NPMS/PP App vs NPMS Public Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NPMS/PP App
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The National Plant Monitoring Scheme (NPMS) is a habitat-based plant monitoring scheme designed by BSBI, UKCEH, Plantlife and JNCC. The aim is to collect data to provide an annual indication of changes in plant abundance and diversity. The Plant Portal is a new website for capturing plant quadrat data. It allows organisations to use the methods developed by the scheme to monitor their own landscapes or areas.
NPMS Public Viewer
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.
- Hazardous pipeline maps
- Operator identification
- Material transported details
- Contact information
- Location-based search
- County and offshore area selection
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The Pipeline and Hazardous Materials Safety Administration’s (PHMSA) National Pipeline Mapping System (NPMS) has developed the NPMS Public Viewer iPhone app to allow the public to view hazardous liquid and gas transmission pipeline maps. The user can see who operates a pipeline, what it transports, and who to contact for further information. To get started, a user may choose one county or offshore area (including state waters or federal waters) or choose to see pipelines closest to the user’s current location. For more information about the NPMS, or to access the full desktop browser version of the NPMS Public Map Viewer, go to the NPMS website at https://www.npms.phmsa.dot.gov/.
Screenshots
Verdict
The clearest difference is update cadence: NPMS Public Viewer at every 2 months against NPMS/PP App's every 11 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
NPMS/PP App ships an update every 11 months, NPMS Public Viewer every 2 months. The most recent releases landed on September 14, 2026 and September 22, 2026 respectively.
| Parameter | NPMS/PP App | NPMS Public Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (4 ratings) — better |
| Positive reviews | — | 40.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 11 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Centre for Ecology and Hydrology | Pipeline and Hazardous Materials Safety Administration |
In-app purchases
NPMS/PP App
No in-app purchases
NPMS Public Viewer
No in-app purchases
