# HumProbCalc (S)

> HumProbCalc (S) (iPhone/iPad app by Ivan Miguel Serrano Pires.)

- Source: https://appshunter.io/ios/app/humprobcalc-s/id654774421 (this page in markdown: same URL + `.md`)
- Developer: [Ivan Miguel Serrano Pires](https://appshunter.io/developer/654748916)
- Category: Weather, Utilities
- Price: $1.99
- Age rating: +4
- Requires: iOS 15.0 · 3 MB
- Languages: American English
- Released: 2013-06-03
- Data updated: 2026-08-20
- User reviews in markdown: https://appshunter.io/ios/app/humprobcalc-s/id654774421/reviews.md

## What is HumProbCalc (S)?

HumProbCalc S helps people who work or live near forests estimate, on the spot and in seconds, two indicators used in wildfire risk assessment: fuel moisture content and ignition probability.

Just enter air temperature, relative humidity, sun exposure, terrain slope and the date/time of the observation. The app applies the reference tables and returns the result instantly.

Key features:
- Fine fuel moisture calculation
- Ignition probability calculation
- Automatic logging of date, time and location for each calculation
- Searchable history, with the option to delete entries
- Available in Portuguese, English, Spanish and French
- Works offline, no internet connection required

This app is a decision-support tool and does not replace official information from your country's civil protection and forestry authorities. In case of fire risk, always follow official guidance.


## Version history (last 5 releases)

### 4.0 — 2026-08-17

New design

### 3.0 — 2022-10-08

New design
Bug fixes

### 2.7 — 2018-10-02

Bugs fixed

### 2.6 — 2017-02-14

Bug fixes

### 2.5 — 2015-01-07

Bug fixes

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## More apps by Ivan Miguel Serrano Pires

- [HumProbCalc (N)](https://appshunter.io/ios/app/humprobcalc-n/id654748913)
- [iAccelerometer Capture](https://appshunter.io/ios/app/iaccelerometer-capture/id860264551)

All apps by Ivan Miguel Serrano Pires: https://appshunter.io/developer/654748916

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*