Speedometer Speed Limit Alert is a comprehensive iPhone application designed to provide a wide array of features for tracking speed, acceleration, and other essential metrics during various activities. The app offers step-by-step audio notifications for reaching specified speeds, speed data filtering for different activities like cycling and walking, and a G-meter for approximate acceleration calculations without needing a fixed device position. With large, well-lit digits and a HUD for night-time viewing, the app ensures easy readability. Additionally, users can benefit from features like speed and acceleration graphs, odometer, altimeter, and detailed journey statistics.

The app also allows users to export journey data to KMZ, GPX, or CSV files, view tracks on maps, save tracks, and utilize waypoints with descriptions, photos, and audio records. With audio alert settings customizable to different speed ranges and the ability to import custom WAV files for alerts, Speedometer Speed Limit Alert offers a versatile solution for tracking speed and related metrics efficiently.