# EPA NWCA vs Stud Finder Pro

The clearest difference is ads: EPA NWCA at none against Stud Finder Pro's shown. EPA NWCA also leads on update cadence (fortnightly vs every 2 months) and device support (3 vs 1). On price 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, Stud Finder Pro every 2 months. The most recent releases landed on October 14, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | EPA NWCA | Stud Finder Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 55 MB | 7 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [United States Environmental Protection Agency (USEPA)](https://appshunter.io/developer/466052690) | [Cloud Motion Lab LLC](https://appshunter.io/developer/1866865109) |

## 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


### Stud Finder Pro

[App page](https://appshunter.io/ios/app/stud-finder-pro-stud-sensor/id6759074563)

**In-app purchases:** none


## Frequently asked questions

### Is EPA NWCA free?

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

### Is Stud Finder Pro free?

Stud Finder Pro is free to download, with no in-app purchases.

### Do EPA NWCA or Stud Finder Pro have ads?

Stud Finder Pro shows ads; EPA NWCA does not.

### Which is updated more often, EPA NWCA or Stud Finder Pro?

EPA NWCA ships an update fortnightly, and Stud Finder Pro every 2 months. Most recently, EPA NWCA was updated on October 14, 2026 and Stud Finder Pro on October 20, 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.*