# Fire Behaviour Calculator vs AskRail

The clearest difference is review sentiment: AskRail at 58% against Fire Behaviour Calculator's 0%. AskRail also leads on rating (4.1 vs 2.0) and ratings volume (37 vs 1). Fire Behaviour Calculator's advantage is iOS requirement (9.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

AskRail holds the better App Store score, 4.1 against 2.0. That said, the two scores are not equally well evidenced: AskRail has 37 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Fire Behaviour Calculator's written reviews are positive against 58% of AskRail's.

Fire Behaviour Calculator ships an update every 9 months, AskRail every 4 months. Both last shipped on October 3, 2026.

## The numbers

| Metric | Fire Behaviour Calculator | AskRail |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/fire-behaviour-calculator/id665759541/reviews) | **[4.1 (37 ratings)](https://appshunter.io/ios/app/askrail/id1142325064/reviews)** |
| Number of ratings | 1 | **37** |
| Positive reviews | 0.0% of reviews | **58.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 4 MB | 44 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Scion](https://appshunter.io/developer/665759544) | [Association of American Railroads](https://appshunter.io/developer/1142325063) |

## What reviewers say

### Fire Behaviour Calculator

[App page](https://appshunter.io/ios/app/fire-behaviour-calculator/id665759541)

This app provides calculations for fire behavior based on established fuel and fire models. It's a useful tool for understanding fire dynamics, developed with support from the NZ fire service commission.

**Highlights:** Fuel and fire behavior models, Scion Rural Fire Research models, NZ fire service commission support, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### AskRail

[App page](https://appshunter.io/ios/app/askrail/id1142325064)

This app provides hazardous materials safety information for first responders dealing with rail incidents. It allows authorized personnel to query railcar contents and offers critical data for emergency response. Access to advanced features requires verification and railroad sponsorship.

**Highlights:** Hazardous materials safety information, Rail incident support, Query railcar contents, Emergency response data, First responder tool

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

**In-app purchases:** none


## Frequently asked questions

### Is Fire Behaviour Calculator free?

Fire Behaviour Calculator is free to download, with no in-app purchases.

### Is AskRail free?

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

### Which has better reviews, Fire Behaviour Calculator or AskRail?

AskRail is rated higher. Fire Behaviour Calculator averages 2.0 out of 5 from 1 ratings, while AskRail averages 4.1 from 37 ratings.

### Do Fire Behaviour Calculator or AskRail have ads?

Neither Fire Behaviour Calculator nor AskRail shows ads.

### Which is updated more often, Fire Behaviour Calculator or AskRail?

Fire Behaviour Calculator ships an update every 9 months, and AskRail every 4 months. Most recently, Fire Behaviour Calculator was updated on October 3, 2026 and AskRail on October 3, 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.*