# Oklyn vs Hydrapool

The clearest difference is review sentiment: Oklyn at 100% against Hydrapool's 0%. Oklyn also leads on iOS requirement (11.0 vs 15.0). Hydrapool's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Oklyn ships an update every 2 months, Hydrapool every 3 weeks. The most recent releases landed on June 1, 2026 and August 22, 2026 respectively.

## The numbers

| Metric | Oklyn | Hydrapool |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 27 MB | 151 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tuxtla SAS](https://appshunter.io/developer/1679953492) | [ACIS (AQUA CONSULT INDUSTRIE SERVICES)](https://appshunter.io/developer/1436593941) |

## What reviewers say

### Oklyn

[App page](https://appshunter.io/ios/app/oklyn/id1364957029)

This app connects to a smart pool device to monitor water quality, optimize filtration, and automate pool maintenance. It allows remote control of pool equipment and provides real-time data and historical analysis for efficient pool care.

**Highlights:** Water quality analysis (pH, RedOx, Temp), Filtration optimization, Automated active winterization, Maintenance advice, Remote pool equipment control, Leak detection in technical room

**Features:** macOS Compatibility

**In-app purchases:** none


### Hydrapool

[App page](https://appshunter.io/ios/app/hydrapool/id1436593942)

Remotely control and automate your swimming pool's equipment from anywhere. This app provides 360° monitoring and customizable alerts for both professionals and individuals, ensuring your pool is managed efficiently and intuitively.

**Highlights:** Remote pool equipment control, Automation and programming, Customizable alerts, 360° pool monitoring, Compatibility with all brands, Configurable interface

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Oklyn free?

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

### Is Hydrapool free?

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

### Do Oklyn or Hydrapool have ads?

Neither Oklyn nor Hydrapool shows ads.

### Which is updated more often, Oklyn or Hydrapool?

Oklyn ships an update every 2 months, and Hydrapool every 3 weeks. Most recently, Oklyn was updated on June 1, 2026 and Hydrapool on August 22, 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.*