# Pool Doctor vs PoolSync

The clearest difference is review sentiment: Pool Doctor at 68% against PoolSync's 20%. Pool Doctor also leads on rating (4.4 vs 2.0) and iOS requirement (11.0 vs 15.1). PoolSync's advantage is price (Free vs $19.99). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

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

Pool Doctor holds the better App Store score, 4.4 against 2.0. Both are backed by a comparable volume of ratings — 134 and 68 respectively. Written reviews point the same way: 68% of Pool Doctor's written reviews are positive against 20% of PoolSync's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Pool Doctor | PoolSync |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[4.4 (134 ratings)](https://appshunter.io/ios/app/pool-doctor/id375459618/reviews)** | [2.0 (68 ratings)](https://appshunter.io/ios/app/poolsync/id1498848116/reviews) |
| Number of ratings | **134** | 68 |
| Positive reviews | **67.8% of reviews** | 19.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | **Free** |
| Size | 7 MB | 39 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gazzini Ventures](https://appshunter.io/developer/1503581197) | [AquaCal AutoPilot, Inc](https://appshunter.io/developer/1498848115) |

## What reviewers say

### Pool Doctor

[App page](https://appshunter.io/ios/app/pool-doctor/id375459618)

This powerful digital tool helps pool professionals and enthusiasts maintain their pools. Input your chemical readings, and it will provide precise instructions on what chemicals to add and why, supporting various pool types and units of measurement.

**Highlights:** Chemical level adjustment (chlorine, pH, alkalinity, etc.), Supports regular, salt-water, and bromine pools, Multiple unit of measurement options, Customizable ideal ranges and chemicals, Saves reading and treatment records, Langelier Index calculation, Shock calculator

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and intuitive interface
- 🎯 Accurate chemical calculations and recommendations
- 💡 Customizable pool parameters and chemical selection
- 📊 Helpful for pool maintenance beginners
- 🔄 Multiple unit conversions (lbs, oz, kg, metric)

**What reviewers complain about**

- 🐛 App crashes frequently
- ❌ Email functionality doesn't work
- ⚠️ Inaccurate recommendations for some pool types
- 🔧 Settings don't persist or sync across devices
- 💸 Price increased from free to $20

**Reported bugs**

- App crashes after entering readings
- Phone keyboard won't close, preventing navigation
- Entered values change automatically (pH decreases, chlorine increases)
- Chemical settings don't save or remember user preferences
- Recommendations ignore user-specified chemical concentrations

**Requested features**

- Customizable input field order to match test kit order
- Support for Baquacil pool products
- Cyanuric acid reading support
- Ability to select specific chemical types (liquid vs powdered chlorine)
- Salt level adjustment based on salt water generator (SWG) ranges


### 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


## Frequently asked questions

### Is Pool Doctor free?

Pool Doctor costs $19.99, with no in-app purchases.

### Is PoolSync free?

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

### Which has better reviews, Pool Doctor or PoolSync?

Pool Doctor is rated higher. Pool Doctor averages 4.4 out of 5 from 134 ratings, while PoolSync averages 2.0 from 68 ratings.

### Do Pool Doctor or PoolSync have ads?

Neither Pool Doctor nor PoolSync shows ads.

### Which is updated more often, Pool Doctor or PoolSync?

Pool Doctor ships an update every 2 months, and PoolSync every 2 months. Most recently, Pool Doctor was updated on November 6, 2026 and PoolSync 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.*