# H2OCHK vs Helix Pro

The clearest difference is ads: Helix Pro at none against H2OCHK's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | H2OCHK | Helix Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/h2ochk/id1159162921/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | — |
| Monetization | Ad-supported | — |
| Size | 40 MB | 123 MB |
| Requires iOS | 12.2 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Digital Concepts of Missouri, Inc.](https://appshunter.io/developer/1159162920) | [Amcrest](https://appshunter.io/developer/930807300) |

## What reviewers say

### H2OCHK

[App page](https://appshunter.io/ios/app/h2ochk/id1159162921)

This application transforms your smart device into a water chemistry analyzer. It simplifies water maintenance by calculating precise chemical dosages for pools and hot tubs based on your setup and current chemicals.

**Highlights:** Smart device integration, Automated chemical dosage calculation, Pool and hot tub water analysis, Chemical product recommendations, Dosing sequence guidance

**In-app purchases:** none


### Helix Pro

[App page](https://appshunter.io/ios/app/helix-pro/id6529524530)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is H2OCHK free?

H2OCHK is free to download, with no in-app purchases.

### Is Helix Pro free?

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

### Do H2OCHK or Helix Pro have ads?

H2OCHK shows ads; Helix Pro does not.

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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.*