# EPA NWCA vs VJHumidity

The clearest difference is iOS requirement: VJHumidity at 12.4 against EPA NWCA'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.

EPA NWCA ships an update fortnightly, VJHumidity every 8 days. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | EPA NWCA | VJHumidity |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 8 days** |
| Size | 55 MB | 13 MB |
| Requires iOS | 15.0 | **12.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [United States Environmental Protection Agency (USEPA)](https://appshunter.io/developer/466052690) | [CHANG SHIN VIETNAM COMPANY LTD](https://appshunter.io/developer/1603354571) |

## What reviewers say

### EPA NWCA

[App page](https://appshunter.io/ios/app/epa-nwca/id1465990157)

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

**In-app purchases:** none


### VJHumidity

[App page](https://appshunter.io/ios/app/vjhumidity/id1671924199)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EPA NWCA free?

EPA NWCA is free to download, with no in-app purchases.

### Is VJHumidity free?

VJHumidity is free to download, with no in-app purchases.

### Do EPA NWCA or VJHumidity have ads?

Neither EPA NWCA nor VJHumidity shows ads.

### Which is updated more often, EPA NWCA or VJHumidity?

EPA NWCA ships an update fortnightly, and VJHumidity every 8 days. Most recently, EPA NWCA was updated on October 14, 2026 and VJHumidity on October 5, 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.*