# Subsurface Maps Offline

> Offline map viewing and editing for Subsurface Maps users. (iPhone/iPad app by Ben Hill.)

- Source: https://appshunter.io/ios/app/subsurface-maps-offline/id6654924764 (this page in markdown: same URL + `.md`)
- Developer: [Ben Hill](https://appshunter.io/developer/1645876200)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 15.0 · 81 MB
- Released: 2024-10-02
- Data updated: 2026-08-21
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/subsurface-maps-offline/id6654924764/reviews.md

## What is Subsurface Maps Offline?

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.

## Key features

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


## Frequently asked questions about Subsurface Maps Offline

### What is Subsurface Maps Offline?

Subsurface Maps Offline allows you to download your existing Subsurface Maps to your iOS device for use without an internet connection. You can view, edit features, and add new points offline.

### How do I sync my changes with Subsurface Maps Offline?

To sync your edits, open the app, navigate to the 'Offline Maps' section in the menu, and click the 'Sync' button next to your map name. This uploads your changes and downloads any updates from your team.

### Can I create new maps or layers with Subsurface Maps Offline?

No, Subsurface Maps Offline is a companion app for basic data collection and viewing. Creating new layers, changing colors, or modifying field layouts must be done in the regular browser-based Subsurface Maps application.

### What devices does Subsurface Maps Offline support?

Subsurface Maps Offline is available for iPhone, iPad, and iPod devices.

### Is Subsurface Maps Offline free to use?

Yes, Subsurface Maps Offline is a free application. It does not have any in-app purchases or advertisements.

### How often is Subsurface Maps Offline updated?

The latest version, 26.4.132, was released on April 15, 2026. Updates are provided to ensure compatibility and functionality.

### What is the age rating for Subsurface Maps Offline?

Subsurface Maps Offline has an age rating of 4+, making it suitable for a wide range of users.

### What do users think of Subsurface Maps Offline?

Based on the available data, users have given Subsurface Maps Offline a perfect rating of 5.0 stars from 2 ratings, indicating high satisfaction.

## Version history (last 5 releases)

### 26.8.142 — 2026-08-18

Bug Fixes

### 26.4.132 — 2026-04-15

Bug Fixes

### 26.3.161 — 2026-03-23

Bug Fixes

### 26.3.52 — 2026-03-11

Bug Fixes

### 26.1.121 — 2026-01-16

Bug Fixes for Processing Locator Messages

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## More apps by Ben Hill

- [Diamond Maps Offline](https://appshunter.io/ios/app/diamond-maps-offline/id6443440300)

All apps by Ben Hill: https://appshunter.io/developer/1645876200

## Related topics

[maptap](https://appshunter.io/ios/topics/maptap)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*