# Ntrip checker vs Pai Machines

The clearest difference is update cadence: Ntrip checker at every 4 months against Pai Machines's every 9 months. Ntrip checker also leads on iOS requirement (15.6 vs 18.0). 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.

Ntrip checker ships an update every 4 months, Pai Machines every 9 months. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Ntrip checker | Pai Machines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/ntrip-checker/id1459504498/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 9 months |
| Monetization | Ad-supported | — |
| Size | 59 MB | 43 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Navmatix](https://appshunter.io/developer/921372764) | [Tor.ai Limited](https://appshunter.io/developer/1288507527) |

## What reviewers say

### Ntrip checker

[App page](https://appshunter.io/ios/app/ntrip-checker/id1459504498)

This app tests NTRIP Client connections to NTRIP Casters and analyzes RTCM streams. It allows users to configure connection parameters, select mountpoints, and view received RTCM messages, satellite data, and base station proximity.

**Highlights:** Test NTRIP Client connection, Analyze RTCM stream, Configure connection parameters, Select mountpoint, View RTCM message statistics, See GNSS satellite data

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

**In-app purchases:** none


### Pai Machines

[App page](https://appshunter.io/ios/app/pai-machines/id6739330961)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ntrip checker free?

Ntrip checker is free to download, with no in-app purchases.

### Is Pai Machines free?

Pai Machines is free to download, with no in-app purchases.

### Do Ntrip checker or Pai Machines have ads?

Neither Ntrip checker nor Pai Machines shows ads.

### Which is updated more often, Ntrip checker or Pai Machines?

Ntrip checker ships an update every 4 months, and Pai Machines every 9 months. Most recently, Ntrip checker was updated on November 3, 2026 and Pai Machines on October 28, 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.*