Gauges: Speedometer & Sensors

Gauges is an all-in-one sensor toolkit featuring GPS, speedometer, altitude, barometer, accelerometer, magnetometer, sound level, and luminance. It provides real-time graphs for every sensor and, when location and heading are enabled, a map view. You can annotate values by sliding the instrument, and minimum/maximum values are tracked with a quick reset. Unit definitions are accessible via in-app Wiki links.

Data can be shared with other apps or exported in CSV format (feature may require in-app purchases). Advanced options include viewing all sensors at once, spoken values, and configurable update frequencies. Typical use cases cover weather checks with the barometer, speed tracking, altitude measurement, G-forces assessment, and magnetometer-based detection of hidden cameras or electrical sources.