# NPMS Public Viewer vs SMARTPLAN SMART App

The clearest difference is rating: SMARTPLAN SMART App at 5.0 against NPMS Public Viewer's 4.0. SMARTPLAN SMART App also leads on update cadence (fortnightly vs every 2 months). NPMS Public Viewer's advantage is ratings volume (4 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

SMARTPLAN SMART App holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

NPMS Public Viewer ships an update every 2 months, SMARTPLAN SMART App fortnightly. The most recent releases landed on September 22, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | NPMS Public Viewer | SMARTPLAN SMART App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/npms-public-viewer/id1232277603/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smartplan-smart-app/id6511191592/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 2 MB | 190 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pipeline and Hazardous Materials Safety Administration](https://appshunter.io/developer/954888820) | [Technical Response Planning](https://appshunter.io/developer/1467813480) |

## What reviewers say

### NPMS Public Viewer

[App page](https://appshunter.io/ios/app/npms-public-viewer/id1232277603)

View maps of hazardous liquid and gas transmission pipelines. Discover pipeline operators, the materials they transport, and contact information. Locate pipelines by county, offshore area, or proximity to your current location.

**Highlights:** Hazardous pipeline maps, Operator identification, Material transported details, Contact information, Location-based search, County and offshore area selection

**In-app purchases:** none


### SMARTPLAN SMART App

[App page](https://appshunter.io/ios/app/smartplan-smart-app/id6511191592)

Access critical response plan information, including diagrams, checklists, and contact lists, directly from your mobile device. Communicate with contacts via call, text, or email. This app functions offline, ensuring access to vital data even without network coverage.

**Highlights:** Quick access to critical response information, View diagrams and checklists, Access contact lists, Call, text, or email contacts, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is NPMS Public Viewer free?

NPMS Public Viewer is free to download, with no in-app purchases.

### Is SMARTPLAN SMART App free?

SMARTPLAN SMART App is free to download, with no in-app purchases.

### Which has better reviews, NPMS Public Viewer or SMARTPLAN SMART App?

SMARTPLAN SMART App is rated higher. NPMS Public Viewer averages 4.0 out of 5 from 4 ratings, while SMARTPLAN SMART App averages 5.0 from 1 ratings.

### Do NPMS Public Viewer or SMARTPLAN SMART App have ads?

Neither NPMS Public Viewer nor SMARTPLAN SMART App shows ads.

### Which is updated more often, NPMS Public Viewer or SMARTPLAN SMART App?

NPMS Public Viewer ships an update every 2 months, and SMARTPLAN SMART App fortnightly. Most recently, NPMS Public Viewer was updated on September 22, 2026 and SMARTPLAN SMART App on September 11, 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.*