# NMPP Operations vs Subsurface Maps Offline

The clearest difference is update cadence: Subsurface Maps Offline at every 4 weeks against NMPP Operations's every 10 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 NMPP Operations against 5.0 for Subsurface Maps Offline. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

NMPP Operations ships an update every 10 months, Subsurface Maps Offline every 4 weeks. The most recent releases landed on September 29, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | NMPP Operations | Subsurface Maps Offline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/nmpp-operations/id1571982454/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/subsurface-maps-offline/id6654924764/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 110 MB | 81 MB |
| Requires iOS | **14.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nebraska Municipal Power Pool](https://appshunter.io/developer/1571982696) | [Ben Hill](https://appshunter.io/developer/1645876200) |

## What reviewers say

### NMPP Operations

[App page](https://appshunter.io/ios/app/nmpp-operations/id1571982454)

This app facilitates mutual aid requests by connecting users with a coordinator for equipment and personnel needs. It also allows for quick reporting of system outages and notification of municipal generation operations to stakeholders.

**Highlights:** Mutual aid request submission, Direct contact with coordinator, System outage reporting, Generation notification, Resource tracking

**Features:** macOS Compatibility

**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 NMPP Operations free?

NMPP Operations 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, NMPP Operations or Subsurface Maps Offline?

NMPP Operations and Subsurface Maps Offline are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do NMPP Operations or Subsurface Maps Offline have ads?

Neither NMPP Operations nor Subsurface Maps Offline shows ads.

### Which is updated more often, NMPP Operations or Subsurface Maps Offline?

NMPP Operations ships an update every 10 months, and Subsurface Maps Offline every 4 weeks. Most recently, NMPP Operations was updated on September 29, 2026 and Subsurface Maps Offline on October 3, 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.*