CrowdMag vs Geode Connect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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 .
Geode Connect
Configure and communicate with a GNSS receiver to collect precise location data. Adjust settings, monitor real-time position, and access detailed receiver output for various accuracy needs.
- Configure Geode GNSS receiver settings
- Monitor real-time position and accuracy
- Select SBAS, L-Band, or NTRIP corrections
- View satellite skyplot
- Access raw data and direct commands
- Control receiver settings for work environments
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GEODE CONNECT is a configuration and communication utility for the GEODE GNSS RECEIVER. It provides the ability to establish communications to the Geode Real-Time Sub-meter GPS/GNSS Receiver, change receiver settings, and displays position, altitude, estimated horizontal error, differential status fix info, speed, heading, satellites in fix and PDOP. Using the Configure Receiver settings menu, select SBAS, Atlas® L-Band, or NTRIP-delivered RTK Float corrections for selectable accuracy to fit your job. The Skyplot screen shows satellites in use for the various supported constellations and their distribution in the sky. A terminal screen is included to allow users a “deep dive” into the actual data output from the receiver, and direct command access. The Receiver Configuration menu provides the ability to control a wide range of receiver settings to suit your work environment. REAL-TIME SCALABLE ACCURACY GNSS RECEIVER Looking for a simple yet precise GNSS solution at an affordable price? With the Geode, you can easily collect real-time, sub-meter, sub-foot or decimeter accurate GNSS data without the huge price tag or complexity of other precision receivers. Designed with versatility in mind, the Geode works with a wide range of devices to fit your needs exactly, and is especially useful for bring-your-own-device workplaces. Take the Geode with you mounted on a pole, in a pack, or held in your hand to collect real-time precise GNSS data in harsh environments, using almost any handheld device. For information on the Geode GPS Receiver, visit our product page at www.junipersys.com. Disclaimer: Using the Geode Connect software and a Bluetooth connection to the Geode receiver continuously will increase consumption of battery power on your mobile device.
Screenshots
Verdict
The clearest difference is review sentiment: CrowdMag at 53% against Geode Connect's 0%. CrowdMag also leads on rating (4.3 vs 3.8) and update cadence (every 2 months vs every 4 months). Geode Connect's advantage is iOS requirement (12.2 vs 15.0). On price, ratings volume, 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.
CrowdMag holds the better App Store score, 4.3 against 3.8. Both are backed by a comparable volume of ratings — 24 and 9 respectively. Written reviews point the same way: 53% of CrowdMag's written reviews are positive against 0% of Geode Connect's.
CrowdMag ships an update every 2 months, Geode Connect every 4 months. The most recent releases landed on September 22, 2026 and June 5, 2026 respectively.
| Parameter | CrowdMag | Geode Connect |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (24 ratings) — better | 3.8 (9 ratings) |
| Positive reviews | 52.9% of reviews — better | 0.0% of reviews |
| Number of ratings | 24 — better | 9 |
| Update frequency | Every 2 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 | 15.0 | 12.2 — better |
| Further details — not scored | ||
| Size | 18 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | University of Colorado Boulder | Juniper Systems, Inc. |
Customer experience
CrowdMag
Geode Connect
In-app purchases
CrowdMag
No in-app purchases
Geode Connect
No in-app purchases









