A device for providing guidance or feedback to a user. The device includes a camera configured to detect image data indicating a user performance of an activity. The system includes a guidance unit connected to the camera. The guidance unit is configured to identify the activity based on image processing of the image data or an identification of the activity from the user. The guidance unit is also configured to determine a criteria associated with the activity. The guidance unit is also configured to determine a user performance of the activity based on the image data. The guidance unit is also configured to determine feedback based on a comparison of the criteria and the user performance of the activity, the feedback indicating an improvement or suggestion for the user. The system also includes an output unit connected to the guidance unit, the output unit configured to output the feedback.