Combustível Nota 10 is an iPhone app developed by Fundacao Norte Rio Grandense de Pesquisa e Cultura. The program aims to provide the population with security when refueling with rigorously evaluated and approved quality fuel, following internationally recognized technical standards. Participation in the program is voluntary. Participating gas stations will be visited frequently on undisclosed, randomly selected dates to ensure the integrity of collected samples. Each sample undergoes meticulous laboratory analysis, allowing only stations with all approved fuels to be visible in the app. Users can not only locate safe stations but also check the types of fuel and services offered, as well as plan their route to them.