# Pool Shark H2O Pro vs Unitlog

The clearest difference is in-app purchases: Pool Shark H2O Pro at none against Unitlog's 2. Pool Shark H2O Pro also leads on device support and iOS requirement (12.0 vs 26.0). On price there is nothing between them.

Both are free to download. Unitlog sells 2 in-app purchases, starting at $19.99 per year. Pool Shark H2O Pro asks for nothing beyond the download.

## The numbers

| Metric | Pool Shark H2O Pro | Unitlog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (219 ratings)](https://appshunter.io/ios/app/pool-shark-h2o-pro/id1467944894/reviews)** | — |
| Number of ratings | **219** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 5 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 19 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Pool Shark H2O, Inc.](https://appshunter.io/developer/1143122519) | [Justinas Grinius](https://appshunter.io/developer/1718404088) |

## 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


### Unitlog

[App page](https://appshunter.io/ios/app/unitlog-appliance-tracker/id6759115366)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnitLog Pro | $19.99 | per year |
| UnitLog Pro – Lifetime | $69.99 | one-time |


## Frequently asked questions

### Is Pool Shark H2O Pro free?

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

### Is Unitlog free?

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

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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.*