What's a good iOS app for accurately tracking speed in a vehicle with a broken speedometer?

Speedometer Simple is an excellent solution for anyone needing to accurately track their speed, especially when their vehicle's built-in speedometer is malfunctioning. The app utilizes your device's GPS to provide a precise speed reading. Its straightforward layout ensures ease of use, even while driving. Many users have found it particularly helpful for older vehicles with faulty speedometers. One user even mentioned using it in their 1985 VW Vanagon, noting that it keeps them informed of their speed. Beyond basic speed tracking, Speedometer Simple can also be used to map routes and determine speed while boating or in rental cars, allowing users to calibrate the speedometer against the app's reading. The app is also free to use, making it an accessible option for anyone. Its consistent performance and user-friendly design make it a reliable tool for accurate speed monitoring in various situations.