# Pirmam GPS Server vs NavCalc Dynamic

The clearest difference is update cadence: NavCalc Dynamic at every 6 days against Pirmam GPS Server's every 21 months. NavCalc Dynamic also leads on rating (5.0 vs 4.8). Pirmam GPS Server's advantage is ratings volume (4 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NavCalc Dynamic holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Pirmam GPS Server ships an update every 21 months, NavCalc Dynamic every 6 days. The most recent releases landed on June 1, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Pirmam GPS Server | NavCalc Dynamic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/pirmam-gps-server/id1498037762/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/navcalc-dynamic/id1638841716/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 6 days** |
| Monetization | Free | Free |
| Size | 22 MB | 15 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pirmam for information technology services ltd](https://appshunter.io/developer/1459039831) | [Richard Craddock](https://appshunter.io/developer/1579756955) |

## What reviewers say

### Pirmam GPS Server

[App page](https://appshunter.io/ios/app/pirmam-gps-server/id1498037762)

This application allows for the real-time monitoring of staff members' vehicle activities, including location, speed, and ignition status. It provides a comprehensive overview of actions taken and historical data for each vehicle.

**Highlights:** Monitor location, Monitor speed, Monitor bearing, Control car ignition, Monitor time of action, Real-time monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### NavCalc Dynamic

[App page](https://appshunter.io/ios/app/navcalc-dynamic/id1638841716)

This app calculates the course and speed needed to counteract current and wind effects for navigation. It visually displays these calculations on a compass rose, dynamically updating as parameters change. Useful for learning and solving real-world sailing problems.

**Highlights:** Calculate Course to Steer (CtS), Calculate Speed over Ground (SoG), Visual compass rose display, Dynamic parameter updates, Magnetic variation input, Leeway and wind direction input

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pirmam GPS Server free?

Pirmam GPS Server is free to download, with no in-app purchases.

### Is NavCalc Dynamic free?

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

### Which has better reviews, Pirmam GPS Server or NavCalc Dynamic?

NavCalc Dynamic is rated higher. Pirmam GPS Server averages 4.8 out of 5 from 4 ratings, while NavCalc Dynamic averages 5.0 from 1 ratings.

### Do Pirmam GPS Server or NavCalc Dynamic have ads?

Neither Pirmam GPS Server nor NavCalc Dynamic shows ads.

### Which is updated more often, Pirmam GPS Server or NavCalc Dynamic?

Pirmam GPS Server ships an update every 21 months, and NavCalc Dynamic every 6 days. Most recently, Pirmam GPS Server was updated on June 1, 2026 and NavCalc Dynamic on June 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.*