ToolHub is an application that integrates multiple practical tools, designed to provide users with convenient one-stop service. It typically includes but is not limited to the following features: 1. Gradienter: Accurate to 0.1 degrees, can take and save pictures. 2. Ruler: Used for measuring length. 3. Speed Chart: Records and displays speed changes. 4. Accelerometer: Measures and displays acceleration. 5. Compass: Provides direction guidance. 6. Barometer: Measures and displays atmospheric pressure. 7. Decibelmeter: Measures and displays environmental noise levels. 8. Color Extraction: Extracts colors from photos or the camera. 9. Laser Ranging: Obtains depth images and measures the distance from the phone to the object in front. 10. Gyroscope: Measures and displays rotation angles and directions. These tools are integrated into one application, allowing users to enjoy multiple functionalities without downloading separate apps, greatly enhancing convenience and efficiency.