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.