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Screenshots

  • FDR Calculator screenshot 1
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About FDR Calculator

🔥 Professional Fire Risk Assessment Made Simple
Calculate Fire Danger Ratings instantly with precision and confidence. Designed for fire management professionals, land managers, and safety authorities who need accurate fire risk assessments in the field.

📊 Real-Time FDR Calculation
- Instant Fire Danger Index calculations based on weather conditions
- Professional-grade algorithms for accurate risk assessment
- Visual color-coded danger levels (Blue, Green, Yellow, Orange, Red)

🎯 Interactive Gauge Display
- Beautiful visual gauge showing current fire danger level
- Intuitive interface with easy-to-read results
- Tap gauge for detailed action recommendations

📋 Comprehensive Action Guidance
- Detailed recommendations for each danger level
- Fire behavior predictions and suppression strategies
- Prevention guidelines and aircraft management protocols
- Disaster management procedures for high-risk conditions

🌡️ Weather Input Controls
- Temperature, humidity, and wind speed sliders
- Days since rain and rainfall amount tracking
- Precise manual input options for exact values
- Real-time calculation updates as you adjust parameters

🎯 Perfect For
- Fire management authorities
- Emergency services personnel
- Land and forest managers
- Agricultural professionals
- Safety and risk assessment teams
- Anyone responsible for fire prevention planning

🛡️ Privacy-First Design
- All calculations performed locally on your device
- No personal data collection or transmission
- Works completely offline - no internet required

What’s new

Version 3.2.0 · Updated June 7, 2026

• More accurate Fire Danger Ratings, especially during dry spells • New: a Today summary with the day's high/low and peak fire danger • New weather source option: OpenWeatherMap • Faster, more accurate location search with cleaner place names • Refreshed Settings and smoother, more reliable startup • New option to clear cached data • Performance, security, and stability improvements

User reviews

Christopher Kvalsvig
Christopher Kvalsvig
Very useful for a firefighter, thank you
Ashley Theron
Ashley Theron
This app will become a very handy tool to calculate the daily FDI. It seems the app is still being tweaked for a more accurate reading and better user experience. Few suggestions...amount for days since last rainfall needs to go beyond 30 days (seems default is 30 days and goes back to 30 if you enter a higher amoun...

Alternatives to FDR Calculator

Looking for apps like FDR Calculator? Here are 2 similar Android apps on Google Play. All of them are free to download.

FDR Calculator vs. alternatives
App Rating Price Installs Last updated Compare
FDR Calculator – Free 1,000+ Jun 7, 2026
Aviatter – Free 1,000+ Jan 13, 2022 Compare
EWS Mobile – Free 500+ Sep 23, 2024 Compare

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