# HydroFlow vs YDUN

The clearest difference is iOS requirement: YDUN at 15.0 against HydroFlow's 17.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | HydroFlow | YDUN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 1 MB | 20 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Hrishi Shah](https://appshunter.io/developer/1778741358) | [Ydun SRL](https://appshunter.io/developer/6780828839) |

## What reviewers say

### HydroFlow

[App page](https://appshunter.io/ios/app/hydroflow-water-tracking-app/id6754469362)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases:** none


### YDUN

[App page](https://appshunter.io/ios/app/ydun/id6780828837)

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

**In-app purchases:** none


## Frequently asked questions

### Is HydroFlow free?

HydroFlow is free to download, with no in-app purchases.

### Is YDUN free?

YDUN is free to download, with no in-app purchases.

### Do HydroFlow or YDUN have ads?

Neither HydroFlow nor YDUN shows ads.

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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.*