This research explores the use of online prices from the iFood platform as a proxy for socioeconomic indicators at the neighborhood level and as a data source for daily frequency inflation measures. By collecting pricing data for a açaí sorbet across multiple neighborhoods in Rio de Janeiro, a single-good price index is constructed. The relationship between iFood prices and the Social Progress Index (SPI) is examined, and it is found that there is a positive correlation between the two variables. Once this correlation pattern is established, a theoretical economic framework describing the underlying relationship is proposed. Results suggest that iFood prices can provide valuable information for policy formulation and decision-making at the local level, particularly in cities where traditional indicators are not available or outdated. The research also highlights the importance of considering cultural factors and local tastes when using online prices as a proxy for socioeconomic indicators. On inflation side, the monthly measure fits well official inflation data at national level, suggesting that iFood prices are indeed meaningful for estimating inflation and daily observations seems a valid indicator for within-month inflation dynamics.