# ReefKinetics Cloud Controller vs HYDROS App

ReefKinetics Cloud Controller and HYDROS App both sit at 3.4 stars, but that hides the real split: 62% of HYDROS App's written reviews are positive against 0% of ReefKinetics Cloud Controller's. HYDROS App also leads on ratings volume (24 vs 5). ReefKinetics Cloud Controller's advantage is update cadence (monthly vs every 3 months) and iOS requirement (12.0 vs 15.6). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.4 for ReefKinetics Cloud Controller against 3.5 for HYDROS App. Both are backed by a comparable volume of ratings — 5 and 24 respectively. Written reviews are what separate them: 0% of ReefKinetics Cloud Controller's written reviews are positive against 62% of HYDROS App's.

ReefKinetics Cloud Controller ships an update monthly, HYDROS App every 3 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | ReefKinetics Cloud Controller | HYDROS App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/reefkinetics-cloud-controller/id1198187251/reviews) | **[3.5 (24 ratings)](https://appshunter.io/ios/app/hydros-app/id1455344294/reviews)** |
| Number of ratings | 5 | **24** |
| Positive reviews | 0.0% of reviews | **62.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | Free |
| Size | 33 MB | 70 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Reef Kinetics sal](https://appshunter.io/developer/1470372899) | [Coralvue](https://appshunter.io/developer/1455344293) |

## What reviewers say

### ReefKinetics Cloud Controller

[App page](https://appshunter.io/ios/app/reefkinetics-cloud-controller/id1198187251)

This app simplifies aquarium maintenance for both experienced and new reef enthusiasts. It assists with complex environments and makes the hobby less intimidating. The associated device helps run tests and fix potential issues.

**Highlights:** Assists advanced reefers, Simplifies hobby for new enthusiasts, Runs reagent-based tests, Runs probe-based tests, Helps fix potential issues

**Features:** macOS Compatibility

**In-app purchases:** none


### HYDROS App

[App page](https://appshunter.io/ios/app/hydros-app/id1455344294)

Easily monitor and control your aquarium's vital parameters like temperature, pH, and salinity. Manage all your connected devices, including ATOs, lights, and pumps, with a user-friendly interface. Quick setup with preset configurations means no coding is required to get your system running.

**Highlights:** Monitor temperature, ORP, pH, salinity, Control ATO, lights, heaters, pumps, User-friendly interface, Quick setup with presets, Manage multiple devices and aquariums, Set schedules and create modes

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

**In-app purchases:** none


## Frequently asked questions

### Is ReefKinetics Cloud Controller free?

ReefKinetics Cloud Controller is free to download, with no in-app purchases.

### Is HYDROS App free?

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

### Which has better reviews, ReefKinetics Cloud Controller or HYDROS App?

HYDROS App is rated higher. ReefKinetics Cloud Controller averages 3.4 out of 5 from 5 ratings, while HYDROS App averages 3.5 from 24 ratings.

### Do ReefKinetics Cloud Controller or HYDROS App have ads?

Neither ReefKinetics Cloud Controller nor HYDROS App shows ads.

### Which is updated more often, ReefKinetics Cloud Controller or HYDROS App?

ReefKinetics Cloud Controller ships an update monthly, and HYDROS App every 3 months. Most recently, ReefKinetics Cloud Controller was updated on October 24, 2026 and HYDROS App on October 29, 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.*