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Best Thermostat App Free

231+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated July 2026

If you already know Thermometer++ App, this is the deeper bench. 231+ thermostat app free for iPhone, all reviewed and ranked by user rating, recency, and download trend as of July 2026.

Compare top Thermostat App Free (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Thermometer++ AppThermometer++ AppFree4.7★ (7.2K)YesYesAug 2026
2Thermometer - Indoor & OutdoorThermometer - Indoor & OutdoorFree4.2★ (2.6K)YesNoAug 2026
3Total Connect ComfortTotal Connect ComfortFree4.3★ (75K)NoNoAug 2026
4NestNestFree4.6★ (2.5M)NoNoAug 2026
5HD Thermometer ⊎HD Thermometer ⊎Free4.3★ (13K)YesYesAug 2026
6Thermometer-Room&Indoor TrackThermometer-Room&Indoor TrackFree4.5★ (255)YesNoJul 2026
7SensiSensiFree4.6★ (234K)YesNoAug 2026
8Resideo - Smart HomeResideo - Smart HomeFree4.6★ (571K)NoNoAug 2026

Top Picks for Thermostat App Free

Thermometer++ App#1

Thermometer++ App by Viachaslau Tysianchuk

Temperature and more
Editor's Choice
☀️ Weather
4.7😊(7.2K ratings)
FreeAdsIn-App Purchases
#78in Weather
Thermometer++ App screenshot 1
Thermometer++ App screenshot 2
Thermometer++ App screenshot 3

Transform your device into a precise thermometer. Get real-time outdoor temperature, humidity, pressure, and wind data for your current location. Utilizes AI to combine data from multiple sources for accurate, up-to-the-minute weather information.

What We Love

  • 🚀 Accurate temperature readings
  • 👍 Simple and easy to use
  • 🔍 Provides humidity information
  • 🌍 Works well in different locations

Room to Improve

  • 🐛 Inconsistent temperature readings
  • 🗺️ Inaccurate location detection
  • 🔌 Doesn't work without internet connection
Thermometer - Indoor & Outdoor#2

Thermometer - Indoor & Outdoor by Vaibhavi Bhingradiya

Room Temp Thermometer
Strong Contender
☀️ Weather
4.2(2.6K ratings)
FreeAds
#45in Weather
Thermometer - Indoor & Outdoor screenshot 1
Thermometer - Indoor & Outdoor screenshot 2
Thermometer - Indoor & Outdoor screenshot 3
Thermometer - Indoor & Outdoor screenshot 4
Thermometer - Indoor & Outdoor screenshot 5
Thermometer - Indoor & Outdoor screenshot 6

This app provides real-time temperature readings for both indoor room environments and outdoor locations worldwide. It offers detailed weather forecasts, including hourly and daily predictions, wind speed, humidity, and sunrise/sunset times. Easily monitor your home comfort or plan your travels with location-based weather information.

Total Connect Comfort#3

Total Connect Comfort by Resideo Technologies, Inc.

Worth Considering
🌟 Lifestyle
4.3😐(75K ratings)
Free
Total Connect Comfort screenshot 1
Total Connect Comfort screenshot 2
Total Connect Comfort screenshot 3
Total Connect Comfort screenshot 4

Remotely monitor and control your home's heating and cooling system from anywhere. Adjust schedules, set temperatures, and receive alerts for your connected thermostats. Offers weather forecasts and multi-location management.

What We Love

  • 🚀 Remote control
  • 🔒 Reliable connectivity
  • 👍 Easy to use
  • 👍 Convenient scheduling

Room to Improve

  • 🐛 Connectivity issues
  • 🐛 Unreliable temperature readings
  • 🐛 Inconsistent app performance

More Thermostat App Free apps to explore

4
Nest
Nest
Nest
by Nest Labs
Free

Control your smart home devices, including thermostats, security systems, cameras, and smoke detectors, all from a single app. Receive alerts, manage schedules, and automate actions based on your presence.

