# FieldSense Inspector vs Subsurface Maps Offline

FieldSense Inspector and Subsurface Maps Offline are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FieldSense Inspector ships an update every 5 weeks, Subsurface Maps Offline every 4 weeks. The most recent releases landed on September 23, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | FieldSense Inspector | Subsurface Maps Offline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/subsurface-maps-offline/id6654924764/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 weeks** |
| Monetization | — | Free |
| Size | 40 MB | 81 MB |
| Requires iOS | 16.3 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Honeywell International, Inc.](https://appshunter.io/developer/311222963) | [Ben Hill](https://appshunter.io/developer/1645876200) |

## What reviewers say

### FieldSense Inspector

[App page](https://appshunter.io/ios/app/fieldsense-inspector/id6445966386)

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

**In-app purchases:** none


### 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 FieldSense Inspector free?

FieldSense Inspector 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.

### Do FieldSense Inspector or Subsurface Maps Offline have ads?

Neither FieldSense Inspector nor Subsurface Maps Offline shows ads.

### Which is updated more often, FieldSense Inspector or Subsurface Maps Offline?

FieldSense Inspector ships an update every 5 weeks, and Subsurface Maps Offline every 4 weeks. Most recently, FieldSense Inspector was updated on September 23, 2026 and Subsurface Maps Offline on September 16, 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.*