SafetyLine vs CrowdMag
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SafetyLine
This app enhances lone worker safety with features like check-ins, fall detection, and GPS tracking. It provides real-time monitoring for administrators and can integrate with satellite devices for remote areas. It ensures compliance with safety regulations and offers peace of mind.
- Lone worker safety
- Check-ins and alerts
- Fall detection
- GPS tracking
- Panic button
- Satellite device integration
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SafetyLine is a cloud-based solution designed to enhance the safety of lone workers who may be at risk due to the solitary nature of their jobs or the remote locations in which they work. It offers a comprehensive suite of features including check-ins, fall detection, no-motion alerts, GPS tracking, and a panic button, all accessible through a smartphone app. Additionally, SafetyLine can integrate with satellite devices like Globalstar SPOT and Garmin inReach for areas with limited cell reception. The platform also allows for easy management and tracking of worker status by monitors and administrators, ensuring compliance with lone worker regulations and providing peace of mind for both employers and employees. To find out more, visit our website at http://www.SafetyLineLoneWorker.com, or call us at 1-888-975-2563. *SafetyLine requires an active SafetyLine subscription. **Continued use of GPS running in the background can decrease battery life.
CrowdMag
This app allows users to measure and contribute to scientific research on Earth's magnetic field using their smartphone. It offers features for recording magnetic data during various activities, including flights, and provides tools for data visualization and analysis.
- Measure magnetic field data
- Contribute to scientific research
- Record data during flights
- Visualize data on maps and graphs
- Magnetic calculator with WMM2020
- Live magnetic compass
- Export data via email/Google Drive
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Introducing CrowdMag's newest feature: Flight Mode, which lets you contribute to scientific research by measuring the magnetic field as you fly around the world. To get started, simply provide your itinerary on the CrowdMag app, and you'll be able to turn your flight into a scientific expedition. Check out this step-by-step tutorial for measuring data while flying: https://geomag.colorado.edu/crowdmag-flight-mode-tutorial . CrowdMag is an app that lets you measure the local magnetic field using your smartphone. You can view the data as a graph or a map in nanotesla units. CrowdMag measures the Z (downward component), H (horizontal intensity), and F (total intensity) magnetic field components. You can use CrowdMag for measuring magnetic data during outdoor activities, while flying, or to conduct your own experiments. You can also share it with NOAA to help scientists better understand Earth's magnetic field. If you're going for a walk, run, or other outdoor activities, you can use CrowdMag to measure the magnetic data along your path and save it as a "magtivity." And, if you get a new phone, don't worry! You can export a backup of your CrowdMag data and save it on your computer. This way, if you have to reset your phone or switch to a new one, you can import your backup and continue using CrowdMag without losing your data or progress. CrowdMag also has a magnetic calculator that provides magvar (declination), the magnetic field's dip angle, total magnetic field, and other magnetic field components based on the latest World Magnetic Model (WMM2020). Some of the other features of CrowdMag include creating your own magtivities, customizing recording frequency and location accuracy, exporting your data via email or Google Drive, and seeing generalized crowdsourced magnetic data from other users. And, before we forget, CrowdMag also features a compass that distinctly shows both true and magnetic north. As an added feature, the compass also has a 3D display with an optional audio output - check it out! CrowdMag features: * Create your own magnetic activity (called a "magtivity") * Measure data while flying * Customize recording frequency and location accuracy to your preferences * View your magnetic data on an interactive Google Map * Graph your data as a time series line chart * Check the quality of your data by comparing it with the World Magnetic Model (WMM) * Export your data as a CSV file * Clear stored data on your phone when you want to start fresh * Choose to share your data with NOAA (optional) * See generalized crowdsourced magnetic data from other users * Use the live magnetic compass for 2D and 3D rendering * View information about the current solar magnetic disturbance * Use the most up-to-date magnetic field model (WMM2020) * Export your data via email, Google Drive, or other options * Export a CrowdMag backup to save your contributions' status and data * Import your CrowdMag backup (works across different phone platforms) Visit https://geomag.colorado.edu/crowdmag to see crowdsourced magnetic data .
Screenshots
Verdict
The clearest difference is update cadence: SafetyLine at weekly against CrowdMag's every 2 months. CrowdMag's advantage is review sentiment (53% vs 39%) and iOS requirement (15.0 vs 17.0). 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.
SafetyLine ships an update weekly, CrowdMag every 2 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | SafetyLine | CrowdMag |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (25 ratings) — better |
| Positive reviews | 39.1% of reviews | 52.9% of reviews — better |
| Number of ratings | — | 25 — better |
| Update frequency | Weekly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 238 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Tsunami Solutions Ltd. | University of Colorado Boulder |
Customer experience
SafetyLine
CrowdMag
In-app purchases
SafetyLine
No in-app purchases
CrowdMag
No in-app purchases









