# MTP Code Groups vs QSO Central

The clearest difference is update cadence: MTP Code Groups at every 6 weeks against QSO Central's every 4 months. MTP Code Groups also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

MTP Code Groups ships an update every 6 weeks, QSO Central every 4 months. The most recent releases landed on September 26, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | MTP Code Groups | QSO Central |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/qso-central/id6782027339/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | — | Free |
| Size | 49 MB | 7 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Oliver Bross](https://appshunter.io/developer/1859081127) | [Brickhouse Technologies LLC](https://appshunter.io/developer/6781303558) |

## What reviewers say

### MTP Code Groups

[App page](https://appshunter.io/ios/app/mtp-code-groups/id6758036053)

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

**In-app purchases:** none


### QSO Central

[App page](https://appshunter.io/ios/app/qso-central/id6782027339)

Prepare for amateur radio licensing exams with comprehensive study tools and practice tests. Access essential station utilities, reference materials, and live data features, all designed to work offline for maximum accessibility.

**Highlights:** Offline exam preparation with official question pools, Realistic timed practice exams with instant grading, Station toolkit for band plans, antenna, and electrical calculations, Grid square tools and Morse code trainer, Logbook with ADIF/CSV export, Live data for callsign lookup and propagation

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

**In-app purchases:** none


## Frequently asked questions

### Is MTP Code Groups free?

MTP Code Groups is free to download, with no in-app purchases.

### Is QSO Central free?

QSO Central is free to download, with no in-app purchases.

### Do MTP Code Groups or QSO Central have ads?

Neither MTP Code Groups nor QSO Central shows ads.

### Which is updated more often, MTP Code Groups or QSO Central?

MTP Code Groups ships an update every 6 weeks, and QSO Central every 4 months. Most recently, MTP Code Groups was updated on September 26, 2026 and QSO Central on October 17, 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.*