Comparison

Onelink Home by First Alert vs Flame Detector

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

Head to head
About

Onelink Home by First Alert

Manage and monitor your connected home devices, including smart smoke and carbon monoxide alarms. Receive emergency notifications and enjoy premium audio and voice commands with integrated smart assistants.

Highlights
  • Device installation and pairing
  • Real-time monitoring
  • Smoke and CO emergency notifications
  • Integrated Amazon Alexa
  • Premium audio speaker
  • Hands-free voice commands
Read full description

Download the Onelink Home app to install, pair, and monitor all of your Onelink by First Alert connected home devices. Now featuring the Onelink Safe & Sound, the 3-in-1 device that combines a hardwired smart smoke and carbon monoxide alarm with a premium speaker and embedded Amazon Alexa voice assistant. With safety notifications in the event of a smoke or CO emergency, plus premium audio and hands-free voice commands, the Safe & Sound adds safety, entertainment, and convenience to any home. The Onelink Home app also supports Onelink Smoke & Carbon Monoxide alarms, providing smart safety and comfort to your home.

About

Flame Detector

This app offers advanced flame detection for your home, alerting you to fires hundreds of times faster than traditional smoke alarms. It's designed for spaces where flames should never be, providing instant notifications to your smart device.

Highlights
  • Detects flame hundreds of times faster than smoke alarms
  • Instant alerts to smart devices
  • Monitors spaces where flames should not exist
  • Designed for bedrooms, playrooms, and garages
  • Provides real-time fire notifications
Read full description

Welcome to a whole new level of fire protection like you’ve never seen before. Developed by a leading-edge team of scientists and fire detection engineers, The Flame Detector is the only product of its kind on the market today. Designed to detect flame, it can detect many home fires hundreds of times faster than traditional smoke alarms. Detect flame in seconds, alerting you to fire much faster and helping prevent fire from ever getting out of hand in the first place. How does a Flame Detector compare to a smoke alarm? Smoke alarms work by detecting small particles of combustion (smoke) that must travel into the smoke alarm’s sensing chamber before ever alarming. Depending on the location of the fire to the proximity of the smoke alarm, it can take tens of minutes before a smoke alarm is activated. The Flame Detector, on the other hand, constantly monitors for the presence of flame in your home, and the moment it detects unwanted fire, you’re notified. It’s that simple! The Flame Detector is beautifully designed to monitor spaces where a flame should never exist, like a child’s bedroom, playroom or even your garage. Thousands of home fires are started by children every year, and more than half of those fires originate in the bedroom. With a Flame Detector, the moment a child lights a match a loud alarm is produced and a push notification is sent to your smart device telling you exactly where the fire started. When dealing with fire, seconds truly count! With the Flame Detector, you can be made aware of flame instantaneously, preventing dangerous home fires from ever occurring.

Screenshots

Onelink Home by First Alert4 screens
Flame Detector4 screens

Verdict

The call

The clearest difference is review sentiment: Flame Detector at 100% against Onelink Home by First Alert's 9%. Flame Detector also leads on rating (5.0 vs 1.5). Onelink Home by First Alert's advantage is ratings volume (306 vs 4) and iOS requirement (10.0 vs 12.0). On price, update cadence, 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

Flame Detector holds the better App Store score, 5.0 against 1.5. That said, the two scores are not equally well evidenced: Onelink Home by First Alert has 306 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 9% of Onelink Home by First Alert's written reviews are positive against 100% of Flame Detector's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Onelink Home by First Alert versus Flame Detector: the parameters behind the verdict, then further details
ParameterOnelink Home by First AlertFlame Detector
PriceFreeFree
Rating1.5 (306 ratings)5.0 (4 ratings) — better
Positive reviews9.2% of reviews100.0% of reviews — better
Number of ratings306 — better4
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better12.0
Further details — not scored
Size241 MB20 MB
Age rating4+4+
DeveloperFirst Alert / BRK BrandsForge Technologies, Inc (NC)

Customer experience

Onelink Home by First Alert

All ratings295 ratings
Positive9.2%
Neutral3.7%
Negative87.1%
Written reviews142 reviews
Positive9.2%
Neutral4.9%
Negative85.9%

Flame Detector

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Onelink Home by First Alert

Reported bugs

4 issues
  • App fails to recognize existing accounts
  • Devices disappear from app and HomeKit
  • Alarms going off for no reason
  • Inability to silence alarms remotely

Requested features

4 requests
  • Ability to disable Alexa/Google Home integration
  • Improved firmware update process
  • More customization options for nightlight and alarm settings
  • Better app performance and stability

Flame Detector

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Onelink Home by First Alert

No in-app purchases

None

Flame Detector

No in-app purchases

Questions

Is Onelink Home by First Alert free?
Onelink Home by First Alert is free to download, with no in-app purchases.
Is Flame Detector free?
Flame Detector is free to download, with no in-app purchases.
Which has better reviews, Onelink Home by First Alert or Flame Detector?
Flame Detector is rated higher. Onelink Home by First Alert averages 1.5 out of 5 from 306 ratings, while Flame Detector averages 5.0 from 4 ratings.
Do Onelink Home by First Alert or Flame Detector have ads?
Neither Onelink Home by First Alert nor Flame Detector shows ads.
Which is updated more often, Onelink Home by First Alert or Flame Detector?
Onelink Home by First Alert ships an update every 3 months, and Flame Detector every 3 months. Most recently, Onelink Home by First Alert was updated on November 2, 2026 and Flame Detector on November 3, 2026.

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