# EPA NWCA vs GNSS Survey Logger

The clearest difference is update cadence: EPA NWCA at fortnightly against GNSS Survey Logger's every 6 weeks. GNSS Survey Logger's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support 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, GNSS Survey Logger every 6 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | EPA NWCA | GNSS Survey Logger |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Size | 55 MB | 20 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [United States Environmental Protection Agency (USEPA)](https://appshunter.io/developer/466052690) | [Attila Vekony](https://appshunter.io/developer/1847745825) |

## 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


### GNSS Survey Logger

[App page](https://appshunter.io/ios/app/gnss-survey-logger/id6773111642)

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

**In-app purchases:** none


## Frequently asked questions

### Is EPA NWCA free?

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

### Is GNSS Survey Logger free?

GNSS Survey Logger is free to download, with no in-app purchases.

### Do EPA NWCA or GNSS Survey Logger have ads?

Neither EPA NWCA nor GNSS Survey Logger shows ads.

### Which is updated more often, EPA NWCA or GNSS Survey Logger?

EPA NWCA ships an update fortnightly, and GNSS Survey Logger every 6 weeks. Most recently, EPA NWCA was updated on November 3, 2026 and GNSS Survey Logger on October 31, 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.*