# QoFast vs HYDRA.IO

The clearest difference is update cadence: QoFast at every 6 days against HYDRA.IO's fortnightly. QoFast also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. QoFast sells 3 in-app purchases, starting at $2.99 per 7 days and HYDRA.IO sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

QoFast ships an update every 6 days, HYDRA.IO fortnightly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | QoFast | HYDRA.IO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Size | 75 MB | 25 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Qorinx OU](https://appshunter.io/developer/1554751147) | [Clement Dupre](https://appshunter.io/developer/1887211457) |

## What reviewers say

### QoFast

[App page](https://appshunter.io/ios/app/qofast-intermittent-fasting/id6761296844)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QoFast Pro | $2.99 | per 7 days |
| QoFast Pro | $9.99 | per month |
| QoFast Pro | $49.99 | per year |


### HYDRA.IO

[App page](https://appshunter.io/ios/app/hydraio/id6790794354)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HYDRA Pro | $3.99 | per month |


## Frequently asked questions

### Is QoFast free?

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

### Is HYDRA.IO free?

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

### Do QoFast or HYDRA.IO have ads?

Neither QoFast nor HYDRA.IO shows ads.

### Which is updated more often, QoFast or HYDRA.IO?

QoFast ships an update every 6 days, and HYDRA.IO fortnightly. Most recently, QoFast was updated on October 28, 2026 and HYDRA.IO 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.*