# Pool Shark H2O Pro vs Pooldash

The clearest difference is price: Pool Shark H2O Pro at Free against Pooldash's $19.99. Pool Shark H2O Pro also leads on review sentiment (100% vs 67%) and ratings volume (288 vs 11). Pooldash's advantage is update cadence (fortnightly vs every 5 months). On rating, ads, in-app purchases and device support there is nothing between them.

Pool Shark H2O Pro is free to download; Pooldash costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.8 for Pool Shark H2O Pro against 4.6 for Pooldash. That said, the two scores are not equally well evidenced: Pool Shark H2O Pro has 288 ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 100% of Pool Shark H2O Pro's written reviews are positive against 67% of Pooldash's.

Pool Shark H2O Pro ships an update every 5 months, Pooldash fortnightly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Pool Shark H2O Pro | Pooldash |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | **[4.8 (288 ratings)](https://appshunter.io/ios/app/pool-shark-h2o-pro/id1467944894/reviews)** | [4.6 (11 ratings)](https://appshunter.io/ios/app/pooldash/id1505607801/reviews) |
| Number of ratings | **288** | 11 |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 4 MB | 17 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Pool Shark H2O, Inc.](https://appshunter.io/developer/1143122519) | [Gazzini Ventures](https://appshunter.io/developer/1503581197) |

## 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


### Pooldash

[App page](https://appshunter.io/ios/app/pooldash/id1505607801)

This app helps pool professionals and beginners calculate and manage pool water chemistry. It provides precise chemical adjustments based on your test kit readings and allows for custom formula sharing. Supports various pool types and offers flexible unit conversions.

**Highlights:** Chemical reading input, Precise chemical adjustment calculations, Custom formula sharing system, Adjustable chlorine, bromine, salt, pH, alkalinity, hardness, and cyanuric acid, Flexible unit conversions (pounds, ounces, grams, liters, gallons, scoops), Support for various pool types (chlorine, salt, bromine), Save, email, and export water chemistry history

**Features:** macOS Compatibility, 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 Pooldash free?

Pooldash costs $19.99, with no in-app purchases.

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

Pool Shark H2O Pro is rated higher. Pool Shark H2O Pro averages 4.8 out of 5 from 288 ratings, while Pooldash averages 4.6 from 11 ratings.

### Do Pool Shark H2O Pro or Pooldash have ads?

Neither Pool Shark H2O Pro nor Pooldash shows ads.

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

Pool Shark H2O Pro ships an update every 5 months, and Pooldash fortnightly. Most recently, Pool Shark H2O Pro was updated on November 6, 2026 and Pooldash on November 3, 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.*