: FastFlow at 3 against FastFlow's 1. FastFlow also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. FastFlow sells 3 in-app purchases, starting at $1.99 per 7 days and FastFlow sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

FastFlow ships an update weekly, FastFlow every 5 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | FastFlow | FastFlow |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 44 MB | 11 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lit Games Publishing LTD](https://appshunter.io/developer/1565278669) | [浩铭 顾](https://appshunter.io/developer/1873844063) |

## What reviewers say

### FastFlow

[App page](https://appshunter.io/ios/app/fastflow-fasting-and-water-app/id6760019921)

This app combines intermittent fasting, AI calorie counting, and water tracking to help users lose weight and stay hydrated. It features an AI coach for personalized guidance and progress tracking tools.

**Highlights:** AI calorie counter with photo tracking, Smart intermittent fasting timer, Water intake tracking and reminders, AI fasting coach for personalized advice, Progress tracking with streaks and graphs, Multiple fasting protocols

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastFlow Weekly Premium | $1.99 | per 7 days |
| FastFlow Premium — Monthly Sub | $4.99 | per month |
| FastFlow Premium — Yearly Sub | $29.99 | per year |


### 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 |


## Frequently asked questions

### Is FastFlow free?

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

### Is FastFlow free?

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

### Do FastFlow or FastFlow have ads?

Both FastFlow and FastFlow show ads.

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

FastFlow ships an update weekly, and FastFlow every 5 days. Most recently, FastFlow was updated on October 25, 2026 and FastFlow on October 25, 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.*