Best Free Indoor Thermostat Apps

250+ iOS apps curated and reviewed

3.8 avg rating
20 free apps
Updated November 2026

From beginner-friendly picks to power-user tools, our free indoor thermostat list covers 250+ iPhone apps updated through November 2026. Compare ratings, prices, and screenshots in one place.

Compare top Free Indoor Thermostat Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Total Connect ComfortTotal Connect ComfortFree4.3★ (76K)NoNoNov 2026
2SensiSensiFree4.6★ (248K)NoNoNov 2026
3NestNestFree4.6★ (2.6M)NoNoNov 2026
4HD Thermometer ⊎HD Thermometer ⊎Free4.3★ (13K)YesYesNov 2026
5Thermometer - Indoor & OutdoorThermometer - Indoor & OutdoorFree4.2★ (3.4K)YesNoNov 2026
6Indoor ThermometerIndoor ThermometerFree4.2★ (3K)YesNoNov 2026
7Thermometer: Digital Room TempThermometer: Digital Room TempFree3.8★ (80)NoYesNov 2026
8Temperature in Room +Temperature in Room +Free3.7★ (118)NoYesNov 2026

Top Picks for Free Indoor Thermostat

4.3😐(76K ratings)
Free
Total Connect Comfort screenshot 1
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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
  • 👍 Useful reports
  • 👍 Integrates with smart home

Room to Improve

  • 🐛 Connectivity issues
  • 🐛 Unreliable temperature readings
  • 🐛 Inconsistent app performance
  • 🔋 Frequent power cycling
  • 👎 Limited customization options
  • 👎 Poor customer support
Sensi#2

Sensi by Copeland LP

Strong Contender
🌟 Lifestyle
4.6😊(248K 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
Nest#3

Nest by Nest Labs

Worth Considering
🌟 Lifestyle
4.6😞(2.6M ratings)
Free
#72in Lifestyle
Nest screenshot 1
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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.

What We Love

  • 🚀 Easy to use
  • 🔒 Reliable security features
  • 📽️ Good video quality
  • 🔔 Useful alerts and notifications
  • 🌐 Convenient remote access

Room to Improve

  • 🐛 Frequent connectivity issues
  • ⏱️ Slow app performance
  • 🔒 Overly complex setup and login process
  • 💰 Expensive subscription required for full functionality
  • 🔋 Battery life issues with cameras

More Free Indoor Thermostat apps to explore

FAQ about Free Indoor Thermostat

What are the best free indoor thermostat apps for iPhone?
Total Connect Comfort tops our free indoor thermostat apps ranking as of November 2026, with a 4.3-star average from 76K App Store ratings, and it's free to download.
Total Connect Comfort has no ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 250+ free indoor thermostat apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.