# Resgrid Unit vs CalTopo

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 (#134 vs unranked). On price, rating, 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.

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 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Resgrid Unit | CalTopo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/resgrid-unit/id854151893/reviews)** | [4.8 (7.5K ratings)](https://appshunter.io/ios/app/caltopo-backcountry-mapping/id1460038458/reviews) |
| Number of ratings | 2 | **7.5K** |
| Positive reviews | — | 56.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Best chart rank | — | **#134** |
| Size | 127 MB | 165 MB |
| Requires iOS | 18.1 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Resgrid, LLC.](https://appshunter.io/developer/1660322782) | [CalTopo LLC](https://appshunter.io/developer/1460038457) |

## What reviewers say

### Resgrid Unit

[App page](https://appshunter.io/ios/app/resgrid-unit/id854151893)

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.

**Highlights:** 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

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

**In-app purchases:** none


### CalTopo

[App page](https://appshunter.io/ios/app/caltopo-backcountry-mapping/id1460038458)

**Currently charting:** #134 Top Free · Navigation (US App Store)

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.

**Highlights:** Offline map downloads, Satellite imagery, Route planning, GPS tracking, Weather forecasting, Collaborative map sharing, Slope angle shading

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Powerful mapping features
- 💡 Extensive data layers
- 👍 Detailed trail and terrain information
- 👍 Useful for SAR operations
- 👍 Great for planning outdoor adventures

**What reviewers complain about**

- 🐛 Buggy and unstable mobile app
- 🐛 Maps not always loading properly
- 🐛 Slow map rendering
- 🔋 High battery consumption
- 👎 Difficult to use for casual users

**Reported bugs**

- Trails and tracks disappearing
- Coordinate display issues
- Frequent app crashes and freezes
- Incompatibility with older devices

**Requested features**

- Add 3D map view
- Implement route snapping to trails
- Improve offline map download capabilities
- Add photo geotagging functionality
- Implement course-up map orientation


## Frequently asked questions

### Is Resgrid Unit free?

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

### Is CalTopo free?

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

### Which has better reviews, Resgrid Unit or CalTopo?

Resgrid Unit is rated higher. Resgrid Unit averages 5.0 out of 5 from 2 ratings, while CalTopo averages 4.8 from 7.5K ratings.

### Do Resgrid Unit or CalTopo have ads?

Neither Resgrid Unit nor CalTopo shows ads.

### Which is updated more often, Resgrid Unit or CalTopo?

Resgrid Unit ships an update every 5 months, and CalTopo every 2 weeks. Most recently, Resgrid Unit was updated on October 23, 2026 and CalTopo on October 24, 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.*