# GNSS Analyzer vs VIPER LED

The clearest difference is update cadence: VIPER LED at every 6 weeks against GNSS Analyzer's every 12 months. GNSS Analyzer's advantage is iOS requirement (14.0 vs 16.6). 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, VIPER LED every 6 weeks. The most recent releases landed on September 18, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | GNSS Analyzer | VIPER LED |
| --- | --- | --- |
| 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 6 weeks** |
| Monetization | Free | — |
| Size | 24 MB | 4 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [NEC Corporation](https://appshunter.io/developer/423274625) | [Sergei Fetisov](https://appshunter.io/developer/1410631641) |

## 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

**In-app purchases:** none


### VIPER LED

[App page](https://appshunter.io/ios/app/viper-led/id6754922817)

**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 VIPER LED free?

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

### Do GNSS Analyzer or VIPER LED have ads?

Neither GNSS Analyzer nor VIPER LED shows ads.

### Which is updated more often, GNSS Analyzer or VIPER LED?

GNSS Analyzer ships an update every 12 months, and VIPER LED every 6 weeks. Most recently, GNSS Analyzer was updated on September 18, 2026 and VIPER LED on June 11, 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.*