Grid Locator Finder vs Smart911
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Grid Locator Finder
This tool displays Grid Locator References on a map, useful for ham radio operators planning portable or mobile operations. It offers 6-digit and an expanded 10-digit locator system based on Wikipedia's logic.
- Tap on map for Grid Locator Reference
- Supports 6-digit and 10-digit locators
- Zoom to street level for precise location
- Convenient for portable/mobile ham radio operations
- Based on ARRL document and Wikipedia logic
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Tap anywhere on the map and app will show you Grid Locator Reference. This is convenient tool for ham radio operators to make a plan for portable and/or mobile operation as well as big DX expedition. Internet connection is required. Zoom in to street level, app will show you 10 digit locator. Note: Usually Grid Locator is 6 digit as defined in ARRL document. This 10 digit is expansion of 6 digit as 7th and 8th are divided by 10 ("0" through "9") then 9th and 10th are divided by 24 ("a" through "x"). This logic is based on article on Wikipedia. If you want to get Grid Locator Reference on your current location, please refer to my other app, "Grid Locator Calculator".
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.
Screenshots
Verdict
The clearest difference is rating: Smart911 at 4.7 against Grid Locator Finder's 2.0. Smart911 also leads on ratings volume (6.8K vs 2). Grid Locator Finder's advantage is review sentiment (67% vs 37%) and iOS requirement (10.0 vs 16). 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
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 2.0. 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 complicate that: 67% of Grid Locator Finder's written reviews are positive against 37% of Smart911's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.
| Parameter | Grid Locator Finder | Smart911 |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (2 ratings) | 4.7 (6.8K ratings) — better |
| Positive reviews | 66.7% of reviews — better | 37.1% of reviews |
| Number of ratings | 2 | 6.8K — better |
| Update frequency | Every 4 months | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 10.0 — better | 16 |
| Further details — not scored | ||
| Size | 28 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Kazunori Watanabe | Rave Mobile Safety |
Customer experience
Grid Locator Finder
Smart911
Bugs and requests
Grid Locator Finder
Not enough reviews yet to summarise bugs or 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
In-app purchases
Grid Locator Finder
No in-app purchases
Smart911
No in-app purchases
Questions
Is Grid Locator Finder free?
Is Smart911 free?
Which has better reviews, Grid Locator Finder or Smart911?
Do Grid Locator Finder or Smart911 have ads?
Which is updated more often, Grid Locator Finder or Smart911?
Other comparisons
