# PoolSync vs Master Clear Salt System

The clearest difference is update cadence: Master Clear Salt System at every 3 weeks against PoolSync's every 2 months. 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.

PoolSync ships an update every 2 months, Master Clear Salt System every 3 weeks. Both last shipped on September 29, 2026.

## The numbers

| Metric | PoolSync | Master Clear Salt System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (64 ratings)](https://appshunter.io/ios/app/poolsync/id1498848116/reviews)** | — |
| Number of ratings | **64** | — |
| Positive reviews | 19.7% of reviews | **25.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 39 MB | 62 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AquaCal AutoPilot, Inc](https://appshunter.io/developer/1498848115) | [Master Spas](https://appshunter.io/developer/574204539) |

## What reviewers say

### PoolSync

[App page](https://appshunter.io/ios/app/poolsync/id1498848116)

Control your pool equipment remotely from your iOS device. Adjust settings like temperature and sanitization, create schedules, and receive important alerts. Stay connected to your pool's status whether you're at home or away.

**Highlights:** Remote equipment control, Adjust heat pump set point, Change sanitization level, Create schedules, Receive alerts, Monitor pool status

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Controls pool features remotely
- 👍 Can monitor chlorinator and heat pump
- 👍 App improved over time (recent positive)
- 👍 Easy to set up (recent positive)
- 👍 Controls pumps, heater, valves, spa, lights

**What reviewers complain about**

- 🐛 Frequent disconnection issues
- 🐛 "Unit does not appear online" error
- 🐛 Basic functionality, minimal details
- 🐛 Poor customer service/no response
- 🐛 Wi-Fi password issues (spaces not allowed)

**Reported bugs**

- Connection issues: "cloud connected" but "unit does not appear online"
- Wi-Fi connection fails even when close to router
- App gets stuck in setup mode, doesn't find heater/chiller (Error 1012)
- Cannot input spaces in Wi-Fi password
- Bug in verification screen preventing code input

**Requested features**

- Add temperature history graph
- Add notifications for heater issues
- Integrate relay contacts for heating priority
- Allow spaces in Wi-Fi passwords
- Add Alexa, Google, HomeKit, IFTTT integration


### Master Clear Salt System

[App page](https://appshunter.io/ios/app/master-clear-salt-system/id6738960674)

Monitor and control your spa's water chemistry remotely. Adjust settings, check salt levels, and manage chlorine cycles to ensure optimal water quality with minimal effort.

**Highlights:** Monitor salt level, Adjust chlorine sensor sensitivity, Manually override chlorine cycle, Check Smart Cell life, Remote control and monitoring

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PoolSync free?

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

### Is Master Clear Salt System free?

Master Clear Salt System is free to download, with no in-app purchases.

### Do PoolSync or Master Clear Salt System have ads?

Neither PoolSync nor Master Clear Salt System shows ads.

### Which is updated more often, PoolSync or Master Clear Salt System?

PoolSync ships an update every 2 months, and Master Clear Salt System every 3 weeks. Most recently, PoolSync was updated on September 29, 2026 and Master Clear Salt System on September 29, 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.*