Remote thermostat controlArm/disarm security systemLive camera feeds
🌟 Lifestyle
(2.5M)
free with in-app purchases
5
HD Thermometer ⊎
HD Thermometer ⊎
HD Thermometer ⊎
Current temperature & more
Free

Displays the current temperature for your location using a weather service. Offers a clean, rustic interface and allows saving multiple locations. Not a true thermometer, it relies on external data for accuracy.

Current location temperature displayRustic style interfaceSave multiple locations
☀️ Weather
(13K)
free with in-app purchases
6
Thermometer-Room&Indoor Track
Thermometer-Room&Indoor Track
Thermometer-Room&Indoor Track
Smart Indoor & Outdoor Temps
Free

Monitor indoor and outdoor temperatures in real time with detailed historical data and trend charts. Track temperatures from multiple locations simultaneously and access basic environmental data and converters.

Real-time temperature trackingHistorical data and trend chartsMulti-location monitoring
🔧 Utilities
(255)
free with in-app purchases
7
Sensi
Sensi
Sensi
by Copeland LP
Free

Control your home's climate remotely with a smart thermostat. Adjust temperature, set schedules, and receive alerts from anywhere. Integrates with popular smart home platforms for seamless control.

Remote temperature control7-day schedulingUsage reports
🌟 Lifestyle
(234K)
free with in-app purchases
8
Resideo - Smart Home
Resideo - Smart Home
Resideo - Smart Home
Formerly Honeywell Home
Free

Automate your home for enhanced comfort, security, and awareness. This app simplifies control of connected devices, aiming to create a smarter, more comfortable living environment while contributing to a healthier planet.

Home comfort controlHome security managementHome awareness features
🌟 Lifestyle
(571K)
free
9
Thermometer
Thermometer
Thermometer
Temperature & More
Free

This app transforms your iPhone or iPod Touch into a thermometer, displaying the exact outside temperature based on your current location. It provides detailed local weather conditions and allows you to check temperatures for other cities.

Real-time outdoor temperature displayLocation-based temperature readingsLocal weather condition reports
🔧 Utilities
(4.2K)
free with in-app purchases
10
(S30/E30/M30) iComfort T-Stat
(S30/E30/M30) iComfort T-Stat
(S30/E30/M30) iComfort T-Stat
by Lennox Industries
Free

Control your home's HVAC system remotely with this app, allowing you to adjust temperatures, set schedules, and monitor air quality. It offers smart features like location-based temperature adjustments and advanced warnings for potential system issues.

Remote temperature adjustmentThermostat schedulingSmart Away™ Mode
🔧 Utilities
(45K)
free
11
ecobee
ecobee
ecobee
Imagine what home could be
Free

Control your smart home devices, including thermostats, cameras, and sensors. Automate your home for comfort and peace of mind, and monitor entryways and cabinets with intelligent alerts. Save energy with custom schedules and find potential rebates.

Control SmartThermostat, SmartCamera, and SmartSensorStep-by-step installation guidesCustomizable thermostat schedules
🌟 Lifestyle
(200K)
free with in-app purchases
12
Thermic Smart Thermostat Setup
Thermic Smart Thermostat Setup
Thermic Smart Thermostat Setup
Quick and easy climate control
Free

Easily manage your home's heating and cooling from anywhere. Connect smart thermostats and devices for remote temperature control, flexible scheduling, and custom scenarios. Receive alerts for temperature changes and optimize energy use for ideal indoor comfort.

Remote temperature controlFlexible schedulingHome, Away, Vacation modes
🌟 Lifestyle
(13)
free with in-app purchases
13
SmartTemp: Home Control
SmartTemp: Home Control
SmartTemp: Home Control
Design Comfort for You
Free

Effortlessly manage your home's climate from anywhere with this intuitive app. Connect your devices via HomeKit to set custom schedules, monitor individual room temperatures, and receive real-time notifications for optimal comfort and energy efficiency.

