# H2 flow water fasting vs Fasting Timer & Hydration Log

The clearest difference is in-app purchases: Fasting Timer & Hydration Log at none against H2 flow water fasting's 2. On price, update cadence, ads and device support 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. Fasting Timer & Hydration Log asks for nothing beyond the download.

H2 flow water fasting ships an update monthly, Fasting Timer & Hydration Log every 5 weeks. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | H2 flow water fasting | Fasting Timer & Hydration Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/h2-flow-water-fasting/id6752329005/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free | — |
| Size | 57 MB | 5 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Martijn Nelissen](https://appshunter.io/developer/1837721404) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### 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 |


### Fasting Timer & Hydration Log

[App page](https://appshunter.io/ios/app/fasting-timer-and-hydration-log/id6772282181)

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

**In-app purchases:** none


## Frequently asked questions

### Is H2 flow water fasting free?

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

### Is Fasting Timer & Hydration Log free?

Fasting Timer & Hydration Log is free to download, with no in-app purchases.

### Do H2 flow water fasting or Fasting Timer & Hydration Log have ads?

Neither H2 flow water fasting nor Fasting Timer & Hydration Log shows ads.

### Which is updated more often, H2 flow water fasting or Fasting Timer & Hydration Log?

H2 flow water fasting ships an update monthly, and Fasting Timer & Hydration Log every 5 weeks. Most recently, H2 flow water fasting was updated on September 23, 2026 and Fasting Timer & Hydration Log on September 21, 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.*