# OnScene Xplorer 4 vs Chief Commander

The clearest difference is update cadence: Chief Commander at monthly against OnScene Xplorer 4's every 3 months. OnScene Xplorer 4's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

OnScene Xplorer 4 ships an update every 3 months, Chief Commander monthly. The most recent releases landed on September 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | OnScene Xplorer 4 | Chief Commander |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chief-commander/id6443620928/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | — | Free |
| Size | 243 MB | 40 MB |
| Requires iOS | **13.0** | 14 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Iron Compass Map Co](https://appshunter.io/developer/1237245091) | [Chief Technologies](https://appshunter.io/developer/863837246) |

## What reviewers say

### OnScene Xplorer 4

[App page](https://appshunter.io/ios/app/onscene-xplorer-4/id1562927434)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chief Commander

[App page](https://appshunter.io/ios/app/chief-commander/id6443620928)

This app provides essential information for emergency response vehicles like fire trucks and ambulances. It offers features such as hydrant locations, pre-plans, responder status, and two-way CAD integration for enhanced operational awareness.

**Highlights:** Hydrant locations, Pre-plans, Who is Responding, Unit Statuses, Two Way CAD integration

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

**In-app purchases:** none


## Frequently asked questions

### Is OnScene Xplorer 4 free?

OnScene Xplorer 4 is free to download, with no in-app purchases.

### Is Chief Commander free?

Chief Commander is free to download, with no in-app purchases.

### Do OnScene Xplorer 4 or Chief Commander have ads?

Neither OnScene Xplorer 4 nor Chief Commander shows ads.

### Which is updated more often, OnScene Xplorer 4 or Chief Commander?

OnScene Xplorer 4 ships an update every 3 months, and Chief Commander monthly. Most recently, OnScene Xplorer 4 was updated on September 10, 2026 and Chief Commander on October 14, 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.*