# SDNM vs KARR Security

The clearest difference is rating: SDNM at 4.5 against KARR Security's 3.0. KARR Security's advantage is ratings volume (172 vs 6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SDNM holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: KARR Security has 172 ratings behind it against 6, so its average is the more settled of the two.

SDNM ships an update every 4 months, KARR Security every 3 months. The most recent releases landed on September 14, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | SDNM | KARR Security |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (6 ratings)](https://appshunter.io/ios/app/sdnm/id1491809687/reviews)** | [3.0 (172 ratings)](https://appshunter.io/ios/app/karr-security/id6443616063/reviews) |
| Number of ratings | 6 | **172** |
| Positive reviews | — | 44.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 30 MB | 190 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [San Diego Gas & Electric](https://appshunter.io/developer/489246333) | [WEBHOUSE SOFTWARE SOLUTIONS PTY LTD](https://appshunter.io/developer/1036168238) |

## What reviewers say

### SDNM

[App page](https://appshunter.io/ios/app/sdnm/id1491809687)

This app allows users to anonymously and securely report near misses or close calls. It collects details about incidents, potential injuries, and safety improvements, with automatic blurring of faces and offensive images for privacy. The app offers full offline support and synchronizes data when a connection is available.

**Highlights:** Anonymous reporting, Secure data collection, Image upload and commenting, Automatic image blurring (faces, offensive content), Offline support, Auto-synchronization, User feedback mechanism

**Features:** macOS Compatibility

**In-app purchases:** none


### KARR Security

[App page](https://appshunter.io/ios/app/karr-security/id6443616063)

This app enhances KARR Security systems, offering theft prevention and GPS-based vehicle recovery. It provides convenient, selectable features for seamless integration with the security products.

**Highlights:** Seamless integration with KARR Security products, Theft prevention features, GPS-based vehicle recovery, Convenient and selectable features

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Efficient tracking and notifications
- 🔒 Helpful security features
- 👍 User-friendly app interface
- 💡 Convenient vehicle management

**What reviewers complain about**

- 🐛 Connectivity and reliability issues
- 🔍 Inaccurate location tracking
- 💤 Limited remote functionality
- 🤔 Confusing setup and onboarding

**Reported bugs**

- App crashes and freezes frequently
- Notifications not working as expected
- Inconsistent connectivity with vehicle
- Incorrect vehicle location reporting

**Requested features**

- Improve remote lock/unlock capabilities
- Provide more detailed location tracking
- Add support for smartwatch integration
- Enhance customization options


## Frequently asked questions

### Is SDNM free?

SDNM is free to download, with no in-app purchases.

### Is KARR Security free?

KARR Security is free to download, with no in-app purchases.

### Which has better reviews, SDNM or KARR Security?

SDNM is rated higher. SDNM averages 4.5 out of 5 from 6 ratings, while KARR Security averages 3.0 from 172 ratings.

### Do SDNM or KARR Security have ads?

Neither SDNM nor KARR Security shows ads.

### Which is updated more often, SDNM or KARR Security?

SDNM ships an update every 4 months, and KARR Security every 3 months. Most recently, SDNM was updated on September 14, 2026 and KARR Security on September 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*