# ATC Readback Trainer vs Model Engine Builder

The clearest difference is in-app purchases: ATC Readback Trainer at none against Model Engine Builder's 1. ATC Readback Trainer also leads on ads (none vs shown) and update cadence (every 6 days vs every 2 weeks). Model Engine Builder's advantage is iOS requirement (15.6 vs 18.5). On price and device support there is nothing between them.

Both are free to download. Model Engine Builder sells 1 one-off in-app purchase. ATC Readback Trainer asks for nothing beyond the download.

ATC Readback Trainer ships an update every 6 days, Model Engine Builder every 2 weeks. The most recent releases landed on September 23, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | ATC Readback Trainer | Model Engine Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/atc-readback-trainer/id6756803879/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 62 MB | 20 MB |
| Requires iOS | 18.5 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anders Laederich](https://appshunter.io/developer/1821802211) | [MIN GYu OH](https://appshunter.io/developer/6803589847) |

## What reviewers say

### ATC Readback Trainer

[App page](https://appshunter.io/ios/app/atc-readback-trainer/id6756803879)

Master air traffic control radio communications with realistic audio practice. Features two training modes, comprehensive scenarios across 8 categories, and progress tracking with difficulty levels. Ideal for pilots and aviation enthusiasts.

**Highlights:** Realistic ATC audio with radio effects, Study Mode with text and audio, Real ATC Mode for audio-only practice, 8 comprehensive ATC scenario categories, Progress tracking with detailed statistics, Three difficulty levels

**In-app purchases:** none


### Model Engine Builder

[App page](https://appshunter.io/ios/app/model-engine-builder/id6803801661)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| removeads | $1.99 | one-time |


## Frequently asked questions

### Is ATC Readback Trainer free?

ATC Readback Trainer is free to download, with no in-app purchases.

### Is Model Engine Builder free?

Model Engine Builder is free to download, with in-app purchases available.

### Do ATC Readback Trainer or Model Engine Builder have ads?

Model Engine Builder shows ads; ATC Readback Trainer does not.

### Which is updated more often, ATC Readback Trainer or Model Engine Builder?

ATC Readback Trainer ships an update every 6 days, and Model Engine Builder every 2 weeks. Most recently, ATC Readback Trainer was updated on September 23, 2026 and Model Engine Builder on October 4, 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.*