# Simple Fasting App vs H2 flow water fasting

The clearest difference is rating: Simple Fasting App at 4.5 against H2 flow water fasting's 3.4. Simple Fasting App also leads on in-app purchases (none vs 2) and review sentiment (77% vs 50%). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. H2 flow water fasting sells 2 in-app purchases, starting at $2.99 per month. Simple Fasting App asks for nothing beyond the download.

Simple Fasting App holds the better App Store score, 4.5 against 3.4. That said, the two scores are not equally well evidenced: Simple Fasting App has 47 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 77% of Simple Fasting App's written reviews are positive against 50% of H2 flow water fasting's.

Simple Fasting App ships an update every 6 weeks, H2 flow water fasting monthly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Simple Fasting App | H2 flow water fasting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (47 ratings)](https://appshunter.io/ios/app/simple-fasting-app/id6738610803/reviews)** | [3.4 (5 ratings)](https://appshunter.io/ios/app/h2-flow-water-fasting/id6752329005/reviews) |
| Number of ratings | **47** | 5 |
| Positive reviews | **76.9% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free | Free |
| Size | 6 MB | 57 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Mehmet Emrah Konya](https://appshunter.io/developer/1752657386) | [Martijn Nelissen](https://appshunter.io/developer/1837721404) |

## What reviewers say

### Simple Fasting App

[App page](https://appshunter.io/ios/app/simple-fasting-app/id6738610803)

This app simplifies intermittent fasting with a focus on privacy and ease of use. It offers popular fasting schedules, progress tracking, and smart notifications without ads, subscriptions, or data collection.

**Highlights:** Free and private, Popular fasting schedules, Progress tracking, Smart notifications, Intuitive design, Customizable themes, Quick start

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

**In-app purchases:** none


### H2 flow water fasting

[App page](https://appshunter.io/ios/app/h2-flow-water-fasting/id6752329005)

This app guides users through water fasting with hydration tracking and mindful prompts. It offers science-based tools to support metabolic renewal and help users achieve fasting goals, from short to multi-day protocols.

**Highlights:** Hydration tracking, Mindful guidance, Science-based tools, Fasting preparation, Milestone celebration, Metabolic renewal support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| H2Flow Pro Monthly | $2.99 | per month |
| H2Flow Pro Yearly | $24.99 | per year |


## Frequently asked questions

### Is Simple Fasting App free?

Simple Fasting App is free to download, with no in-app purchases.

### Is H2 flow water fasting free?

H2 flow water fasting is free to download, with in-app purchases available.

### Which has better reviews, Simple Fasting App or H2 flow water fasting?

Simple Fasting App is rated higher. Simple Fasting App averages 4.5 out of 5 from 47 ratings, while H2 flow water fasting averages 3.4 from 5 ratings.

### Do Simple Fasting App or H2 flow water fasting have ads?

Neither Simple Fasting App nor H2 flow water fasting shows ads.

### Which is updated more often, Simple Fasting App or H2 flow water fasting?

Simple Fasting App ships an update every 6 weeks, and H2 flow water fasting monthly. Most recently, Simple Fasting App was updated on October 30, 2026 and H2 flow water fasting on October 24, 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.*