# H2OCHK vs PoolChem Tracker

The clearest difference is review sentiment: PoolChem Tracker at 100% against H2OCHK's 0%. PoolChem Tracker also leads on rating (4.5 vs 1.0) and ads (none vs shown). H2OCHK's advantage is in-app purchases (none vs 1) and iOS requirement (12.2 vs 26.4). On price and device support there is nothing between them.

Both are free to download. PoolChem Tracker sells 1 one-off in-app purchase. H2OCHK asks for nothing beyond the download.

PoolChem Tracker holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews point the same way: 0% of H2OCHK's written reviews are positive against 100% of PoolChem Tracker's.

H2OCHK ships an update monthly, PoolChem Tracker every 5 days. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | H2OCHK | PoolChem Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/h2ochk/id1159162921/reviews) | **[4.5 (6 ratings)](https://appshunter.io/ios/app/poolchem-tracker/id6762652630/reviews)** |
| Number of ratings | 2 | **6** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | **Ad-supported** | Freemium |
| Size | 40 MB | 12 MB |
| Requires iOS | **12.2** | 26.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Digital Concepts of Missouri, Inc.](https://appshunter.io/developer/1159162920) | [Jeffrey Thompson](https://appshunter.io/developer/1894944456) |

## 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


### PoolChem Tracker

[App page](https://appshunter.io/ios/app/poolchem-tracker/id6762652630)

This app provides precise pool chemical dosing recommendations based on your test results and pool size. It calculates a health score for your water and offers a prioritized action list to maintain balance. Works offline with no account required.

**Highlights:** Precise dosing recommendations, Pool Health Score (0-100), Prioritized action list, CYA-adjusted chlorine targets, LSI calculator, Chemical inventory tracking, Offline functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PoolChem Pro | $4.99 | one-time |


## Frequently asked questions

### Is H2OCHK free?

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

### Is PoolChem Tracker free?

PoolChem Tracker is free to download, with in-app purchases available.

### Which has better reviews, H2OCHK or PoolChem Tracker?

PoolChem Tracker is rated higher. H2OCHK averages 1.0 out of 5 from 2 ratings, while PoolChem Tracker averages 4.5 from 6 ratings.

### Do H2OCHK or PoolChem Tracker have ads?

H2OCHK shows ads; PoolChem Tracker does not.

### Which is updated more often, H2OCHK or PoolChem Tracker?

H2OCHK ships an update monthly, and PoolChem Tracker every 5 days. Most recently, H2OCHK was updated on October 7, 2026 and PoolChem Tracker on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*