# NPMS/PP App vs Washington State EPCRA Viewer

The clearest difference is iOS requirement: Washington State EPCRA Viewer at 13.0 against NPMS/PP App's 15.0. 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.

Both ship on a similar rhythm, roughly every 11 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | NPMS/PP App | Washington State EPCRA Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | Every 11 months |
| Size | 24 MB | 10 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Centre for Ecology and Hydrology](https://appshunter.io/developer/986306797) | [Department of Ecology](https://appshunter.io/developer/1023384734) |

## What reviewers say

### NPMS/PP App

[App page](https://appshunter.io/ios/app/npmspp-app/id1161238829)

**Features:** Vision Pro support

**In-app purchases:** none


### Washington State EPCRA Viewer

[App page](https://appshunter.io/ios/app/washington-state-epcra-viewer/id1614798072)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NPMS/PP App free?

NPMS/PP App is free to download, with no in-app purchases.

### Is Washington State EPCRA Viewer free?

Washington State EPCRA Viewer is free to download, with no in-app purchases.

### Do NPMS/PP App or Washington State EPCRA Viewer have ads?

Neither NPMS/PP App nor Washington State EPCRA Viewer shows ads.

### Which is updated more often, NPMS/PP App or Washington State EPCRA Viewer?

NPMS/PP App ships an update every 11 months, and Washington State EPCRA Viewer every 11 months. Most recently, NPMS/PP App was updated on October 24, 2026 and Washington State EPCRA Viewer on October 27, 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.*