In France, the cost of fuel has reached a new high, with a full 50-liter tank of diesel approaching 120 euros as of September 25, 2026. At that time, diesel was priced at an average of 2.40 euros per liter, compared to 2.17 euros for SP95-E10, a common gasoline blend. While prices have slightly decreased in recent days, they remain high, significantly impacting the budgets of daily commuters. Even small savings, such as a 10-cent difference per liter, can amount to 5 euros for a full tank, but finding cheaper stations without making unnecessary detours is crucial to avoid losing those savings. To help drivers save money, several free smartphone applications have emerged that compare fuel prices in real time. Among the most recommended are Essence&CO, Gasoil Now, SLMC (Station La Moins Chère), Fuel Flash, Waze, and Chargeprice. Essence&CO allows users to compare prices of nearby gas stations on a map, based on the type of fuel needed, including diesel, gasoline, and LPG. It also shows stations that offer AdBlue, a fluid used in some diesel vehicles to reduce emissions. However, the data’s freshness depends on the stations’ updates, and users should check the date of the latest report before heading out. A premium subscription is needed on iOS for route-based searches, which also removes ads. Gasoil Now is another popular app that lets users find the nearest or cheapest stations based on the fuel they need, including diesel, gasoline, and E85. It uses official open data and user reports to provide accurate information, even about fuel shortages. The app is free to download, but in-app purchases are available. SLMC, available only on Android, lists stations sorted by price, showing the actual driving distance rather than straight-line distance. It covers several European countries and includes the date of the last price update. Fuel Flash, which is available on both Android and iOS, offers extensive coverage across Europe, allowing users to compare prices across regions and track historical trends. Waze, best known for its navigation features, also displays fuel prices, allowing users to find the most economical station on their route. Chargeprice is specifically designed for electric vehicle owners, helping them compare charging station prices, including subscription plans and additional fees. It also estimates the time needed for charging, making it easier to plan trips. For users in France, Essence&CO is often the go-to app due to its personalized alerts and collaborative database. Gasoil Now is ideal for those who want a fast and simple price comparator. The French government also offers an official website, prix-carburants.gouv.fr, where users can check fuel prices without downloading any app. Another option is mon-essence.fr, which provides access to the same data as Essence&CO, allowing users to search by city or postal code. However, the accuracy of these platforms depends on the latest information provided by the gas stations themselves.