Resgrid Unit vs CalTopo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Resgrid Unit
This app helps emergency response teams coordinate personnel, resources, and incidents. It provides AVL tracking, status updates, and offline support for communication and management in critical situations. It can also manage calls and dispatch personnel via multiple channels.
- Personnel and resource management
- Automatic Vehicle Location (AVL) tracking
- Operational status and task tracking
- Offline support for communication
- Incident and call management
- Multi-channel dispatching
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Resgrid is a logistics, communication and management (LCM) system that can be used by fire departments (volunteer and career), police, emergency medical services (EMS), search and rescue (SAR), hazmat, CERT, emergency management and other first responder or disaster response organizations to coordinate, communicate and manage personnel, resources (units/apparatuses), incident and reporting. The Resgrid Unit app is intended to be used by Units, both apparatuses and groups of personnel, to provide AVL (Automatic Vehicle Location) and support for tracking operational status, objective and task completion, events, dispatch units, personnel accountability and much more. The Resgrid Unit app also supports offline scenarios (after syncing with the system via an Internet connection) to allow usage of the app and tracking of events where there is no cellular signal. Resgrid can manage your calls, generated either internally or from an external CAD system. Auto import calls via emails, text messages or API calls. Resgrid can dispatch via Push Notifications, Email, Text Messages and Voice Calls. So even your personnel without smartphones or cell phones at all can use landlines to get dispatched from anywhere in the world. Resgrid is the only complete LCM (Logistics, Communication & Management) system for first responders and disaster response. With a suite of mobile applications (for Personnel, Units, Incident Commands and Data Reporting) and a zero-installation cloud-based SaaS backend, you can get up and running in minutes. Continued use of GPS running in the background can dramatically decrease battery life.
CalTopo
Plan and navigate off-grid adventures with detailed offline maps and real-time weather forecasts. Trusted by professionals, this app offers seamless syncing and collaborative planning for backcountry pursuits.
- Offline map downloads
- Satellite imagery
- Route planning
- GPS tracking
- Weather forecasting
- Collaborative map sharing
- Slope angle shading
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New on CalTopo: the CalTopo app is now satellite ready, allowing you to use many features of the app offline with satellite data! Take the best mapping app with you wherever you go with the CalTopo app for iOS. Trusted by professional mountain guides, avalanche educators, and search and rescue teams, CalTopo has all the features you need to plan your next off-grid pursuit. Seamless integration between CalTopo online and your mobile device allows you to access and update your maps no matter where you are. Any changes you make will automatically sync across all devices, making exporting and importing your latest map a thing of the past. The CalTopo app allows you to easily take your planning and navigation to the next level. Real time decision making in backcountry terrain is made easy with the ability to download maps and layers like slope angle shading to your device for offline use. Plan for conditions on your route with sun exposure, wind, precipitation and avalanche forecasts. View and track your location on the map using GPS, even if you are offline. Share maps with your teams or travel partners to plan collaboratively, and to ensure everyone has the necessary data. Monitor real time updates from the field, like your friends progress on a long outing with live tracking on shared maps. Plan and navigate your next adventure with the CalTopo App today! Map layers include: • MapBuilder Topo, Hybrid and Overlay • Forest Service Maps • Scanned Topos • Global Imagery • Shaded Relief • Slope Angle Shading (including high resolution elevation data where available) • Parcel data • Public Lands • Weekly Satellite Imagery • NAIP Satellite Imagery • Sun Exposure • Marine Charts • Weather Forecasting (including wind, precipitation, and temperatures) • Snow and Water Gauge Data • Fire History/Activity • And many more Support and Feature Requests: Email us at help@caltopo.com.
Screenshots
Verdict
The clearest difference is update cadence: CalTopo at every 2 weeks against Resgrid Unit's every 5 months. CalTopo also leads on ratings volume (7.5K vs 2) and chart position (#130 vs unranked). On price, rating, 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.
Resgrid Unit holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: CalTopo has 7.5K ratings behind it against 2, so its average is the more settled of the two.
Resgrid Unit ships an update every 5 months, CalTopo every 2 weeks. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.
| Parameter | Resgrid Unit | CalTopo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.8 (7.5K ratings) |
| Positive reviews | — | 56.5% of reviews |
| Number of ratings | 2 | 7.5K — better |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | — | #130 — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.1 | 16.0 — better |
| Further details — not scored | ||
| Size | 127 MB | 165 MB |
| Age rating | 12+ | 4+ |
| Developer | Resgrid, LLC. | CalTopo LLC |
Customer experience
Resgrid Unit
CalTopo
Bugs and requests
Resgrid Unit
Not enough reviews yet to summarise bugs or requests.
CalTopo
Reported bugs
4 issues- Trails and tracks disappearing
- Coordinate display issues
- Frequent app crashes and freezes
- Incompatibility with older devices
Requested features
5 requests- Add 3D map view
- Implement route snapping to trails
- Improve offline map download capabilities
- Add photo geotagging functionality
- Implement course-up map orientation
In-app purchases
Resgrid Unit
No in-app purchases
CalTopo
No in-app purchases









