Subsurface Maps Offline vs Hello Marshall
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Subsurface Maps Offline
Access and edit your maps offline on your iOS device. Download maps from the cloud, make changes, and mark new points. Sync your edits back to the cloud for team access.
- Download maps for offline use
- View and edit map features
- Mark new points
- Sync changes to the cloud
- Turn map layers on/off
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Subsurface Maps Offline is an app that allows existing Subsurface Maps users to download their maps from the cloud to their iOS device for use offline. Using this app you can view your map, turn layers on and off, make changes to any feature, and mark new points. Then when you are back at the office you can use the "Sync" button to upload your changes to the Subsurface Maps cloud where they will be accessible to the rest of your team. The regular browser-based Subsurface Maps application is still the flagship product where you must go to create layers, change colors, modify your field layout, draw lines, etc. The offline app is a less functional version that allows you to do basic data collection and viewing offline. How it works 1. These instructions assume you already have a Subsurface Maps account. 2. Install this app on your tablet or phone. 3. Run the app and enter your Subsurface Maps user name and password. 4. Select which map(s) you want to download to your phone/tablet. 5. Open your map, view it, make changes, add new points, etc. 6. When you are ready to upload your changes click Menu, then click Offline Maps, then click the 'Sync' button next to your map name. This will upload your edits and download any changes that others have made.
Hello Marshall
Stay informed about your city with real-time alerts for road closures, weather, and local events. Access essential city resources quickly and easily.
- Real-time alerts
- Road closure notifications
- Weather alerts
- Event updates
- Access to city resources
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Wondering how to quickly and easily find out what's going on around City of Marshall? Look no further than Hello Marshall to receive the latest alerts on road closures, weather alerts, events and so much more! In addition to notifications, you'll have easy access to commonly used resources from the City!
Screenshots
Verdict
The clearest difference is update cadence: Subsurface Maps Offline at every 4 weeks against Hello Marshall's every 13 months. On price, rating, ratings volume and ads 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.
On the App Store both sit at effectively the same score — 5.0 for Subsurface Maps Offline against 5.0 for Hello Marshall. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
Subsurface Maps Offline ships an update every 4 weeks, Hello Marshall every 13 months. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.
| Parameter | Subsurface Maps Offline | Hello Marshall |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (2 ratings) |
| Number of ratings | 2 | 2 |
| Update frequency | Every 4 weeks — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 81 MB | 132 MB |
| Age rating | 4+ | 4+ |
| Developer | Ben Hill | GOGov, Inc. |
Customer experience
Subsurface Maps Offline
Hello Marshall
In-app purchases
Subsurface Maps Offline
No in-app purchases
Hello Marshall
No in-app purchases
Questions
Is Subsurface Maps Offline free?
Is Hello Marshall free?
Which has better reviews, Subsurface Maps Offline or Hello Marshall?
Do Subsurface Maps Offline or Hello Marshall have ads?
Which is updated more often, Subsurface Maps Offline or Hello Marshall?
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