Comparison

O3 Alarm vs SmartAlarmsPro

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

Head to head
About

O3 Alarm

This security system app provides 360° protection for homes and small businesses. It allows remote monitoring, control of sensors, and customizable alerts for intrusions, floods, smoke, or gas. Manage your system, set routines, and receive notifications for enhanced safety and convenience.

Highlights
  • 360° protection with up to 50 wireless sensors
  • Intrusion, flood, smoke, and gas detection alerts
  • Customizable entry and exit delays
  • Adjustable siren duration and volume (up to 95 dB)
  • Smartphone, remote control, and panel interaction
  • RFID tag management and SMS notifications
  • Supports multiple users and smartphones
Read full description

Another signature system design from award-winning Chuango Security Technology Corporation, the O3 comes with world-class aesthetics and German-style precision craftsmanship. Chuango O3 is your 21st century security guard in disguise, made for wireless DIY comfort and convenience, and is particularly suitable for residential and small commercial applications. All you need is a Chuango O3 set and a regular SIM card. What your wire-free Chuango O3 can do for your home or small shop/SOHO: [360° Protection] Ideal for DIY home/shop improvement projects, the O3 can accommodate up to 50 wireless sensors and accessories, which can be easily “mounted” on walls or door/window frames with double-sided stickers. You will be the first to know – via this App – upon detection of intrusion, flood, smoke or gas. [360° Convenience] You can set exit and entry delays as you wish, so you and your family can go out and come back home at your own pace, without having to fumble around in your pocket for your mobile phone or remote control, to arm or disarm your Chuango O3. Pre-set routines can be entered so that your O3 will automatically guard your small shop or welcome you home right on the dot. Specific delays for specific zones are also possible. [360° Deterrence] Siren duration and volume can be adjusted per your need, with the maximum volume at 95 decibels. [360° Interaction] You can manage and interact with your O3 on your smartphone App, via your remote control, or directly on the panel. It can also double as a house phone to make or receive calls. [360° Sweet Home] The RFID tags can be renamed at will, and when used to disarm your O3 system, you immediately get an SMS text notification of who just came home. Multiple users and smartphones can be enabled to control and interact with one single O3 system once paired. You can take turns watching over your property and loved ones back home. Download your free Chuango O3 App and activate your smart and secure home now!

About

SmartAlarmsPro

Read full description

SmartAlarmPro is a professional and powerful management and control terminal for intelligent alarm devices. It can set up and disengage the alarm system, configure alarm devices and accessories, and receive real-time alarm notifications, allowing users to obtain safety information in the first time.

Screenshots

O3 Alarm4 screens
SmartAlarmsPro4 screens

Verdict

The call

The clearest difference is update cadence: SmartAlarmsPro at fortnightly against O3 Alarm's every 7 months. O3 Alarm's advantage is iOS requirement (7.0 vs 15). 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

O3 Alarm ships an update every 7 months, SmartAlarmsPro fortnightly. The most recent releases landed on November 11, 2026 and November 12, 2026 respectively.

Scorecard2 real differences · 8 level
O3 Alarm versus SmartAlarmsPro: the parameters behind the verdict, then further details
ParameterO3 AlarmSmartAlarmsPro
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 7 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS7.0 — better15
Further details — not scored
Size71 MB201 MB
Age rating4+4+
DeveloperChuango Security Technology Corporation瑞发 李

In-app purchases

None

O3 Alarm

No in-app purchases

None

SmartAlarmsPro

No in-app purchases

Questions

Is O3 Alarm free?
O3 Alarm is free to download, with no in-app purchases.
Is SmartAlarmsPro free?
SmartAlarmsPro is free to download, with no in-app purchases.
Do O3 Alarm or SmartAlarmsPro have ads?
Neither O3 Alarm nor SmartAlarmsPro shows ads.
Which is updated more often, O3 Alarm or SmartAlarmsPro?
O3 Alarm ships an update every 7 months, and SmartAlarmsPro fortnightly. Most recently, O3 Alarm was updated on November 11, 2026 and SmartAlarmsPro on November 12, 2026.

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