# HYDROS App vs Reef Pulses

The clearest difference is in-app purchases: HYDROS App at none against Reef Pulses's 2. Reef Pulses's advantage is update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Reef Pulses sells 2 in-app purchases, starting at $1.99 per month. HYDROS App asks for nothing beyond the download.

HYDROS App ships an update every 3 months, Reef Pulses fortnightly. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | HYDROS App | Reef Pulses |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (24 ratings)](https://appshunter.io/ios/app/hydros-app/id1455344294/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 62.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 70 MB | 31 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Coralvue](https://appshunter.io/developer/1455344293) | [Thai Nghiem](https://appshunter.io/developer/1893355007) |

## What reviewers say

### 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


### Reef Pulses

[App page](https://appshunter.io/ios/app/reef-pulses/id6762204198)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic | $1.99 | per month |
| Essential | $19.99 | per year |


## Frequently asked questions

### Is HYDROS App free?

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

### Is Reef Pulses free?

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

### Do HYDROS App or Reef Pulses have ads?

Neither HYDROS App nor Reef Pulses shows ads.

### Which is updated more often, HYDROS App or Reef Pulses?

HYDROS App ships an update every 3 months, and Reef Pulses fortnightly. Most recently, HYDROS App was updated on October 29, 2026 and Reef Pulses 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.*