# Hydro Coach vs Oxidation Numbers

The clearest difference is in-app purchases: Oxidation Numbers at none against Hydro Coach's 2. Oxidation Numbers also leads on iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Hydro Coach sells 2 in-app purchases, starting at $4.99 per month. Oxidation Numbers asks for nothing beyond the download.

## The numbers

| Metric | Hydro Coach | Oxidation Numbers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hydro-coach-hydroponics/id6756528916/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | Freemium | — |
| Size | 145 MB | 24 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kisha Baker](https://appshunter.io/developer/1861143296) | [Shraddhaben Parmar](https://appshunter.io/developer/1889769325) |

## What reviewers say

### Hydro Coach

[App page](https://appshunter.io/ios/app/hydro-coach-hydroponics/id6756528916)

This app helps indoor growers manage their hydroponic systems with tools for tracking plant health, monitoring pH and EC levels, and calculating nutrient mixes. It offers light scheduling, smart reminders, and a grower's guide to various systems and terminology.

**Highlights:** Track active and harvested grows, Monitor plant health and stress indicators, pH and EC level monitoring, Nutrient mixing calculations, Light scheduling and reminders, Smart reminders for system maintenance, Hydroponic system guide and glossary

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hydro Coach Plus | $4.99 | per month |
| Hydro Coach Plus | $39.99 | per year |


### Oxidation Numbers

[App page](https://appshunter.io/ios/app/oxidation-numbers/id6768608241)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hydro Coach free?

Hydro Coach is free to download, with in-app purchases available.

### Is Oxidation Numbers free?

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

### Do Hydro Coach or Oxidation Numbers have ads?

Neither Hydro Coach nor Oxidation Numbers 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.*