# USFS Risk Calculator vs Fuels Data

The clearest difference is update cadence: Fuels Data at every 5 weeks against USFS Risk Calculator's every 32 months. USFS Risk Calculator's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

USFS Risk Calculator ships an update every 32 months, Fuels Data every 5 weeks. The most recent releases landed on September 10, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | USFS Risk Calculator | Fuels Data |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (5 ratings)](https://appshunter.io/ios/app/fuels-data/id6446859468/reviews)** |
| Number of ratings | — | **5** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 5 weeks** |
| Monetization | — | Free |
| Size | 42 MB | 25 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [US Forest Service](https://appshunter.io/developer/949583790) | [Allen Institute for AI](https://appshunter.io/developer/1614005289) |

## What reviewers say

### USFS Risk Calculator

[App page](https://appshunter.io/ios/app/usfs-risk-calculator/id1496807580)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fuels Data

[App page](https://appshunter.io/ios/app/fuels-data/id6446859468)

Streamline field data collection for wildland management. This app automatically performs calculations and links photos to data, reducing transcription errors. Collected data can be used to train fuel load estimation models.

**Highlights:** Automated calculations, Photo and data linking, Reduced transcription errors, Data upload for AI models, Field data collection

**In-app purchases:** none


## Frequently asked questions

### Is USFS Risk Calculator free?

USFS Risk Calculator is free to download, with no in-app purchases.

### Is Fuels Data free?

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

### Do USFS Risk Calculator or Fuels Data have ads?

Neither USFS Risk Calculator nor Fuels Data shows ads.

### Which is updated more often, USFS Risk Calculator or Fuels Data?

USFS Risk Calculator ships an update every 32 months, and Fuels Data every 5 weeks. Most recently, USFS Risk Calculator was updated on September 10, 2026 and Fuels Data on September 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*