# Butterfly Training vs DG Crews

The clearest difference is in-app purchases: Butterfly Training at none against DG Crews's 1. Butterfly Training also leads on iOS requirement (9.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DG Crews sells 1 in-app purchase, starting at $12.99 per year. Butterfly Training asks for nothing beyond the download.

Butterfly Training ships an update every 4 months, DG Crews every 5 months. The most recent releases landed on September 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Butterfly Training | DG Crews |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/dg-crews/id1188093895/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 42.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | — | Subscription |
| Size | 40 MB | 63 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BUTTERFLY AERO TRAINING](https://appshunter.io/developer/1481266120) | [Pedro Jose Villarroel Cuevas](https://appshunter.io/developer/558476272) |

## What reviewers say

### Butterfly Training

[App page](https://appshunter.io/ios/app/butterfly-training/id1153427889)

**Features:** macOS Compatibility

**In-app purchases:** none


### DG Crews

[App page](https://appshunter.io/ios/app/dg-crews/id1188093895)

This app provides essential dangerous goods information for air transport professionals. It offers quick access to regulations, handling requirements, and emergency procedures for safe and compliant operations.

**Highlights:** Classification & Label Reference, Lithium Batteries Guidance, Segregation Rules, Drill Code Search, Emergency Checklists, Dangerous Goods Permitted on Flights

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DGCrew Subscription | $12.99 | per year |


## Frequently asked questions

### Is Butterfly Training free?

Butterfly Training is free to download, with no in-app purchases.

### Is DG Crews free?

DG Crews is free to download, with in-app purchases available.

### Do Butterfly Training or DG Crews have ads?

Neither Butterfly Training nor DG Crews shows ads.

### Which is updated more often, Butterfly Training or DG Crews?

Butterfly Training ships an update every 4 months, and DG Crews every 5 months. Most recently, Butterfly Training was updated on September 24, 2026 and DG Crews on October 21, 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.*