# Hydro vs EwePro

The clearest difference is update cadence: EwePro at daily against Hydro's monthly. EwePro also leads on iOS requirement (13.0 vs 26.0). 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.

Hydro ships an update monthly, EwePro daily. The most recent releases landed on September 22, 2026 and July 31, 2026 respectively.

## The numbers

| Metric | Hydro | EwePro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Size | 7 MB | 21 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Patrick](https://appshunter.io/developer/385768716) | [Rocco De Francesco](https://appshunter.io/developer/987493724) |

## What reviewers say

### Hydro

[App page](https://appshunter.io/ios/app/hydro-aquatic-data-hub/id6477622181)

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

**In-app purchases:** none


### EwePro

[App page](https://appshunter.io/ios/app/ewepro/id6786588857)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hydro free?

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

### Is EwePro free?

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

### Do Hydro or EwePro have ads?

Neither Hydro nor EwePro shows ads.

### Which is updated more often, Hydro or EwePro?

Hydro ships an update monthly, and EwePro daily. Most recently, Hydro was updated on September 22, 2026 and EwePro on July 31, 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.*