Remote temperature adjustmentHomeKit device integrationRoom-specific temperature monitoring
🔧 Utilities
(95)
free with in-app purchases
14
Google Chrome
Google Chrome
Google Chrome
Fast & Secure, by Google
Free

This web browser offers fast and secure internet access, integrating Google Search and Lens for quick information retrieval. It provides robust security features like enhanced protection and password management, and syncs your data across devices for seamless browsing.

Fast and secure browsingGoogle Search and Lens integrationEnhanced protection mode
🔧 Utilities
(3.7M)
free with in-app purchases
15
Hx™ Thermostat
Hx™ Thermostat
Hx™ Thermostat
by Bosch Thermotechnik GmbH
Free

Remotely manage your compatible smart thermostat from anywhere. Adjust temperature, fan settings, and humidity, or enable special modes like Max heat/cool. The app supports scheduling, geo-fencing, and integration with voice assistants.

Remote temperature adjustmentSchedule managementGeo-fencing
🔧 Utilities
(1.4K)
free
16
Google Home
Google Home
Google Home
Your home in your hands
Free

Manage your smart home devices and stay updated on home activity. Easily control devices with voice commands and view live camera feeds. Organize your home into custom dashboards for quick access.

Home status overviewDevice grouping into dashboardsLive camera view and history
🌟 Lifestyle
(1.3M)
ad-supported
17
My Smart Thermostat
My Smart Thermostat
My Smart Thermostat
by Yunbin Hu
Free

Control your smart thermostat remotely from your iPhone or iPad. This app allows you to manage your home's temperature from anywhere in the world, saving energy and money with its self-programming features. Enjoy convenient operation and a user-friendly interface.

Remote thermostat controlEnergy saving programmingWorldwide home management
🔧 Utilities
(78)
free
18
ClimaSmart: Thermostat Remote
ClimaSmart: Thermostat Remote
ClimaSmart: Thermostat Remote
Smart Way to Make Comfort
Free

Control your home's temperature remotely with this intuitive app. Adjust settings, create schedules, and receive alerts for unexpected changes. Compatible with leading smart thermostats for seamless climate management.

Remote temperature monitoring and adjustmentSmart Home, Away, and Vacation modesCustomizable daily and weekly schedules
🌟 Lifestyle
(3)
freemium
19
SkyportHome
SkyportHome
SkyportHome
by Daikin North America
Free

Remotely monitor and control your Daikin, Amana, and Goodman heating and cooling systems from anywhere. Manage multiple locations, adjust settings, and receive important system notifications and energy usage insights.

Remote HVAC monitoring and controlManage multiple locationsEdit thermostat schedules
🌟 Lifestyle
(28K)
free
20
Body Temperature App For Fever
Body Temperature App For Fever
Body Temperature App For Fever
Thermometer. Checker. Tracker
Free

Estimate and track body temperature trends to monitor potential fever symptoms. Log data, export reports for healthcare providers, and monitor family members' temperatures. Includes features like heart rate estimation and symptom tracking.

Estimate body temperatureLog and track temperature dataExport data to PDF
🏥 Medical
(22K)
free with in-app purchases

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FAQ about Thermostat App Free

What is the best thermostat app free for iPhone?
Thermometer++ App tops our thermostat app free ranking as of July 2026, with a 4.7-star average from 7.2K App Store ratings, and it's free to download.
Thermometer++ App shows ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 231+ thermostat app free on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
This app turns your iPhone into a fast and accurate thermometer. It provides real-time data on outdoor temperature, humidity, pressure, and wind at your current location. It uses AI to combine information from multiple weather stations for precise predictions.
Key features include displaying temperature, humidity, pressure, and wind, functioning as a thermometer, barometer, or hygrometer. You can view weather for your current location or any chosen spot on a map. It offers a minimalistic design and supports both Celsius and Fahrenheit.

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indoor thermostat app free