# HYDROS App vs Precision Dosing

The clearest difference is rating: Precision Dosing at 5.0 against HYDROS App's 3.7. HYDROS App's advantage is update cadence (every 3 months vs every 44 months) and ratings volume (22 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Precision Dosing holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: HYDROS App has 22 ratings behind it against 1, so its average is the more settled of the two.

HYDROS App ships an update every 3 months, Precision Dosing every 44 months. The most recent releases landed on September 26, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | HYDROS App | Precision Dosing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (22 ratings)](https://appshunter.io/ios/app/hydros-app/id1455344294/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/precision-dosing/id1587344204/reviews)** |
| Number of ratings | **22** | 1 |
| Positive reviews | 62.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 44 months |
| Monetization | Free | Free |
| Size | 70 MB | 5 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Coralvue](https://appshunter.io/developer/1455344293) | [华 李](https://appshunter.io/developer/1051208751) |

## 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


### Precision Dosing

[App page](https://appshunter.io/ios/app/precision-dosing/id1587344204)

Automate nutrient delivery for equipment with precise control. This application simplifies the process of adding nutrients, significantly reducing feeding complexity.

**Highlights:** Precision dosing control, Automated nutrient addition, Equipment integration, Reduced feeding difficulty, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HYDROS App free?

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

### Is Precision Dosing free?

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

### Which has better reviews, HYDROS App or Precision Dosing?

Precision Dosing is rated higher. HYDROS App averages 3.7 out of 5 from 22 ratings, while Precision Dosing averages 5.0 from 1 ratings.

### Do HYDROS App or Precision Dosing have ads?

Neither HYDROS App nor Precision Dosing shows ads.

### Which is updated more often, HYDROS App or Precision Dosing?

HYDROS App ships an update every 3 months, and Precision Dosing every 44 months. Most recently, HYDROS App was updated on September 26, 2026 and Precision Dosing on June 8, 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.*