Application for calculate the basic humidity of fuel and/or the ignition probability when the user insert the temperature, relative humidity, exposure, slop and other data, but the date and hour is the actual hour of the system. This application supported in english. This application is developed with official data to the Europe or others countries when the temperatures in the months is similar. The application is useful for those engaged in the investigation of fires.THIS IS A TRIAL VERSION WITHOUT MORE FUNCTIONALITY AND USE LIMITED FOR THREE DAYS... The link to full version is available in the app. The full version is adapted to kelvin and fahrenheit scales.