Fire Behaviour Calculator vs IRPG App (2025)

This user-friendly app incorporates the fuel and fire behaviour models developed by Scion's Rural Fire Research group, and supported by the NZ fire service commission.

The IRPG App, sponsored by Twisted Kelp, is a fully digital offline-capable 2025 edition IRPG with advanced features like full-text search and bookmarking to improve safety and efficacy on the fireline. A must-have for any wildland firefighter that carries a physical copy in their back pocket or web gear. Features: - Search. For the first time ever, the IRPG is fully searchable. Not just titles, but the full text of each and every page in the guide is indexed to find what you are looking for faster than ever. - Bookmarks. With one tap, you can bookmark any chapter in the IRPG for quick reference in the Bookmarks tab. No more dog ears, no more hunting to find typing charts or weather tables. - Notes. Take notes inside the IRPG, without needing to carry a pen. Notes are saved with the app so you can come back to them whenever you need. - Checklists. Selectable checklists for common and crucial radio traffic, such as sizeup reports and medical incident reports (8-lines). Check the button next to each topic you hit as you radio in. Remember, it's push to talk, not push to think. - Weather. Use your phone's GPS to send precise lat/long along with your belt weather kit measurements via SMS or iMessage to your STL, DIV, lookout, etc. - Speed. This app is optimized for speed so you can quickly access the info you need faster than whipping out your physical copy. We want this app to be the absolute best it can be. Please don't hesitate to reach out using the Suggestions / Feedback button in the Tools tab. We'd love to hear your thoughts as we work to improve the app and develop new features to keep you safe and maximize the impact you have. Thank you for your service protecting our communities.