Comparison

King Sound vs Smart Firelog

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

Head to head
About

King Sound

Features
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KingSound motion sensor speaker adopts mature pyroelectric human body induction technology, built-in Wi-Fi module, and uses mobile APP to operate. It can choose to play different voice content according to different places and different time periods, easy to install and easy to operate. Widely used in Government, exhibition halls, supermarkets, stations, airports and other places. Features * Motion sensor can be accurately recognized when a person passes by, and play sound. * Support external trigger control, timing play, interval time play. * MP3 audio format playback, beautiful sound quality. * Support Wi-Fi connection, use the mobile APP to set the timing, easy to operate. * 1 ~ 50 sets of timing data can be set. * Voice update is convenient, you can automatically update the voice files by U disk. * Built-in flash memory, the duration of voice playback can be customized according to customer needs. * Can set the loop playback function. * With clock display function, the current time will be automatically updated after connecting the phone.

About

Smart Firelog

Features
Read full description

Smart Firelog helps you manage fire safety systems efficiently and in real time. Key Features: • Scan NFC tags to instantly identify devices • Track inspections and maintenance history • Monitor fire panels, emergency lights, and safety equipment • View device status and fault reports • Organize buildings and locations • Stay compliant with safety checks and logs Designed for technicians and facility managers who need a fast and reliable fire safety management tool. Simple. Fast. Reliable.

Screenshots

King Sound4 screens
Smart Firelog3 screens

Verdict

The call

The clearest difference is update cadence: Smart Firelog at daily against King Sound's every 22 months. King Sound's advantage is iOS requirement (9.0 vs 17.0). On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

King Sound ships an update every 22 months, Smart Firelog daily. The most recent releases landed on September 8, 2026 and May 16, 2026 respectively.

Scorecard2 real differences · 4 level
King Sound versus Smart Firelog: the parameters behind the verdict, then further details
ParameterKing SoundSmart Firelog
PriceFreeFree
Update frequencyEvery 22 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better17.0
Further details — not scored
Size19 MB6 MB
Age rating4+4+
DeveloperWaytronic Electronics Company Limitedmonitored247

In-app purchases

None

King Sound

No in-app purchases

None

Smart Firelog

No in-app purchases

Questions

Is King Sound free?
King Sound is free to download, with no in-app purchases.
Is Smart Firelog free?
Smart Firelog is free to download, with no in-app purchases.
Do King Sound or Smart Firelog have ads?
Neither King Sound nor Smart Firelog shows ads.
Which is updated more often, King Sound or Smart Firelog?
King Sound ships an update every 22 months, and Smart Firelog daily. Most recently, King Sound was updated on September 8, 2026 and Smart Firelog on May 16, 2026.

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