Pool Doctor vs PoolSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pool Doctor
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.
- 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
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Thousands of professionals across the world already use Pool Doctor to keep their pools blue... you should too! This app is not for total beginners -- It is a powerful digital tool for professionals or enthusiasts. But don't worry! Instructions are constantly scrolling across the screen. Just enter whatever chemical readings you prefer using any test kit you own, and Pool Doctor will tell you exactly what chemicals to put into your pool and why. With Pool Doctor, you can adjust the chlorine, bromine, salt, pH, total alkalinity, calcium hardness, and even the cyanuric acid levels in all of your pools. You can even configure the ideal ranges and chemicals used to treat the pools (see screenshots). Pool Doctor gives all results and explanations in pounds, ounces, grams, kilograms, liters, gallons, or even in the number of scoops (you can enter custom scoop sizes); and changing units is as easy as pressing a button! This app supports regular, salt-water, or even bromine pools. Pool Doctor now saves basic reading and treatment records for all of your pools! Pool Doctor only shows you readings that apply to your pool type, so there is no unnecessary confusion! Pool Doctor will now calculate the Langelier Index automatically if you take all of the required readings! Pool Doctor now includes a shock calculator! Just enter the free and total chlorine levels, and Pool Doctor will automatically calculate how much of your preferred shock chemical is necessary to bring your pool to breakpoint chlorination.
PoolSync
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.
- Remote equipment control
- Adjust heat pump set point
- Change sanitization level
- Create schedules
- Receive alerts
- Monitor pool status
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Effortlessly control PoolSync™ Ready equipment from your iOS device. Adjust the heat pump set point, change the sanitization level, create schedules and receive alerts when action needs to be taken. Home or away always be in sync with your pool. PoolSync Ready equipment includes: • ChlorSync™ Models CS30 CS40 & CS50 • HeatWave SuperQuiet® Heat Pumps • HeatChlor Chlorinator & Heat Pump Combo
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Pool Doctor | PoolSync |
|---|---|---|
| Price | $19.99 | Free — better |
| Rating | 4.4 (134 ratings) — better | 2.0 (68 ratings) |
| Positive reviews | 67.8% of reviews — better | 19.7% of reviews |
| Number of ratings | 134 — better | 68 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 7 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Gazzini Ventures | AquaCal AutoPilot, Inc |
Customer experience
Pool Doctor
PoolSync
User reviews
Pool Doctor
From 134 App Store ratingsWhat we love
- 👍 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)
Room to improve
- 🐛 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
PoolSync
From 68 App Store ratingsWhat we love
- 👍 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
Room to improve
- 🐛 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)
Bugs and requests
Pool Doctor
Reported bugs
9 issues- 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
Show 4 moreShow fewer
- Metric calculations don't work properly
- App requires internet connection despite being offline-capable
- Support page/links no longer available
- Inconsistent shock chemical recommendations despite selection changes
Requested features
13 requests- 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
Show 8 moreShow fewer
- Support for additional chemicals like Borax for pH adjustment
- Water temperature and wind data tracking
- Graphing and historical data visualization
- Multi-user sync for shared pool maintenance
- Pool volume estimator tool
- Support for hot tubs and spas
- Metric-only interface for non-US users
- More detailed information on calcium hardness and other parameters
PoolSync
Reported bugs
18 issues- 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
Show 13 moreShow fewer
- App disconnects from controller frequently, even when close
- App loses connection after a few weeks of use
- Unit not found after initial setup
- Update broke remote control functionality
- Scheduling functionality removed/broken after updates
- Password authentication screen is broken
- Forced update requires physical button press for authorization
- Scheduling feature removed from app
- Tiny font size, difficult to read
- Scheduling system does not work, settings disappear
- Repeatedly need to resync device after closing app
- Heater turns on with pump schedule instead of app schedule
- Location services required for app functionality
Requested features
15 requests- 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
Show 10 moreShow fewer
- Improve UI aesthetics (background color, animation, sound)
- Add solar info to the app
- Ability to add/edit equipment through the app
- Create group schedules via the app
- Usage meter for heater run time
- Dynamic Type support for text scaling
- Ability to size text
- Create two schedules (on time and off time)
- Restore scheduling function
- Add a low point for heat and high point for chiller
In-app purchases
Pool Doctor
No in-app purchases
PoolSync
No in-app purchases
Questions
Is Pool Doctor free?
Is PoolSync free?
Which has better reviews, Pool Doctor or PoolSync?
Do Pool Doctor or PoolSync have ads?
Which is updated more often, Pool Doctor or PoolSync?
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