# Subsurface Maps Offline vs Hello Marshall

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.

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.

## The numbers

| Metric | Subsurface Maps Offline | Hello Marshall |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/subsurface-maps-offline/id6654924764/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/hello-marshall/id6747905492/reviews) |
| Number of ratings | 2 | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 13 months |
| Monetization | Free | Free |
| Size | 81 MB | 132 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ben Hill](https://appshunter.io/developer/1645876200) | [GOGov, Inc.](https://appshunter.io/developer/351223719) |

## What reviewers say

### Subsurface Maps Offline

[App page](https://appshunter.io/ios/app/subsurface-maps-offline/id6654924764)

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.

**Highlights:** Download maps for offline use, View and edit map features, Mark new points, Sync changes to the cloud, Turn map layers on/off

**In-app purchases:** none


### Hello Marshall

[App page](https://appshunter.io/ios/app/hello-marshall/id6747905492)

Stay informed about your city with real-time alerts for road closures, weather, and local events. Access essential city resources quickly and easily.

**Highlights:** Real-time alerts, Road closure notifications, Weather alerts, Event updates, Access to city resources

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

**In-app purchases:** none


## Frequently asked questions

### Is Subsurface Maps Offline free?

Subsurface Maps Offline is free to download, with no in-app purchases.

### Is Hello Marshall free?

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

### Which has better reviews, Subsurface Maps Offline or Hello Marshall?

Subsurface Maps Offline and Hello Marshall are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do Subsurface Maps Offline or Hello Marshall have ads?

Neither Subsurface Maps Offline nor Hello Marshall shows ads.

### Which is updated more often, Subsurface Maps Offline or Hello Marshall?

Subsurface Maps Offline ships an update every 4 weeks, and Hello Marshall every 13 months. Most recently, Subsurface Maps Offline was updated on October 3, 2026 and Hello Marshall on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*