Comparison

tempi.fi vs Comfort Sync® Thermostat

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

Head to head
About

tempi.fi

This app connects to wireless sensors to continuously monitor temperature and humidity. Receive alerts for out-of-range conditions, store historical data, and export readings in CSV format. Ideal for various environments like refrigerators, nurseries, and greenhouses.

Highlights
  • Wireless sensor connection
  • Continuous temperature/humidity monitoring
  • Out-of-range alerts
  • Historical data storage
  • CSV data export
  • Automatic sensor setup
Features
Read full description

tempi.fi's wireless temperature and humidity sensors record a new reading every minute using best-in-class Swiss made temperature and humidity sensing components, sync directly to your smart phone, fit almost anywhere, and last longer than a year on a single coin cell battery. They are ideal for monitoring refrigerators, freezers, children’s rooms, animal & pet conditions, wine cellars, greenhouses, senior living conditions, freezing pipes, art collections, cigar humidors, chicken incubation, musical instruments and more… With this app, you can connect and setup one or more sensors, continuously monitor temperature and humidity, get notifications when the temperature or humidity is out of range, store a virtually unlimited history, and export data in CSV format. How it works: • Automatically setup your sensor by holding it over your phone or tablet • Name your sensor and set your desired conditions (if any) • When in range, the app will automatically upload the sensor data • If temperature or humidity is higher or lower than desirable, you get an app notification • View historical data and create reports anytime

About

Comfort Sync® Thermostat

Control your home's HVAC system remotely with this app, designed to work with the Comfort Sync A3 thermostat. It offers intelligent features like automatic temperature adjustments based on your location and air quality monitoring for allergy relief.

Highlights
  • Remote temperature adjustment
  • Thermostat schedule editing
  • Location-based energy saving (Away Sync™)
  • True Temp™ for perceived comfort
  • Air quality and pollen monitoring (Allergy Sync™)
  • Predictive system alerts
Features
Read full description

"This app is designed to be used with the Comfort Sync A3 thermostat. The Comfort Sync® A3 thermostat doesn’t just control temperatures like a conventional thermostat, it automatically adapts to individual lifestyles and to the changing environment to help deliver precision comfort, energy savings and peace of mind. The Comfort Syc (Sync) App allows the user to control their HVAC system from anywhere in the world as though they were standing in front of their own thermostat. App Features • Adjust and view your house temperature from anywhere in the world • Edit and view your thermostat schedule • Away Sync™ uses the location on your mobile phone to detect when the house is empty and automatically change the temperature to a more energy-efficient setting. When a family member is on the way home it automatically returns the temperature to its regular setting • Much like a weather report will use a temperature and wind speed to determine a Wind Chill index to indicate the perceived temperature, the Comfort Sync True Temp™ temperature takes into account indoor and outdoor temperature and humidity to make a home feel exactly like the homeowner desires. Therefore, when the thermostat is set to 72 degrees, a home will “Feel Like” (a home's ""True Temp"" will be"") 72 degrees year-round • Allergy Sync™ on the Comfort Sync A3 gives immediate allergy relief by monitoring air quality and pollen levels outside. When high levels of pollutants and allergens are detected, the fan automatically turns on to keep the home’s air clean • The thermostat’s advanced warning system predicts problems before they happen and alerts the homeowner and your dealer if enabled • Get alerts, reminders and advanced warnings from your system wherever you are You must own a Comfort Sync A3 thermostat to use this app. The Comfort Sync A3 thermostat must also be connected to your home’s Wi-Fi router before the app can control the settings. We truly appreciate your questions and comments. Please keep sending your suggestions to consumeraffairssocial@lennoxind.com or @AskDaveLennox on Twitter *Continued use of GPS in the background can dramatically affect battery life"

Screenshots

tempi.fi4 screens
Comfort Sync® Thermostat4 screens

Verdict

The call

tempi.fi and Comfort Sync® Thermostat both sit at 4.7 stars, but that hides the real split: 93% of tempi.fi's written reviews are positive against 22% of Comfort Sync® Thermostat's. Comfort Sync® Thermostat's advantage is ratings volume (1.9K vs 22) and update cadence (every 3 months vs every 9 months). On price, rating, 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

On the App Store both sit at effectively the same score — 4.7 for tempi.fi against 4.7 for Comfort Sync® Thermostat. That said, the two scores are not equally well evidenced: Comfort Sync® Thermostat has 1.9K ratings behind it against 22, so its average is the more settled of the two. Written reviews are what separate them: 93% of tempi.fi's written reviews are positive against 22% of Comfort Sync® Thermostat's.

UpkeepUpdate frequency

tempi.fi ships an update every 9 months, Comfort Sync® Thermostat every 3 months. Both last shipped on November 3, 2026.

Scorecard3 real differences · 7 level
tempi.fi versus Comfort Sync® Thermostat: the parameters behind the verdict, then further details
Parametertempi.fiComfort Sync® Thermostat
PriceFreeFree
Rating4.7 (22 ratings)4.7 (1.9K ratings) — better
Positive reviews92.9% of reviews — better21.6% of reviews
Number of ratings221.9K — better
Update frequencyEvery 9 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size22 MB116 MB
Age rating4+4+
DeveloperVITALNOMAD LLCAllied Air Enterprises inc.

Customer experience

tempi.fi

All ratings19 ratings
Positive94.7%
Neutral0.0%
Negative5.3%
Written reviews14 reviews
Positive92.9%
Neutral0.0%
Negative7.1%

Comfort Sync® Thermostat

All ratings1,880 ratings
Positive93.1%
Neutral2.2%
Negative4.7%
Written reviews51 reviews
Positive21.6%
Neutral9.8%
Negative68.6%

Bugs and requests

tempi.fi

Not enough reviews yet to summarise bugs or requests.

Comfort Sync® Thermostat

Reported bugs

2 issues
  • App can't log in or sync with system
  • Lack of reliable customer support

Requested features

4 requests
  • Show percentage of current fan speed
  • Ability to set hourly temperature schedules
  • Integration with Apple HomeKit
  • More control over fan operation

In-app purchases

None

tempi.fi

No in-app purchases

None

Comfort Sync® Thermostat

No in-app purchases

Questions

Is tempi.fi free?
tempi.fi is free to download, with no in-app purchases.
Is Comfort Sync® Thermostat free?
Comfort Sync® Thermostat is free to download, with no in-app purchases.
Which has better reviews, tempi.fi or Comfort Sync® Thermostat?
Comfort Sync® Thermostat is rated higher. tempi.fi averages 4.7 out of 5 from 22 ratings, while Comfort Sync® Thermostat averages 4.7 from 1.9K ratings.
Do tempi.fi or Comfort Sync® Thermostat have ads?
Neither tempi.fi nor Comfort Sync® Thermostat shows ads.
Which is updated more often, tempi.fi or Comfort Sync® Thermostat?
tempi.fi ships an update every 9 months, and Comfort Sync® Thermostat every 3 months. Most recently, tempi.fi was updated on November 3, 2026 and Comfort Sync® Thermostat on November 3, 2026.

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