# GNSS Analyzer vs NHDOT eFieldBook

The clearest difference is update cadence: NHDOT eFieldBook at every 3 months against GNSS Analyzer's every 12 months. 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.

GNSS Analyzer ships an update every 12 months, NHDOT eFieldBook every 3 months. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | GNSS Analyzer | NHDOT eFieldBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/gnss-analyzer/id1040750117/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 24 MB | 35 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NEC Corporation](https://appshunter.io/developer/423274625) | [ExeVision](https://appshunter.io/developer/1406987452) |

## What reviewers say

### GNSS Analyzer

[App page](https://appshunter.io/ios/app/gnss-analyzer/id1040750117)

Record and analyze positioning data from QZSS-supported receivers. View satellite radar, signal strength, and current location on a map. Import logs to review past data and receive disaster management reports.

**Highlights:** Record NMEA positioning data, View satellite radar and signal level, Display current position on map, Import and preview recorded NMEA logs, Receive QZSS DC Reports, Share NMEA log files via email

**Features:** Vision Pro support

**In-app purchases:** none


### NHDOT eFieldBook

[App page](https://appshunter.io/ios/app/nhdot-efieldbook/id1406987454)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GNSS Analyzer free?

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

### Is NHDOT eFieldBook free?

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

### Do GNSS Analyzer or NHDOT eFieldBook have ads?

Neither GNSS Analyzer nor NHDOT eFieldBook shows ads.

### Which is updated more often, GNSS Analyzer or NHDOT eFieldBook?

GNSS Analyzer ships an update every 12 months, and NHDOT eFieldBook every 3 months. Most recently, GNSS Analyzer was updated on October 3, 2026 and NHDOT eFieldBook on September 29, 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.*