Comparison

iAquaLink vs ThermoLinx

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iAquaLink

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
Read full description

Pool Control in the Palm of your Hand With iAquaLink, you can monitor and control a full range of industry-leading swimming pool equipment anytime, anywhere. iAquaLink offers the ultimate in intelligent pool control from a mobile device - empowering pool owners and professionals to create the perfect pool experience on-site or on-the-go. SUPPORTED EQUIPMENT AquaLink TCX | Pool or Spa Automation Quick, Easy Smart Pool Upgrade:: • Schedule and operate Jandy or Pentair VS Pumps
 • Heat your Pool or Spa with Gas Heat, Heat Pump, and Solar Heat
 • Easily automate lights with wireless switch support
 • Smart communication with Saltwater Chlorinators
 • Feature Circuits for simple water feature setup
 • Use Bluetooth for full setup and operation when Internet is unavailable
 AquaLink RS, PDA, Z4 | Pool & Spa Automation Anytime, Anywhere Control: • Heat up your Spa, adjust sanitizer generation, even manage multiple pools
 • Control up to 32 pool/spa features including lights, waterfalls, and jets
 • Set the mood automatically with OneTouch Scene selection
 iQPUMP01 | Variable-Speed Pump Control Optimize Pump Operation: • Set custom pump speeds
 • Set custom schedules
 • Monitor power usage
 ALPHA, VRX, EPIC, Evo and 9 series | Robotic Pool Cleaner On demand Cleaning: • Wi-Fi connectivity – control from anywhere, at any time
 • Cleaning modes selection
 • Remote control mode*
 • Easy Lift removal system*
 *Features vary by model Z400iQ, Z550iQ | Connected Heat Pump Optimized Temperature Control: • Air and water temperature monitoring
 • Set custom temperatures for heating and cooling
 • Mode Selection
 eXO iQ / Hydroxinator iQ / Duo iQ | Salt Water Chlorinator
All-in-one water quality control: • Automatic maintenance of water balance (with optional pH Link or Dual Link modules)
 • Control of the filtration pump (single speed or Zodiac variable speed)
 • Control of heating system
 • Control of pool lights (white or Zodiac color Led)
 • Hydroxinator iQ model delivers magnesium-based water treatment for an unparalleled bathing experience

About

ThermoLinx

Remotely control and monitor your HBX Wi-Fi zoning, snow melt, and geothermal systems. Manage comfort, energy savings, and system status from your smartphone or tablet.

Highlights
  • Remote control of Wi-Fi zoning systems
  • Monitor snow melt systems
  • Control geothermal systems
  • Adjust heating and cooling modes
  • Receive alarm notifications
  • Manage up to 20 zones
Features
Read full description

ThermoLinx Hydronic Network The ThermoLinx Hydronic Network mobile app allows you to remotely control and monitor your HBX Wi-Fi zoning, snow melt, and geothermal system from the palm of your hand. Wi-Fi Zoning System The Wi-Fi Zoning System offers the highest degree of comfort management, allowing you to control up to 20 zones remotely to maximize comfort and energy savings. The system incorporates multiple heating and cooling modes, DHW, and selectable priorities to accommodate for small to large systems. Unique to hydronics, each zone control provides outputs for forced air delivery systems. Each zone can be viewed and configured from smartphone or tablet devices, allowing you control your comfort anytime, anyplace. You must own an HBX ZON-0550 (zone control), THM-0300/THM-0500 (Thermostat) and TMX-0100 ThermoLinxTM Wi-Fi module to use the HBX Wi-Fi Zoning App. Snow Melt System Control The SNO-0550 Version 2.0+ is the latest control to be added to the ThermoLinx Hydronic Network with the ability to set snow fall rates, adjust/monitor targets, set slab demands and the ability to turn on/off your snow melt system anytime, anywhere. Geothermal System Control Introducing the simplest, most intuitive control available to the geothermal industry: the ECO-0550, now with the ThermoLinx Hydronic Network, allowing you to control your geothermal system remotely with built-in Wi-Fi control. No TMX-0100 module required. With the ThermoLinx mobile app, users can control their geothermal system remotely from there smartphone or tablet devices with the ability to adjust heat pump and backup heat source parameters, monitor tank temperatures, equipment operation status and receive alarm notifications.

Screenshots

iAquaLink4 screens
ThermoLinx4 screens

Verdict

The call

The clearest difference is rating: iAquaLink at 4.7 against ThermoLinx's 1.7. iAquaLink also leads on ratings volume (101K vs 7). ThermoLinx's advantage is monetization model (free vs free with in-app purchases) and review sentiment (44% vs 28%). On price, 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

iAquaLink holds the better App Store score, 4.7 against 1.7. That said, the two scores are not equally well evidenced: iAquaLink has 101K ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 28% of iAquaLink's written reviews are positive against 44% of ThermoLinx's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

iAquaLink ships an update every 2 months, ThermoLinx every 6 weeks. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
iAquaLink versus ThermoLinx: the parameters behind the verdict, then further details
ParameteriAquaLinkThermoLinx
PriceFreeFree
Rating4.7 (101K ratings) — better1.7 (7 ratings)
Positive reviews28.3% of reviews44.4% of reviews — better
Number of ratings101K — better7
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.210.3 — better
Further details — not scored
Size41 MB20 MB
Age rating4+4+
DeveloperZodiac Pool Systems, Inc.HBX Controls Inc

Customer experience

iAquaLink

All ratings100,051 ratings
Positive93.0%
Neutral2.4%
Negative4.6%
Written reviews605 reviews
Positive28.3%
Neutral12.1%
Negative59.7%

ThermoLinx

All ratings7 ratings
Positive14.3%
Neutral0.0%
Negative85.7%
Written reviews9 reviews
Positive44.4%
Neutral11.1%
Negative44.4%

Bugs and requests

iAquaLink

Reported bugs

4 issues
  • 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

4 requests
  • 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

ThermoLinx

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

iAquaLink

No in-app purchases

None

ThermoLinx

No in-app purchases

Questions

Is iAquaLink free?
iAquaLink is free to download, with no in-app purchases.
Is ThermoLinx free?
ThermoLinx is free to download, with no in-app purchases.
Which has better reviews, iAquaLink or ThermoLinx?
iAquaLink is rated higher. iAquaLink averages 4.7 out of 5 from 101K ratings, while ThermoLinx averages 1.7 from 7 ratings.
Do iAquaLink or ThermoLinx have ads?
Neither iAquaLink nor ThermoLinx shows ads.
Which is updated more often, iAquaLink or ThermoLinx?
iAquaLink ships an update every 2 months, and ThermoLinx every 6 weeks. Most recently, iAquaLink was updated on November 1, 2026 and ThermoLinx on October 24, 2026.

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