# Acron B737NG ETHOS vs Halldale Events

The clearest difference is iOS requirement: Acron B737NG ETHOS at 15.6 against Halldale Events's 17.0. On price, update cadence, 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.

Acron B737NG ETHOS ships an update every 6 months, Halldale Events every 5 months. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Acron B737NG ETHOS | Halldale Events |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/acron-b737ng-ethos/id1583033489/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 18 MB | 78 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Aerosim](https://appshunter.io/developer/491766443) | [Halldale Media Inc.](https://appshunter.io/developer/938861479) |

## What reviewers say

### Acron B737NG ETHOS

[App page](https://appshunter.io/ios/app/acron-b737ng-ethos/id1583033489)

This application serves as a Flight Management System Trainer for aviation professionals. It enables users to run courseware or freeplay simulations, requiring an account from an affiliated Acron ETHOS training partner.

**Highlights:** Flight Management System Trainer, Courseware simulation, Freeplay simulation, Aviation industry focus, Requires user account

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

**In-app purchases:** none


### Halldale Events

[App page](https://appshunter.io/ios/app/halldale-events/id6742465065)

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

**In-app purchases:** none


## Frequently asked questions

### Is Acron B737NG ETHOS free?

Acron B737NG ETHOS is free to download, with no in-app purchases.

### Is Halldale Events free?

Halldale Events is free to download, with no in-app purchases.

### Do Acron B737NG ETHOS or Halldale Events have ads?

Neither Acron B737NG ETHOS nor Halldale Events shows ads.

### Which is updated more often, Acron B737NG ETHOS or Halldale Events?

Acron B737NG ETHOS ships an update every 6 months, and Halldale Events every 5 months. Most recently, Acron B737NG ETHOS was updated on November 5, 2026 and Halldale Events on October 30, 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.*