# KorTerra Field vs Subsurface Maps Offline

The clearest difference is rating: Subsurface Maps Offline at 5.0 against KorTerra Field's 4.5. KorTerra Field's advantage is ratings volume (20 vs 2). On price, update cadence, 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.

Subsurface Maps Offline holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: KorTerra Field has 20 ratings behind it against 2, so its average is the more settled of the two.

KorTerra Field ships an update every 3 weeks, Subsurface Maps Offline every 4 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | KorTerra Field | Subsurface Maps Offline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (20 ratings)](https://appshunter.io/ios/app/korterra-field/id1579916966/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/subsurface-maps-offline/id6654924764/reviews)** |
| Number of ratings | **20** | 2 |
| Positive reviews | 8.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free | Free |
| Size | 109 MB | 81 MB |
| Requires iOS | **14.5** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KorTerra, Inc.](https://appshunter.io/developer/594835372) | [Ben Hill](https://appshunter.io/developer/1645876200) |

## What reviewers say

### KorTerra Field

[App page](https://appshunter.io/ios/app/korterra-field/id1579916966)

Manage 811 locate tickets efficiently on the go. Plan your day, upload photos, and communicate directly with ticket owners. Features offline capabilities for continued work without a connection.

**Highlights:** Manage 811 tickets, Upload photos to tickets, Click-to-call/email, Offline ticket management, Map-centric views, Timesheet management

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

**In-app purchases:** none

**What reviewers like**

- 👍 Getting better
- 👍 Works great
- 👍 Recommend
- 👍 Well trained representatives
- 👍 Understands user needs

**What reviewers complain about**

- 🐛 App crashes daily
- 🐛 Constant crashing
- 🐛 Sync issues
- 🐛 Map not loading
- 🐛 Uploading pictures fails

**Reported bugs**

- Application starting is all it will do
- App demands location settings to be ‘Always On’
- App crashes daily
- App crashes when scrolling map too quickly or zooming too fast
- New update crashes more

**Requested features**

- Ability to include all photos in a ticket at one time
- Queuing system for photo uploads
- Location and zoom memory for mapping
- Include all photos in a ticket at one time
- Ability to include all photos in a ticket at one time


### 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


## Frequently asked questions

### Is KorTerra Field free?

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

### Is Subsurface Maps Offline free?

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

### Which has better reviews, KorTerra Field or Subsurface Maps Offline?

Subsurface Maps Offline is rated higher. KorTerra Field averages 4.5 out of 5 from 20 ratings, while Subsurface Maps Offline averages 5.0 from 2 ratings.

### Do KorTerra Field or Subsurface Maps Offline have ads?

Neither KorTerra Field nor Subsurface Maps Offline shows ads.

### Which is updated more often, KorTerra Field or Subsurface Maps Offline?

KorTerra Field ships an update every 3 weeks, and Subsurface Maps Offline every 4 weeks. Most recently, KorTerra Field was updated on November 3, 2026 and Subsurface Maps Offline on November 4, 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.*