Smart911 vs HTZSAFE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Smart911
Enhance emergency preparedness by creating a Safety Profile to share vital household information with 9-1-1. Receive targeted emergency alerts for weather, traffic, and public safety events.
- Create Safety Profiles
- Share household information with 9-1-1
- Receive emergency alerts
- Customize notification types
- View medical and contact details
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Be better prepared for any emergency with Smart911. By signing up, you can share lifesaving information about your household with 9-1-1 and receive targeted emergency alerts. When you call 9-1-1, your Smart911 Safety Profile displays on the 9-1-1 screen. The 9-1-1 call takers can view your addresses, medical information, home information, pets and vehicles, and emergency contacts. You can provide as much or as little information as you like. This additional information enables 9-1-1 and first responders to send help fast. Smart911 can also keep you informed of weather, traffic, and other emergencies by sending emergency alerts from the National Weather Service and local public safety agencies. You can select the types of notifications you want and how you want to be notified. Smart911: Information worth sharing. Sign up today.
HTZSAFE
This app allows you to set up and remotely control a smart DIY security system for your home or business. Receive instant alarm notifications and manage detectors, arm/disarm schedules, and event logs from anywhere.
- Remote system control
- Instant alarm notifications
- Scheduled arm/disarm
- Add/delete detectors
- Detector type setting
- Event log tracking
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HTZSAFE focus on developing and manufacturing the more professional and more practical smart DIY security system to secure your home and business from burglars,fires, leaks, floods and SOS. The APP: - Set up your security system in minutes. - Get alarm notifications and remote control the system at anywhere and anytime. - Setting the timing time to arm/disarm the system. - Add/Delete the detector and key fob - Setting the type of the detectors such as burglar/burglar(24 hours)/fire/gas/water/help. - Follow the log of events HTZSAFE Security System Includes : Network Hub Series : HTZSAFE Hub has different network modes ( LAN / WiFi / 4G ), we have own servers in United States and Europe to ensure the stability of the system and the better customer experience. No monthly fees and contracts required to run the system. Solar&Battery Motion Detector Series: The wireless weather resistant motion detectors can be used to monitor&protect your outdoor/indoor property. Such as driveway, front porch, gate,pool,garage,shed and etc. Great for home, business,and office.The sensor will work properly at all the seasons. Working temperature range from -30 to 150 degree Fahrenheit. Solar Beam Sensors Series: The infrared sensing terminals of the solar beam sensors can be mounted up to 100 meters apart,and will send a wireless signal back to the wireless alarm receiver up to 1KM away anytime the intruder passes between the sensors;the solar sensor is powered by built-in lithium ion batteries those are recharged through the solar panels during the day, requires no wiring and easy to install.It is the ideal for all types of outdoor intrusion alarm application,such as driveway/fence tops/windows/etc. Other Wireless Accessories: Solar&Battery Smoke Detector, Gas Detector, Solar&Battery Door/Window Detector, Water Detector , Solar Siren , Panic Buttons, Wireless Signal Repeater and etc. Learn more about HTZSAFE: www.htzsafe.com If you have any questions, contact us at support@htzsafe.com
Screenshots
Verdict
The clearest difference is rating: Smart911 at 4.7 against HTZSAFE's 3.0. Smart911 also leads on review sentiment (37% vs 0%) and ratings volume (6.8K vs 2). HTZSAFE's advantage is update cadence (every 6 days vs every 4 months). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Smart911 holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Smart911 has 6.8K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 37% of Smart911's written reviews are positive against 0% of HTZSAFE's.
Smart911 ships an update every 4 months, HTZSAFE every 6 days. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | Smart911 | HTZSAFE |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (6.8K ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 36.6% of reviews — better | 0.0% of reviews |
| Number of ratings | 6.8K — better | 2 |
| Update frequency | Every 4 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 16 | 15.6 — better |
| Further details — not scored | ||
| Size | 26 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Rave Mobile Safety | 宇宏 王 |
Customer experience
Smart911
HTZSAFE
Bugs and requests
Smart911
Reported bugs
4 issues- Unable to confirm phone number and get verification code
- Keeps signing users out and unable to log back in
- Incorrect address formatting and inability to update location
- Delayed or missing emergency alerts and notifications
Requested features
4 requests- Ability to adjust pin location on map
- Option to select specific areas for alerts
- Improved notification settings and customization
- Support for apartment/building entry details
HTZSAFE
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Smart911
No in-app purchases
HTZSAFE
No in-app purchases









