First Alert by Resideo

First Alert by Resideo

by Resideo Technologies, Inc.

34K ratings
458 reviews
#69 in free Lifestyle
🌟 Lifestyle
Free

Details

  • Released
  • Updated
  • July 9, 2024
  • September 14, 2026

Features

Background Location Access

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About

Monitor and manage your smart home devices for comfort, safety, and water leak detection. Receive alerts whether you're home or away, and integrate with various smart home partners for comprehensive control.

Whole-home device management
Real-time alerts (home/away)
Comfort control (thermostats)
Smart smoke & CO detection
Video monitoring (doorbell/cameras)
Water leak detection & shutoff
Smart home partner integration
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What users say

See all reviews
+1

What's New in First Alert by Resideo

2.26.1

September 14, 2026

Bug Fixes.

Charts

Top Free

📉 69-6

Lifestyle

This app dropped -6 positions in Lifestyle chart.

Last updated on September 18, 2026.

User reviews

Not working

Hasn’t been working for days.
Frequently it’ll be off-line for a while, but this is getting ridiculous

Runtime, hour by hour

Having the ability to see how long my AC ran in a day is really nice. I personally would like also to see it hour by hour. Kind of like a bar graph like it is for the days but also have bars for each hour. For Example, runtime from 12PM to 1PM was 32 minutes. And so on for each hour of the day.

No humidity

It doesn’t show humidity anymore

Annoying

Tired of the darn thing constantly signing us out of the app

Very Basic

Gives you access and scheduling for the thermostat. The history of temp and humidity is not stored. There are graphs and charts but it does not save the data. Not impressed for Honeywell, a major name in home HVAC.

Developer apps

User experience

🐞

Reported Bugs

3 issues

Sign-in button not functioning

Bug

Delayed HVAC runtime data updates

Bug

Inability to add new devices

Bug

Requested Features

3 requests

Option to switch between Celsius and Fahrenheit

Feature

Improved remote sensor integration

Feature

Apple Watch and landscape mode support

Feature

FAQ

What does the First Alert by Resideo app do?

The app allows you to monitor and manage a variety of smart home devices, including video cameras, smart smoke and carbon monoxide alarms, smart thermostats, and water leak detectors. It provides whole-home coverage and alerts whether you are at home or away.

What are the key features of this app?

Key features include whole-home coverage for managing various smart devices, real-time alerts for incidents like water leaks or smoke, comfort control for smart thermostats, smart smoke and carbon monoxide detection, video monitoring, and water leak detection with optional shutoff capabilities. It also integrates with smart home partner devices.

Is the First Alert by Resideo app free to use?

The app itself is free to download and use. However, it is designed to work with specific First Alert, Resideo, and Honeywell Home branded smart devices, which are purchased separately. There may also be in-app purchases for additional features or services.

What devices are compatible with the First Alert by Resideo app?

The app is compatible with select Resideo, Honeywell Home, and First Alert branded products, including video cameras, smart smoke and carbon monoxide alarms, smart thermostats, and water leak detection devices. It also integrates with smart home partners like Schlage, Kwikset, and Genie, and can integrate with Google Nest Protect Alarms.

How can this app help prevent home damage?

The app helps prevent home damage through its water leak detection feature, which alerts you to leaks early. It also offers a Water Shutoff Device that can be professionally installed to automatically turn off your home's water supply when a leak is detected, minimizing potential water damage.