# Pool Shark H2O Pro vs Poolsure Mobile

The clearest difference is rating: Pool Shark H2O Pro at 4.8 against Poolsure Mobile's 4.2. Pool Shark H2O Pro also leads on ratings volume (288 vs 5) and iOS requirement (12.0 vs 15.0). Poolsure Mobile's advantage is update cadence (weekly vs every 5 months) and monetization model (free vs free with in-app purchases). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

Pool Shark H2O Pro holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Pool Shark H2O Pro has 288 ratings behind it against 5, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Pool Shark H2O Pro ships an update every 5 months, Poolsure Mobile weekly. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Pool Shark H2O Pro | Poolsure Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (288 ratings)](https://appshunter.io/ios/app/pool-shark-h2o-pro/id1467944894/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/poolsure-mobile/id1545322311/reviews) |
| Number of ratings | **288** | 5 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 4 MB | 167 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pool Shark H2O, Inc.](https://appshunter.io/developer/1143122519) | [Poolsure, a division of Aquasol Controllers, Inc.](https://appshunter.io/developer/1545322313) |

## What reviewers say

### Pool Shark H2O Pro

[App page](https://appshunter.io/ios/app/pool-shark-h2o-pro/id1467944894)

This app simplifies pool and spa record-keeping and maintenance with compliant logs. It offers instant water analysis and chemical dosage instructions to reduce liability and maintain clean water.

**Highlights:** Health Department Compliant Logs, Instant Water Analysis, Chemical Dosage Instructions, Bluetooth Integration with LaMotte WaterLink Spin Touch, Automated Testing Reminders, Location-Based Pool Search, Tamper-Proof Electronic Logs

**In-app purchases:** none


### Poolsure Mobile

[App page](https://appshunter.io/ios/app/poolsure-mobile/id1545322311)

This app helps pool owners track their pool's chemical levels and provides calculations for saturation index and chemical recommendations. It simplifies pool maintenance by eliminating manual calculations and offering insights into pool health.

**Highlights:** Daily pool log entries, Saturation index calculation, Chemical dosage recommendations, View chemical readings, Sync with Spin Touch, View active alerts

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Pool Shark H2O Pro free?

Pool Shark H2O Pro is free to download, with no in-app purchases.

### Is Poolsure Mobile free?

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

### Which has better reviews, Pool Shark H2O Pro or Poolsure Mobile?

Pool Shark H2O Pro is rated higher. Pool Shark H2O Pro averages 4.8 out of 5 from 288 ratings, while Poolsure Mobile averages 4.2 from 5 ratings.

### Do Pool Shark H2O Pro or Poolsure Mobile have ads?

Neither Pool Shark H2O Pro nor Poolsure Mobile shows ads.

### Which is updated more often, Pool Shark H2O Pro or Poolsure Mobile?

Pool Shark H2O Pro ships an update every 5 months, and Poolsure Mobile weekly. Most recently, Pool Shark H2O Pro was updated on November 6, 2026 and Poolsure Mobile on November 7, 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.*