Loner Mobile vs SDNM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Loner Mobile
This app monitors the safety of lone workers by tracking their location and status. It features an SOS alert, a check-in timer, and can detect if a worker is incapacitated. Alerts are sent to a live monitoring team in case of an emergency.
- SOS alert with silent option
- Configurable check-in timer
- Man down detection
- Location tracking (GPS/Wi-Fi)
- Works with Bluetooth accessories
- GDPR compliant data control
Read full descriptionHide full description
Loner Mobile is a lone worker safety monitoring app for iPhone. Compliant with GDPR, all data remains under the control of your organization and not shared with third parties. Blackline currently monitors 60,000+ employees in 50+ countries around the world. HOW IT WORKS Businesses use Loner Mobile to monitor the safety of employees who work beyond sight and sound of others. Free to download on iOS. Each Loner Mobile app is registered with an organization-level Blackline Live account and requires a service plan (see Get Started section). HIGHLY CONFIGURABLE Loner Mobile is highly configurable and monitors worker safety through a check-in timer, no-motion (man down) detection and works with several Bluetooth accessories that provide wearable access to a physical SOS button. Loner Mobile runs in the background and connects to the Blackline Safety Cloud, reporting safety status and location information. Should an emergency occur, Loner Mobile triggers an alert to a live monitoring team to direct help to the employee’s location. Live monitoring team options include supervisors, a control room, central monitoring station or Blackline’s 24/7 in-house Safety Operations Center / Alarm Receiving Center partner. LONE WORKER FEATURES Customizable for a broad range of scenarios, Loner Mobile is configured from the Blackline Safety Cloud. - Works with iPhone, iPad - Works with Wi-Fi and cellular connectivity - Call for help using the SOS alert slider (incl. silent SOS option) - Use optional Bluetooth accessories for a physical SOS button - Confirm your safety using the configurable check-in timer - Use automatic check-in when driving (configurable speed) - Location technology includes Wi-Fi and GPS (configurable reporting interval) - Notify supervisors of an alert through SMS and email ENTERPRISE-GRADE CLOUD SOFTWARE Blackline Live is accessible from any internet-connected device and includes configuration management, emergency response management, data analytics and industrial tools. - User access controls for tight data control and privacy (GDPR compliant) - Configure Loner Mobile apps in real-time, wirelessly / over-the-air - Configuration profiles update every device simultaneously and consistently - Emergency response management using world-leading online tools - Custom, fully documented emergency response protocols - Alert profiles ensure that every alert is managed and escalated to the correct contacts - Optional 24/7 live monitoring by Blackline’s in-house Safety Operations Center or Alarm Receiving Centre partners - Blackline’s SOC responds are alerts in less than a minute 99% of the time - Every alert is fully documented for reporting SERVICE PLANS Loner Mobile is free to download but must be activated within an organization account in Blackline’s cloud-hosted safety monitoring software. Loner Mobile requires a service plan and purchase of a software license. Service plans include Blackline Safety Cloud data storage, Loner Mobile configuration management, emergency response management and data analytics. Live 24/7 Blackline monitoring services are optional. GET STARTED Contact Blackline Safety to request an activation code. North American and international: support@blacklinesafety.com, +1 403 451 0327 United Kingdom and Europe: eusupport@blacklinesafety.com, +44 1787 222684
SDNM
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.
- Anonymous reporting
- Secure data collection
- Image upload and commenting
- Automatic image blurring (faces, offensive content)
- Offline support
- Auto-synchronization
- User feedback mechanism
Read full descriptionHide full description
Anonymously and securely report near misses/close calls with the SDNM app. - Collect information about what happened - Collect information about potential injuries and/or damage to equipment - Collect information about potential improvements to safety - Upload and comment on images - App automatically blurs offensive and/or violent images - App automatically blurs all faces in uploaded images for anonymity - Submissions are anonymous by default - Full offline support and auto-synchronization of data and images when a connection is available - Integration with device email to submit questions about the app - User feedback mechanism to rate and comment on the app - New Near Miss submissions send an email to the Safety Operations team with all data, and secure links to scrubbed images
Screenshots
Verdict
The clearest difference is rating: SDNM at 4.5 against Loner Mobile's 3.0. SDNM also leads on ratings volume (6 vs 2). 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.
SDNM holds the better App Store score, 4.5 against 3.0. Both are backed by a comparable volume of ratings — 2 and 6 respectively.
Loner Mobile ships an update every 3 months, SDNM every 4 months. The most recent releases landed on July 23, 2026 and September 14, 2026 respectively.
| Parameter | Loner Mobile | SDNM |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 4.5 (6 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 2 | 6 — better |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 48 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Blackline Safety Corp | San Diego Gas & Electric |
Customer experience
Loner Mobile
SDNM
In-app purchases
Loner Mobile
No in-app purchases
SDNM
No in-app purchases
