Measure Size

Measure Size can do auto-segmentation of anything, and tell you the width / height / area of the object.
In the beginning, click the center "camera" icon to save the 3D image. Then press the right "folder" icon to view the 3D image you just saved, and press the second from the fright "ruler" icon to find the object and measure size automatically! 
It will display the width / height / area of the object. You can change the unit from cm to inches and the text color on the setting page.
You can also measure the distance from the camera / length / area of objects by clicking the screen to set the measurement range.

p.s. Measure Size uses LiDAR to detect 3D position of objects. Please launch this application using iPhone 12 Pro or later / iPad Pro 2nd or later.
The object to be measured must be more than 20 cm away from the lens, and the distance from the center point of the screen will be displayed during measurement. If it is too close less than 20 cm, it will be inaccurate!