# iAquaLink vs Flex

The clearest difference is rating: iAquaLink at 4.7 against Flex's 3.0. iAquaLink also leads on ratings volume (100K vs 4). Flex's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (9.3 vs 13.2). On price, update cadence, 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.

iAquaLink holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: iAquaLink has 100K ratings behind it against 4, so its average is the more settled of the two.

iAquaLink ships an update every 2 months, Flex every 6 weeks. The most recent releases landed on October 19, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | iAquaLink | Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (100K ratings)](https://appshunter.io/ios/app/iaqualink/id443059509/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/flex-link-s2/id1437594609/reviews) |
| Number of ratings | **100K** | 4 |
| Positive reviews | 28.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 41 MB | 21 MB |
| Requires iOS | 13.2 | **9.3** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zodiac Pool Systems, Inc.](https://appshunter.io/developer/443059512) | [LinkCom Manufacturing Co., Ltd.](https://appshunter.io/developer/1287465139) |

## What reviewers say

### iAquaLink

[App page](https://appshunter.io/ios/app/iaqualink/id443059509)

Control and monitor your swimming pool equipment remotely from your mobile device. Adjust settings like pump speed, temperature, and lighting, and automate cleaning schedules. Offers comprehensive management for various pool systems and accessories.

**Highlights:** Remote pool equipment monitoring and control, Schedule and operate pumps, Control pool and spa heating, Automate pool lighting, Manage saltwater chlorinators, On-demand robotic pool cleaner control, Temperature monitoring and adjustment

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to control pool and spa remotely
- 👍 Convenient for monitoring pool status
- 💡 Good integration with Alexa
- 🔒 Reliable connectivity when hardwired

**What reviewers complain about**

- 🐛 Frequent connectivity issues and app crashes
- 👎 Limited functionality in the app compared to web interface
- 💤 Slow response times and laggy performance
- 🤯 Confusing and outdated user interface

**Reported bugs**

- App freezes and loses connection to pool equipment
- Inability to re-add previously connected devices
- Unreliable firmware updates causing issues
- Inconsistent display of pool status and settings

**Requested features**

- Customizable dashboard and one-touch controls
- Notifications for pool events (e.g., robot full, temperature reached)
- Improved scheduling and automation options
- Better integration with smart home platforms


### Flex

[App page](https://appshunter.io/ios/app/flex-link-s2/id1437594609)

This application allows you to customize the colors and hues of your lighting system. Enhance any environment with a spectrum of bold colors, warm tones, and custom shades, bringing your creative vision to life.

**Highlights:** Control lighting colors, Customize hues and tones, Enhance lighting environments, Creative color application

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iAquaLink free?

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

### Is Flex free?

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

### Which has better reviews, iAquaLink or Flex?

iAquaLink is rated higher. iAquaLink averages 4.7 out of 5 from 100K ratings, while Flex averages 3.0 from 4 ratings.

### Do iAquaLink or Flex have ads?

Neither iAquaLink nor Flex shows ads.

### Which is updated more often, iAquaLink or Flex?

iAquaLink ships an update every 2 months, and Flex every 6 weeks. Most recently, iAquaLink was updated on October 19, 2026 and Flex on October 2, 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.*