Best Room Thermostat Apps

247+ iOS apps curated and reviewed

3.9 avg rating
20 free apps
Updated October 2026

Whether you're new to room thermostat or looking for an upgrade, our curated collection of 247+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Room Thermostat Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1HD Thermometer ⊎HD Thermometer ⊎Free4.3★ (13K)YesYesNov 2026
2SensiSensiFree4.6★ (247K)NoNoNov 2026
3Indoor ThermometerIndoor ThermometerFree4.2★ (2.9K)YesNoOct 2026
4ThermostatThermostatFree—NoNoMay 2026
5Room Temperature & ThermometerRoom Temperature & ThermometerFree3.9★ (10)YesYesOct 2026
6Hi ThermostatHi ThermostatFree—NoNoMay 2026
7Thermic Smart Thermostat SetupThermic Smart Thermostat SetupFree4.8★ (15)NoYesOct 2026
8NestNestFree4.6★ (2.6M)NoNoNov 2026

Top Picks for Room Thermostat

HD Thermometer ⊎#1

HD Thermometer ⊎ by Christophe Pereira

Indoor & Outdoor Temperature
Editor's Choice
☀️ Weather
4.3😐(13K ratings)
FreeAdsIn-App Purchases
#77in Weather
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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.

What We Love

  • ✅ Accurate
  • 🚀 Simple and reliable
  • 💻 Convenient for checking temperatures
  • 🌍 Provides temperatures for multiple locations

Room to Improve

  • 🚫 Does not measure indoor/room temperature
  • 🤔 Relies on weather data rather than direct measurement
  • 💰 Paid version required to remove ads
  • 📍 Inaccurate location detection
Sensi#2

Sensi by Copeland LP

Strong Contender
🌟 Lifestyle
4.6😊(247K ratings)
Free
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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.

What We Love

  • 🚀 Fantastic remote control
  • 🔥 Great functionality
  • 👍 Easy installation
  • 💰 Good value
  • ⏱️ Helpful usage tracking
  • 🔌 No extra fees

Room to Improve

  • 🔌 Frequent disconnections
  • 🐛 Inconsistent performance
  • 📱 Unintuitive app interface
  • 🌐 Lacks international support
  • 🌡️ Inaccurate humidity readings
Indoor Thermometer#3

Indoor Thermometer by Ravibhai Ramani

Indoor temp, outfit & tips
Worth Considering
☀️ Weather
4.2(2.9K ratings)
FreeAds
#27in Weather
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This app provides accurate indoor temperature readings in Celsius and Fahrenheit, along with outdoor weather context. It offers outfit suggestions, seasonal lifestyle tips, and the ability to create and share custom temperature cards with themed wallpapers.

More Room Thermostat apps to explore

FAQ about Room Thermostat

What are the best room thermostat apps for iPhone?
HD Thermometer ⊎ tops our room thermostat apps ranking as of October 2026, with a 4.3-star average from 13K App Store ratings, and it's free to download.
Yes — 20 of the top room thermostat apps we rank are free to download, including HD Thermometer ⊎ and Sensi.
HD Thermometer ⊎ shows ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 247+ room thermostat apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.